7. How many sodium atoms is equal to five moles of the atoms? а. 5 b. 3.011 x 1024 с. 500 d. 6.022 x 1023 8. One mole is equivalent to a. 3.75 g Hydrogen b. 16 g Oxygen c. 14 g Carbon d. 190 g Gold 9. What does the mole measure? C. amount of a substance d. density of a gas a. mass of a substance b. volume of a gas

Q: In 1961, scientists agreed that the atomic mass unit (amu)would be defined as the mass of an atom of…

A: Yes, the Avogadro number is changed and now becomes bigger than previously. Yes, the definition of a…

Q: Mass of product…

A:

Q: What does the mole concept provide?

A: Mole concept gives the idea of calculation of moles. Mole is a commonly used unit for measuring…

Q: Part 1: Molar Mass. Find the molar mass for the substances using the average atomic mass from the…

A: Note: Since you have posted a question with multiple independent subparts, we will solve first part…

Q: Convert the 5.62 × 1025 atoms of B to moles.

A:

Q: a. How many carbon atoms are in the sam b. How many hydrogen atoms are in the s c. How many oxygen…

A:

Q: A 94.8 g sample of Fe;O4 reacts with 17.39 g of CO to form FeO and CO2. FegOals) + COlg)-- 3FEO(s) +…

A: Given chemical reaction :  Fe3O4 + CO ---> FeO + CO2

Q: 1. A sample of 2 tsp of sugar (C12H22O11) weighs 9.00 g. a. Record each step needed to calculate the…

A: We can calculate the moles of any substance from the following formula : Moles of substance = mass…

Q: Can I have at least two reason why. The mass of the mgo formed could be higher than expected

A: To find: Why the mass of MgO formed could be higher than the expected.

Q: 8.00 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have…

A: Assuming the molecular formula of compound is CaHbOc  And since moles = mass / molar mass Hence…

Q: How many moles are in 11.9 grams of argon (Ar)?

A:

Q: Determine the number of oxygen atoms (Units) found in 205 g of potassium sulfate, K2SO4

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

Q: 1.25 moles of PbO2 have a mass of

A: Given  Number of mole of PbO2  = 1.25 mole  Mass = ?

Q: Tin has 10 stable isotopes. The heaviest, 124Sn, makes up 5.80% of naturally occurring tin atoms.…

A: a) The number atoms of 124Sn are present in 25.0 g of naturally occurring tin is to be calculated.…

Q: What is the mass of 4.27 moles of lithium nitrate?

A: Mass = Number of moles x Molar mass Molecular formula: Ti(NO3)4 Molar mass of Ti(NO3)4 = 295.89…

Q: Tin has 10 stableisotopes. The heaviest, 124Sn, makes up 5.80% of naturally occurring tin atoms. How…

A: Given that,  124Sn isotope makes up 5.80% of naturally occuring tin atoms  Mass of tin sample = 57.0…

Q: (a) Determine the mass of sodium metal that contains the same number of moles as 87.2 g of copper…

A: (a) Determine the mass of sodium metal that contains the same number of moles as 87.2 g of copper…

Q: A gallon of water has a mass of 3.79 kg. How many moles of water (18.02 g/mol) is this?

A: Given : Mass of water = 3.79 Kg  And molar mass of water = 18.02 g/mol

Q: Determine the mass, in grams, of 0.465 moles of S (1 mol of S has a mass of 32.07 g).

A: Given that, Moles of S= 0.465 moles MM of S= 32.07 g mol-1 then,

Q: Determine the number of moles of H in each sample.(a) 4.67 mol H2O (b) 8.39 mol NH3(c) 0.117 mol…

A: Number of moles of a substance is the mass of substance present in a liter of solution.

Q: d. How many grams of potassium metal remain after the reaction? How many grams of water remain after…

A: K + H2O ------> KOH + H2   moles     1       1                1       1  Caculate…

Q: How is the Mole concept calculated?

A: Mole concepts can be calculated as follows

Q: Calcium oxide (CaO), also known as quicklime, can be produced by heating calcium carbonate (CaCO3).…

A: The molecular formula of calcium oxide is CaO. It states that one molecule of calcium contains one…

Q: Calculate (a) the number of atoms in 1.05 × 10−6 mole of helium and (b) the number of moles of…

A: a.

Q: Part C A sample of propane, C3 H8, contains 15.8 moles of carbon atoms. How many total moles of…

A: Given, sample of propane contains 15.8 moles of carbon.The moles of hydrogen present in the sample…

Q: Aluminium has a density of 2.70 | g/cm3 . How many moles of aluminum are in a 13.2 cm3 block of the…

A: Density :- Density of a substance is its amountof mass per unit volume . So , density is the…

Q: How many moles of calcium atoms do you have if you have 7.92 × 10²¹ atoms of calcium. (The mass of…

A: Given: Atoms of calcium is 7.92 × 10²¹ Mass of one mole of calcium is 40.08 g.

Q: Which sample will have the greatest mass? A. 2 mol of SO2 B. 1 mol of SO2 C. 1 mol of SO3 D. 2…

A:

Q: number

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

Q: Determine the mass in grams of 2.25 × 10²¹ atoms of copper. (The mass of one mole of copper is 63.55…

A:

Q: Determine the mass, in grams, of 0.580 moles of Pb (1 mol of Pb has a mass of 207.2 g).

A:

Q: Natural rubidium has the average mass of 85.4678 u and is composed of isotopes85Rb (mass = 84.9117…

A: Mass of the Rb = 86.913 amu. Given data: 85.4678 amu is average mass of the Rb Mass of 85Rb =…

Q: Substance X was analysed and found to contain 40.00 % carbon, 6.67 % hydrogen and 53.33 % oxygen by…

A:

Q: How many moles of mercury (Hg) would be found in 250. grams of mercury?

A: Given that: mass of Hg = 250 g To find: number of moles of Hg?

Q: A is asking If the carbon in the pencil weighs 1.50 grams, how many carbon atoms does the pencil…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Determine the mass, in grams, of 0.805 moles of S (1 mol of S has a mass of 32.07 g).

A: The general expression that shows relationship between moles and mass is as follows, Moles=MassMolar…

Q: A. Calculate the number of moles for B. Calculate the mass of the each given. 1.) 45g of table sugar…

A: Given: Mass of sugar = 45 g Moles of nitrogen gas = 2.7 moles Standard data: The molar mass of…

Q: 4. How many grams would 2.5 moles of magnesium (Mg) weigh? 5. How many grams would 10.0 moles of…

A: 4) Given : Moles of Mg = 2.5 mol Since atomic mass of Mg = 24.3 g/mol Hence mass of Mg = moles X…

Q: A The total mass of the system will be the same because the atoms were only rearranged. The total…

A: A closed system is the one which do not allow any transfer of mass or energy to the surrounding.

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

A:

Q: A 3.53-gg sample of aluminum completely reacts with oxygen to form 6.67 gg of aluminum oxide. Use…

A:

Q: 8 moles of H2. 4 moles of He and 0.5 mole of 02 will have

A:

Q: Determine the mass, in grams, of 0.675 moles of S (1 mol of S has a mass of 32.07 g).

A:

Q: Part a) Mr. Scholl likes to grow tomatoes in his backyard garden. Last year he grew a 6.27 × 10 to…

A:

Q: Answer the following questions using the data in the table below.  See the calculations section…

A:

Q: 19. A certain sample of dichlorine heptoxide consists of 4200 oxygen atoms combined with chlorine…

A: According to the given data the sample is dichlorine heptoxide. The sample consists of a total of…

Q: How many moles are in 130 gram of N?

A: Given :-  Mass of N = 130 g  Atomic weight of N = 14.01 g.mol-1  To calculate :-  Number of moles of…

Q: Mass of ground pill Volume of KMNO, Moles of KMNO, Moles of Fe2+ Moles of FeSO, • 7H,O Mass of FeSO,…

A: Given: Molarity of KMnO4 = 0.0114809 M Balanced reaction : MnO4− + 5 Fe2+ + 8 H+ → Mn2+ + 5 Fe3+ + 4…

Q: Aluminium has a density of 2.70 g/cm3. How many moles of aluminum are in a 13.2 cm3 block of the…

A: a) Density of Al = 2.7 g/cm3 We are having 13.2 cm3 Al Mass of Al = 2.7 g/cm3 * 13.2 cm3 = 35.6 g Al…