4. One mole is equivalent to a. 3.75 g Hydrogen c. 16 g Oxygen b. 14 g Carbon d. 190 g Gold 5. What does the mole measure? a. mass of a substance b. amount of a substance C. volume of a gas d. density of a gas

Q: Which of the following has the most moles of substance? a. 10.0 g He b. 5.0 x 10²³ atoms Ne c.…

A:

Q: 7.0 g of nitrogen atoms contains     a.1 molar mass of nitrogen atoms b.2 molar mass of nitrogen…

A: As we know that, 1 mol of nitrogen atom contains 14 g of nitrogen. (Molar mass of N = 14 g/mol )…

Q: How many moles of oxygen atoms are in 8.18 grams of Mg(NO3)2?    a. 0.662 moles of oxygen    b.…

A: The moles of an element is calculated as the amount of the element present per mole of the compound…

Q: Review the following chemical reaction and data table provided. HCI (aq) + NaOH (aq) --> NaCI (s) +…

A: Hydrochloric acid reacts with sodium hydroxide to form sodium hydroxide and water. The equation for…

Q: How many moles of oxygen are in 6.75 grams of oxygen?     A. 0.42 moles B. 1.60 moles C. 0.21 moles…

A: Given  values are, Mass of oxygen = 6.75 g We know molar mass of oxygen O2 = 31.998g/mol

Q: 0.4 moles of calcium carbonate contains how many carbon atoms?     A. 1.2 x 1023   B. 4.8 x…

A: The formula of calcium carbonate = CaCO3  Molecular weight of CaCO3 is 100 gm/mol  1 mole CaCO3 =…

Q: One mole of oxygen gas has a mass of 6.022 x 1023 16.0 32.0 none of the above 8.

A: One mole of oxygen gas is equal to = O2 (two atoms of oxygen ) One oxygen atom = 16 g

Q: The molar mass for F e (C O 3 ) is: A. 251.4 grams/mole B.115.8 grams/mole C.139.8 grams/mole D.83.8…

A: We have given that  The molar mass for Fe(CO3) is: A. 251.4 grams/mole B.115.8 grams/mole C.139.8…

Q: 0.6 moles of strontium phosphate contains how many oxygen atoms?     A. 0.8 NA   B. 2 NA   C.…

A: Answer: Molecular formula of Strontium Phosphate: Sr3(PO4)2

Q: A 23.5-L air sample trapped inside a balloon is found to contain 0.153 g of oxygen gas at a…

A:

Q: How many moles of neon are contained in the following volumes at Standard Temperature and Pressure…

A: One mole of ideal gas will occupy volume of 22.4 liters at STP   a)  44.00 L so number of moles of…

Q: 41.  0.8 moles of ferrous phosphate contains how many oxygen atoms?   A. 3.2 x 1024      B.…

A:

Q: One mole of H₂O contains O a.3.0 1023 hydrogen atoms O b. 1.2 1024 hydrogen atoms c. 6.02 1023…

A: The number of molecules or atoms present in the one mole of the substance is equal to the Avogadro…

Q: The moler mass of sulfur tetrafluoride is A. 54.10 g\mol B. 358.60 g/mol C. 108.07 g/mol D.…

A:

Q: 16.05 g of methane reacts completely with 64.00 g of oxygen to form carbon dioxide and water. What…

A:

Q: What is the molar mass of sodium carbonate?

A: chemical formula of sodium carbonate is Na2CO3

Q: Stoichiometry is based on the law ofA. constant mole ratios.B. Avogadro’s constant.C. conservation…

A: Correct answer is (A) constant mole ratios. Stoichiometry is based on constant mole ratios in which…

Q: A silver wire has a diameter of 0.500 mm. What length of this wire contains exactly 1.00 mol of…

A: Given,  Diameter of Ag = 0.500 mm Moles of Ag = 1.00 mole Density of Ag = 10.5 g/cm3  Length of this…

Q: You have a beaker containing 325.9mL of H2O and 14.55g of CaBr2. Calculate the mass percent.

A: Mass percentage ( % w/W ) :  mass of solute in grams present in 100 mL of solution is called mass…

Q: 4. A. HBr, ROOR D. HBr G. HC=CNa 5. A. HBr, ROOR D. HBr G. NaOH 6. A. t-BuOK D. H₂SO4, H₂O, HgSO4…

A: Given are organic reactions.

Q: You weigh 3.6g of sodium carbonate on the balance in lab. a. What is the mass, in amu, of one…

A:

Q: An spaceship of 1000 Kg of mass is moving from earth towards moon.The value of which physical…

A: Spaceship is moving from earth to moon. Hence the effect of gravity on body changes from earth to…

Q: 1. A. What is the mass in grams of atoms of strontium? grams B. How many strontium atoms are there…

A: We have to apply mole concept

Q: Three identical 1-L flasks filled with H​2,​ O​2,​ and Ne gas, respectively, at STP are placed in…

A: As the all gases are at same temperature, pressure and in 1 L container. Using ideal gas equation…

Q: Molar mass is defined as: a. the mass of one mole of a substance in grams. b. the mass of one gram…

A: option a

Q: number

A: According to the question, the atomic number of oxygen is 8 and the atomic number of sulfur is 16.…

Q: How many moles are in 7.8 g of NaF?   A. 0.133 mol   B. 0.19 mol   C. 327.6 mol    D. 7.8 mol

A:

Q: What is the molar mass of magnesium phosphate? A. 310 grams / mole B.263 grams / mole C.71.3…

A: 1- First we will see the molecular formula :  Magnesium ion  : Mg2+  Phosphate ion : PO43-  Both are…

Q: 10.6 g of anhydrous sodium carbonate combines with 18g of water to form hydrated sodium carbonate…

A:

Q: 4.00 moles of carbon have a mass of? a. 4.60 g b. 23.0 g c. 92.0 g d. 11.0 g e. 48.0 g

A: The molar mass of carbon=12 g/mol The given number of moles of Carbon=4.0 mol

Q: 4. Which sample represents the smallest number of moles? a. 1L H2 at STP b. 1L Argon at STP C. 1L of…

A:

Q: How many moles are present in 0.098 grams of HCl?

A: Moles is given by  Moles = mass / molar mass  And molar mass = sum of Atomic masses of all atoms in…

Q: 5. Magnesium Phosphate a. Calculate it's molar masS b. 183.58g of Magnesium Phosphate = mols…

A: Number of moles is the ratio of given mass of the substance to the molecular mass of the substance.

Q: The molar mass of sodium fluoride is A. 51.1 g/mol B. 42.0 amu C. 42.0 g/mol D. 20 g/mol E. 25 g/mol

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Q: If a bucket holds 2.00 lb of NaOH, how many gram moles of NaOH does it contain?  A. 10 B. 15.6 C.…

A:

Q: What is the mass, in grams, of 6.52 moles of hydrogen gas? Select one: a. 3.93e24 g b. 13.1 g c.…

A: The mass of hydrogen gas is calculated as shown below where n is the number of moles and M is the…

Q: Calculate how many water molecules there are for 1000g of water, H2O. A. 3.34 x 1025 water…

A: Given : Mass of H2O = 1000 g

Q: Calculate the percent by mass of each element in the following compounds. a. Methane, CH4 b.…

A: Percent by mass is simply the ratio of atomic mass of element present in compound to total molar…

Q: The molar mass of NO2 is 46.01 g/mole.  How many moles of NO2 are present in 114.95g?   A.…

A: Molar mass of NO2 is given that is 46.01g/mol.and asked number of moles in 114.95g.

Q: 13. The molar mass of an element is numerically equivalent to what? a. 1 amu c. 1 mole d. its atomic…

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Q: How many moles of aluminum are in an aluminum block that meausres 3.00cm x 3.00 cm x 5.00cm? The…

A: Density: It is a ratio of mass of an object to its volume. Its SI unit is g / cm3. It creases with…

Q: particles

A: If the particles of the molecule have more energy then it will transfer energy to another particles…

Q: Which of the following statement is correct about moles? A. 1 mole of Argon gas has the same number…

A: We know that, 1 mole of any substance contains  = 6.022 x1023 atoms  Therefore,  1 mole of Argon…

Q: How many atoms of Hydrogen are in 1.96 moles of Hydrogen?

A:

Q: 9- An unknown compound is composed of C, H, and O. A 0.1005 g sample of this compound is combusted,…

A: We have to predict the empirical formula of compound 0.1005 g sample, produces 0.2829 g of CO2,…

Q: 10 gram of which substance contain the greatest number of Hydrogen Atoms? A. 10 grams of CH4 B. 10…

A:

Q: How many moles of Ca3(PO4)2 are in 1.00 g of Caz(PO4)2? (Use whole molar masses from periodic table…

A: Given mass of Ca3(PO4)2 = 1.00 g  From periodic table we know, Molar masses of Ca = 40 g/mol , P =…

Q: The number of hydrogen atoms in 0.500g of glucose (C6H12O6) is a. 12 b. 1.67x1021 c. 2.78x10-3 d.…

A: