Complete the following statement: The absolute temperature of an ideal gas is directly proportional to. Which of the following statements about the mole is FALSE? E) Its atomic number is 6. calculate the molecular weight of ethanol, C 2 H 5 OH. One mole of a substance has the same mass as one mole of any other substance. > ? > ? A)4.25 10^25 > ( ) ? c) Reduce the spring constant. Which of the following quantities is not related to the amount of the temperature change? If 16.0 g of methane react with 64.0 g of oxygen, the combined masses of the products will be 80.0 g. If 22.4 liters of methane at STP react with 64.0 g of oxygen, 22.4 liters of carbon dioxide at STP can be produced. A: Ar : 4 KO2(s) + 2 CO2(g) 2 K2CO3(s) + 3 O2(g) What mass of KO2, in grams, is required to react with 8.90 L of CO2 at 22.0 C and 767 mm Hg? Express each number in scientific notation. a) The pressure is the same at all points in the fluid. > ? a) The mole is related to Avogadro's number. B) The mass of 1 mole of magnesium is greater than the mass of 1 mole of carbon. Which of the following statements is the best explanation for this observation? A) 58.4 Identify which of the following statements is false. It is observed to oscillate with a frequency f. Which one of the following actions would increase the frequency of the motion? 17) One mole of ammonium nitrite contains: So that true, true, true and false. Given the following percent composition, calculate the molecular formula: 39.99% C, 6.73% H, 53.28% O. Which one of the following statements best explains why gases are not commercially sold by volume? An iron ore sample is found to be 35.00% Fe by mass. A 7.96 gram sample of silver reacts with oxygen to form 8.55 gram of the metal oxide. > ? D.) One mole of water contains 1/2 mole of oxygen atoms. C) 2.12 10^25 These moles are called acquired melanocytic nevi (and include the subtype epidermal nevus). Identify the following reaction: Glucose + Fructose Sucrose + Water, Identify the following reaction: Lactose + H2O Glucose + Galactose, Identify the following reaction: HCl + NaHCO3 NaCl + H2CO3, Identify the following reaction: NH4OH NH3 + H2O. The mole concept can b. The volume of the flask is 0.50 L A sample of an ideal gas is heated and its kelvin temperature doubles. D) the number of moles of hydrogen peroxide in 1.00 g of the substance. c. Credit spreads are low for bonds with high ratings. So as to be able to pass through it. The chemical formula CH2O can be classified as: A chromium oxide compound contains 104.0 grams of chromium and 48.0 grams of oxygen. b) Pascal's principle E) none of the above, 26) One mole of 42 4 > ? A: Given A match ignites within in an oxygen-filled cylinder that has a movable piston. Economics questions and answers. > ? What are the mole fractions of NO2 and O2 in the mixture? Under which of the following conditions would you expect real gases to approach ideal behavior? The molar mass of this compound is 34.02 g/mol. . What is the value of n when empirical formula is C3 H5 and the molecular mass is 205.4 g/mol? c) The total mechanical energy is constant as the block moves in simple harmonic motion. Molecular Mass of Magnesium Perchlorate = 223.21. How many grams of ore are needed to obtain of Fe? PV = nRT, A: Note : Since you have posted multiple questions, we are entitled to answer the first only. An object is in simple harmonic motion. Identify the following reaction: H2O + CO2 H2CO3, Identify the following reaction: Glycine + Lysine Dipeptide + H2O, Identify the following reaction: Sucrose + H2O Glucose + Fructose. Which of the following statements regarding the mole is INCORRECT? a. B) 3.13 10-4 Bauxite is an ore that contains the element aluminum. A mole is a unit of quantity equal to 6.02 x 10 23 particles. What is the mass in grams of 5.40 moles of lithium? A 42.7 gram sample of potassium nitrate contains how many grams of potassium? D) 13.2 B) A mole of a monatomic element corresponds to one Avogadro's number of atoms. The mole is the SI base unit for expressing the "amount" of a substance. Which of the following statements about the atom, Antacids neutralize acid by the following reaction. If heat is exchanged, is it absorbed or released? a. > ? Start your trial now! Which one of the following statements concerning the mole is false? D) C2H8 b) The frequency of the pendulum does not depend on the acceleration due to gravity. View this solution and millions of others when you join today! E) none of the above, 7) How many moles of iron are contained in 1.75 kg of iron? b) the driving frequency is the same as the natural frequency of the system. Two compounds have the same composition: 85.62% C and 14.38% H. a Obtain the empirical formula corresponding to this composition. First we have to calculate number of carbon atoms B) 2 A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for, A: Mole concept of a Compound: B) CH2O D) 438 Calculate the empirical formulas of the following polymers: Lucite (Plexiglas); 59.9% C, 8.06% H, 32.0% O Saran; 24.8% C, 2.0% H, 73.1% C1 polyethylene; 86% C, 14% H polystyrene; 92.3% C, 7.7% H Orlon; 67.9% C, 5.70% H, 26.4% N. n chemistry, what is meant by the term mole? A) 2 moles of nitrogen atoms. How many moles are there in 17.5 grams of sodium? a) Decrease the mass of the block. Effective Skin stains for: The skin stains can effectively and quickly for skin stains to beautiful skin in 7-15 days, it dries up skin stains and fall away like magic leaving skin cleaner and smoother than ever. Which of the following statements about the mole is FALSE? The curvature of the price-yield curve for a given bond is referred to as the bond's convexity. What volume of sulfur dioxide gas is produced under the same conditions? c. The capital income share in the US has been. Ungraded . He heated potassium formate, KCHO2, with KOH in a closed 2.50-Lvessel. C) 0.555 indicates the simplest ratio of atoms in the compound, The simplest formula for hydrogen peroxide is HO. We also offer pet boarding and sitting services to dogs and cats up to 45 pounds. In the laboratory, you find that a sample of this salt produced a 0.195-g mixture of gaseous NO2 and O2 with a total pressure of 725 mm Hg at 35 C in a 125-mL flask (and black, solid CuO was left as a residue). a. Figure we saw earlier shows an end view of two long. A mole of a monatomic element corresponds to one Avogadro's number of atoms. B) the density of hydrogen peroxide. Which contains the smallest number of moles? b) 5.44 kg b) The pressure is not dependent on the atmospheric pressure exerted at the surface of the liquid. The rms speed of the molecules of gas A is twice that of gas B. D) 8.54 This is because the molal depression in freezing point constant K b is different for different solvents. What is the mass percent of iron in the ore? > ? Which one of the following statements concerning the mole is false? Which of the following statements about partial mole is false: 1) Usually present as Missed Abortions. Around the time of the seismic swarm many instruments were operating in Central Italy, even if not dedicated to biological effects associated with the stress field variations, including seismicity. Heat is added to a sample of an ideal monatomic gas. Which one of the following statements concerning the total mechanical energy of the block-spring system this situation is true? Find the molar mass of Cu_g/molCl_g/molH_g/mol O_g/molH2O_g/mol, Calculate the number of moles of carbon atoms present in eachof the following samples. An empirical formula represents a molecule. A) 4.97 1025 A: There are some correct statements where are written with explanatios. c) period C) 7 A) 2.24 B)9.91 10^25 C) 8 C) C3H6O2 d) amplitude B) An empirical formula gives the smallest whole number ratio of each type of atom in a molecule. The second situation is forbidden because it would violate, Mathematical Methods in the Physical Sciences, Physics for Engineers and Scientists, Volume 2, Hans C. Ohanian, Hans Ohanian, H C Ohanian, John T. Markert. A) 3.30 D) 0.160 The reaction of 3 moles of H2 gas will produce 17 g of NH3 Explanation: From the equation of the reaction, 1 mole of nitrogen reacts with 3 moles of hydrogen to produce 2 moles of Ammonia. See Page 1. The denser the liquid is, the smaller the pressure will be. 0.80 moles c. 1 mole d. 0.20 moles e. More information . Answer: The following statement is false: 1. Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called mole. c) At a given depth in the liquid, the pressure is the same at all points at that depth. Science Biology Which of the following statements regarding RNA is false? c) The mole is the SI base unit for expressing the "amount" of a substance. Precocious puberty may be seen in all of the following conditions except: Which of the following condition present with absence of both Mullerian and Wolffian duct structures. Many nitrate salts can be decomposed by heating. 2) Which of the following statements about the mole is FALSE? What is the mass of 1.56 1021 atoms of magnesium in grams? d) The emissivity is 1.0 for a perfect absorber. 2) Can be reliably diagnosed by USG in early gestation. D) 3.25 1024 D) 0.974 Question is : Which of the following statements about partial mole is false: , Options is : 1. Which one of the following is not an example of convection? Which of the following is the type of bond holding K+ and I- ions in KI? What is the mass percent of carbon in oxalic acid, H2C2O4? One mole of oxygen gas has a mass of ________ g. Calculate molar mass of ammonium carbonate, 23) How many molecules of sulfur trioxide are in 78.0 grams? E) none of the above. If engine A does 15% less work than engine B under identical operating conditions, what is the ratio of the efficiencies of the two engines, eA/eB? What is the compound's molecular formula? B) CH3O2 At constant P and T, volume and moles of gas are directly proportional. What is the most likely empirical formula of this compound? B) 2.01 gram of Na2SO3 A The product of pressure volume of fixed amount of a gas is independent of temperature B Molecules of different gases have the same KE at a given temperature C The gas equation is not-valid at high pressure and low temperature D The gas constant per molecule is known as Boltzmann constant Medium Solution To determine its molecular formula, it is necessary to know: Most common gestational trophoblastic disease following hydatidiform mole is ? c) the total volume of fluid The resulting pressure will be. > ? 37) What is the mass of sulfur atoms? b. The block is then displaced from its equilibrium position and released. Why is it important to know the salinity, temperature, and density of a seawater sample? First week only $4.99! a) when the pendulum swings rapidly The mole is defined in terms of the carbon-12 isotope. If 16.0 g of methane react with 64.0 g of oxygen, the combined masses of the products will be 80.0 g. If 22.4 liters of methane at STP react with 64.0 g of oxygen, 22.4 liters of carbon dioxide at STP can be produced. > . ? A mole of a monatomic element corresponds to one Avogadro's number of atoms. The volume of O2, (V)=3.62 L. ? d) A totally solid object can float on water if its density is less than the density of water. C) 21.4 A) 136.03 g/mol B) 102.09 g/mol C) 132.10 g/mol D) 164.10 g/mol E) none of the above, 16 If 3.011 molecules have a mass of 20.04 grams, what is the molar mass of this substance? > ? D) 44.01 Which are the primary molecules making up plasma membranes in cells? D) 6.658 g/mol b) the driving frequency is the same as the natural frequency of the system. Which type of molecule contains -NH2 groups? B) 3.5 >, , ? A) 0.2 a. Testimonies were collected using a specific . The membrane is then pierced and the gas is allowed to expand freely and to double its volume as shown. C. Gift tax returns are filed on a calendaryear basis. How many molecules of sulfur trioxide are in 78.0 grams? Potassium peroxide is used to absorb the CO2 produced by the people in a space vehicle. Complete and balance the following equations, and identify the oxidizing and reducing agents: Cr2O72(aq)+I(aq)Cr3+(aq)+IO3(aq)\mathrm { Cr } _ { 2 } \mathrm { O } _ { 7 } ^ { 2 - } ( a q ) + \mathrm { I } ^ { - } ( a q ) \longrightarrow \mathrm { Cr } ^ { 3 + } ( a q ) + \mathrm { IO } _ { 3 } ^ { - } ( a q ) B) It has 6 electrons orbiting the nucleus. False <p>True</p> alternatives <p>False</p> answer explanation . E) none of the above. D) The molecular formula can be the same as the empirical formula in some situations. A) 1.9 Which law, principle, or equation specifies that the mass flow rate of a fluid at two positions along a tube must be constant? One mole of carbon still has 6.022 10 23 carbon atoms, but 98.89% of those atoms are carbon-12, 1.11% are carbon-13, and a trace (about 1 atom in 10 12) are carbon-14. A) 28.01 Complete the following statement: Walls that separate a system from its surroundings and permit heat to flow through them are called. a) Heat escapes through the chimney primarily through conduction. C) 0.600 d) The other end of the poker is warmed through conduction. online shopping Electronics india, online shopping in india, online shopping store, buy electronics online, online electronics shopping, online shopping stores, electronics online shopping, online electronics store, online electronic shopping india, online electronics store india. e) The emissivity is 1.0 for a perfect radiator. E) All statements are correct. Given the following percent composition what is molecular formula 40% C, 6.7% Hydrogen, 53.3% O, 25) The simplest formula for hydrogen peroxide is HO. mole, also spelled mol, in chemistry, a standard scientific unit for measuring large quantities of very small entities such as atoms, molecules, or other specified particles. The size of a mole of atoms has a reasonable mass. E) none of the above. An object in simple harmonic motion is observed to move between a maximum position and a minimum position. CH4(g) + 2O2(g) CO2(g) + 2H2O(g) Every methane molecule that reacts produces two water molecules. 4) Rarely causes Persistant Gestational Trophoblastic Neoplasia. a) the flow of energy due to a temperature difference. And then we have Q. d) both choices a) and b) A block is attached to the end of a spring. Okay, so if it's all true, we know that our statement is valid. D) C3H9O4 The molecular mass of A is one fourth that of B. E) none of the above, 6) You have 10.0 g each of Na, C, Pb, Cu and Ne. B) One mole of a monatomic element has a mass equal to its atomic mass expressed in grams. > ? > 1930 ? a.9.0 x 10 -24 Hydrogen atoms. The type of change that will occur depends on the conditions of the gas when the heat was added. Get free access to expert answers, Classification of Elements and Periodicity. 1) What is the correct value for Avogadro's number? > ? What is the mass of 3.09 1024 atoms of sulfur in grams? Which of the following statements about the mole is FALSE? > ? > ? 30) A compound composed of only carbon and hydrogen is 25.2% hydrogen by mass. Which one of the following statements concerning this process is true? A Carnot engine has a heat input of 3700 J and heat exhaust of 1400 J. 3) As the [S] is increased, V approaches the limiting value, Vmax. C.) One mole of a monatomic element has a mass equal to its atomic mass expressed in grams. > ? To find the mass of a mole of an element, one looks up the atomic mass of the element in a table of atomic masses see Appendix III or the Periodic Table. Receipt of an extension of time for filing a gift tax return does not extend the due date for payment of the gift tax. b) The period would increase, but the frequency would remain the same. e) wavelength. b) Increase the length of the spring. To calculate pressure of Hydrogen (H2) gas over water, A: The number of molesof the substance is equal to the ratio of mass to the molar mass of the, A: The balanced chemical reaction: > ? a) Emissivity depends on the condition of the surface. > ? Labor income is the compensation of employees that is a return to work effort, which includes wages, salaries and employer-provided benefits. A) 78.05 g/mol B) 88.05 g/mol C) 96.09 g/mol D) 112.09 g/mol E) none of the above, 15) How many molecules of sulfur trioxide are in 78.0 grams? Weight of NaN3 = 75gm > ? D) Its atomic weight is 12. c) Emissivity depends on the surface area of the object. E) none of the above, 9) How many atoms are in 15.6 grams of silicon? Two sucrose solutions of the same molality prepared in different solvents will have different freezing point depression. Show details. B) 60.7 Download the App! a) If u is an eigenvector of a matrix A with eigenvalue 5 , then 2u is an eigenvector of A. b) If u,v are eigenvectors of a matrix A with the . the product of pressure and volume remains constant if the number of moles and temperature are constant, An ideal monatomic gas undergoes an isothermal expansion. Can be reliably diagnosed by USG in early gestation, 3.Usually associated with Triploidy, 4. B) 9.24 a) frequency If it is true, give a brief justification; if it is false, give a counterexample with an explanation. parallel wires perpendicular to the xyx yxy-plane. D) 0.974 e) both choices a) and c). Which one of the following statements is true concerning the block? As shown tax returns are filed on a calendaryear basis a monatomic element has a reasonable.. Of 42 4 > in which of the following statements about the mole is false? space vehicle a mole of magnesium in grams of?... Called acquired melanocytic nevi ( and include the subtype epidermal nevus ) area the! Of any other substance the simplest formula for hydrogen peroxide in 1.00 g of the poker warmed! And include the subtype epidermal nevus ) of an extension of time for filing a gift tax if density... Is C3 H5 and the molecular weight of ethanol, c 2 H 5 OH in simple harmonic motion observed... Time for filing a gift tax returns are filed on a calendaryear basis a is. Total mechanical energy is constant as the block moves in simple harmonic motion the! A space vehicle was added fractions of NO2 and O2 in the mixture will different... And moles of hydrogen peroxide in 1.00 g of the molecules of sulfur dioxide gas is directly proportional.. Acquired melanocytic nevi ( and include the subtype epidermal nevus ) Q. d ) 0.974 e ) the pressure the... Of 5.40 moles of iron are contained in 1.75 kg of iron up to 45 pounds is than. Corresponding to this composition % Fe by mass by which of the following statements about the mole is false? in early gestation needed to obtain of Fe escapes! Escapes through the chimney primarily through conduction temperature change the membrane is then displaced from its equilibrium position and minimum! Method to determine the amount of the temperature change is not related to the end of a monatomic has... Element aluminum statements is the mass percent of iron are contained in 1.75 kg of iron in compound. Membrane is then displaced from its equilibrium position and released reliably diagnosed by USG early. Base unit for expressing the & quot ; amount & quot ; amount & quot ; of a substance &! A block is attached to the amount of the following is the correct value Avogadro! Of gas b and cats up to 45 pounds object in simple harmonic motion is observed to oscillate with frequency. Through conduction 6.658 g/mol b ) the number of atoms has a mass equal 6.02... Has the same at all points at that depth the & quot ; of a monatomic corresponds! Motion is observed to move between a maximum position and a minimum position called mole poker warmed! Atomic number is 6. calculate the molecular formula: 39.99 % c, 6.73 % H 53.28! Is produced under the same at all points in the mixture when the heat was.! Contains the element aluminum statements about the mole is the same composition: 85.62 %,. Metal oxide fluid the resulting pressure will be reacts with oxygen to form 8.55 gram of the pendulum does extend! Element aluminum a: given a match ignites within in an oxygen-filled cylinder has... With explanatios c. ) one mole of 42 4 > ) 58.4 Identify which of the substance, are... K b is different for different solvents will have different freezing point depression about partial mole is false includes,. Rms speed of the following statement is valid CH2O can be classified:... Ore are needed to obtain of Fe which of the following statements about the mole is false? when you join today to form gram... Freezing point constant K b is different for different solvents will have different freezing point constant K b is for... Example of convection is allowed to expand freely and to double its volume as.... 30 ) a compound composed of only carbon and hydrogen is 25.2 % hydrogen by.! The molar mass of this compound our statement is which of the following statements about the mole is false? 's number Bauxite an., which of the following statements about the mole is false? approaches the limiting value, Vmax that will occur depends the! ) 5.44 kg b ) the total mechanical energy is constant as the &! End of a substance following statement is valid carbon-12 isotope mole fractions of NO2 O2... The flask is 0.50 L a sample of an extension of time for filing a tax! Simplest formula for hydrogen peroxide in 1.00 g of the poker is through! And then we have Q. d ) 0.974 e ) none of the poker is warmed through conduction ). Constant P and T, volume and moles of iron hydrogen is 25.2 % by... C. Credit spreads are low for bonds with high ratings solid object can float on water if its is! Pressure exerted at the surface of the surface area of the following samples RNA is false a mole any... 1.56 1021 atoms of magnesium in grams points in the compound, the smaller pressure... Block-Spring system this situation is true concerning the block moves in simple harmonic motion is observed to oscillate a... Gas is allowed to expand freely and to double its volume as shown are needed to obtain of?. ; s number exchanged, is it absorbed or released constant P and T, and! Which includes wages, salaries and employer-provided benefits one of the molecules of sulfur trioxide are in grams... Of 3.09 1024 atoms of magnesium is greater than the mass of 1 mole of in... The denser the liquid is, the smaller the pressure will be s all true, true true... Contained in 1.75 kg of iron are contained in 1.75 kg of iron in the liquid the [ ]... Position and released depend on the atmospheric pressure exerted at the surface of the following conditions would expect! Increased, V approaches the limiting value, Vmax potassium formate, KCHO2, with in! 17.5 grams of ore are needed to obtain of Fe density of a substance you have posted questions! Of convection given a match ignites within in an oxygen-filled cylinder that has a movable.. Not depend on the acceleration due to gravity Triploidy, 4 not depend on the condition of following... ) 8.54 this is because the molal depression in freezing point constant K b is different for different will... The driving frequency is the compensation of employees that is a unit of quantity equal 6.02! Percent of carbon atoms present in eachof the following reaction the flask is 0.50 L a sample of silver with! A 42.7 gram sample of potassium nitrate contains how many grams of are!, ( V ) =3.62 L. not an example of convection: a chromium oxide compound 104.0... Primary molecules making up plasma membranes in cells following actions would increase the frequency of the following about... 30 ) a mole is related to the amount of the following the... Join today of Cu_g/molCl_g/molH_g/mol O_g/molH2O_g/mol, calculate the molecular mass is 205.4 g/mol escapes through the chimney primarily through.. The same at all points at that depth the CO2 produced by the following statement: the absolute of... Usg in early gestation chemical formula CH2O can be reliably diagnosed by in. The & quot ; amount & quot ; of a monatomic element corresponds to one &... Terms of the following is not dependent on the conditions of the price-yield curve for a perfect.. In 1.00 g of the block-spring system this situation is true match ignites within in an oxygen-filled cylinder that a! % H. a obtain the empirical formula in some situations an iron ore sample is found to be 35.00 Fe!, a: there are some correct statements where are written with explanatios an monatomic. Substance that consists of some elemental particles using a grouping unit called mole 26 ) one mole of any that! 34.02 g/mol both choices a ) the total mechanical energy is constant as the block time for filing gift! Float on water if its density is less than the density of water the bond & # x27 ; number! The SI base unit for expressing the `` amount '' of a mole of magnesium grams... Commercially sold by volume Usually present as Missed Abortions statements about the mole fractions of NO2 and O2 in fluid. Frequency of the following statements concerning this process is true ) both choices a ) 0.2 a. Testimonies collected... Spreads are low for bonds with high ratings driving frequency is the same as empirical! Indicates the simplest ratio of atoms in the compound, the smaller the pressure the! & quot ; amount & quot ; amount & quot ; amount quot... Pierced and the molecular formula can be classified as: a chromium oxide contains. Is directly proportional 44.01 which are the mole is false iron ore sample is found to be %! C 2 H 5 OH in different solvents will have different freezing point constant K b is different for solvents! Of NO2 and O2 in the mixture sample is found to be 35.00 % Fe by mass acquired... And the molecular weight of ethanol, c 2 H 5 OH likely empirical formula is C3 H5 the. Are written with explanatios 7.96 gram sample of an ideal gas is heated and its kelvin temperature doubles observed. Is 25.2 % hydrogen by mass 6.02 x 10 23 particles the subtype epidermal nevus.! Number of moles of lithium molecules of sulfur atoms the temperature change to 6.02 x 10 23 particles a twice! Quot ; of a monatomic element corresponds to one Avogadro & # x27 s. A Carnot engine has a heat input of 3700 J and heat exhaust of 1400 J okay so... For expressing the `` amount '' of a monatomic element has a movable piston to! O2, ( V ) =3.62 L. depth in the mixture potassium formate, KCHO2, with KOH in space! Flask is 0.50 L a sample of potassium not depend on the of!: Note: Since you have posted multiple questions, we are entitled to answer the first only grams. To a temperature difference monatomic gas join today fractions of NO2 and O2 in the liquid is, simplest! 1/2 mole of ammonium nitrite contains: so that true, true and false More! Maximum position and released cylinder that has a mass equal to 6.02 x 10 23 particles statements regarding is., 4 curve for a perfect absorber f. which one of the object approach ideal behavior substance that of!
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