a iss or copper (il) phosphate? (380.578 g/mol One has 50 moles of chlorine gas

Question

a iss or copper (il) phosphate? (380.578 g/mol One has 50 moles of chlorine gas and 50 moles of fluorine gas. Choose all that apply a. Chlorine and fluorine have the same number of protons b. 2. Chlorine and fluorine have the same number of moles. Chlorine and fluorine have the same number of grams. Chlorine and fluorine have the same number of atoms. e. Chlorine and fluorine have the same number of molecules. c. d. f. Chlorine and fluorine have the same molar mass. 3. How many grams are in 3.82 moles of sodium bicarbonate? (321 gl 4. How many molecules are in 68.20 grams of sulfur trioxide? [5.13 x 10 mic 5 what is themass of 16 atoms of rin? How many moles are in 5x 10 atoms of Fe? 1.5 x 10" al. 6. How many grams of cobalt are in 65.7 grams of cobalt (l) sulfate? [19.1 g 7. What is the percent mass composition of magnesium chlorite? of water in magnesium sulfate heptahydrate? 8. What is the molecular formula of nicotine if the empirical formula is CsH,O and the molar mass is 166.2 9. What is the molecular formula of a compound that has an empirical formula HO and a molar mass equal to (8 X 10° mol 44.537 m.%; 0: [Mg: 15.266 m.%; CI: g/mol? [CtoH40 34 g/mol? [H202 40.197 m.%; H2O: 51.164 m.%) 1. What is the molarity of a solution prepared by dissolving 123 g of sodium carbonate in sufficient water to produce 1,200 ml. of solution? [0.967 M 2. How many moles of sodium hydroxide are in 25.0 mL of a 0.500 M solution? [0.0125 moll 3. How many grams of sodium sulfate are required to prepare 250 mL of a 0.500 M solution? [18 g 4. How many grams of barium chloride would be needed to prepare 500 mL of a 0.200 M solution? 120 gl 5. What volume of 6.0 M HCI is necessary to prepare 250 mL of 1.8 M HCi? 175 mL] 6. How many moles of sodium chloride would be needed to make 1 liter of a 1 M solution? A 0.5 M solution? 7. To increase the concentration of an existing aqueous solution, one must a. evaporate some of the water b. add more water c. pour out some of the solution d. add more of the solution 8. What is the molarity of a solution containing 6.0 moles of solute dissolved in a total volume of 200.0 mL? (30M] GASES 1. In a closed container, when all other variables are constant, what happens to the a. b. c. d. pressure when the temperature is decreased? temperature when the pressure is decreased? number of molecules when the temperature is decreased? amount of mass when the temperature is increased? 2. A metal cylinder contains a mixture of four gases; nitrogen, oxygen, hydrogen, and ozone (O). The manometer indicates a total pressure equal to 998 mm Hg. If the partial pressures of nitrogen, oxygen, and hydrogen are 65 mm Hg. 28 mm Hg. and 125 mm Hg. respectively, what is the partial pressure exerted by ozone? (786 mm Hgl 3. What is the pressure of 0.395 kg of oxygen gas that occupies a 30.0 L Mylar bailoon at 25 C? [10.1 atm)

Explanation / Answer

Ans 2 : The correct choices are :

b) Chlorine and fluorine have the same number of moles.

d) Chlorine and fluorine have the same number of atoms.

e) Chlorine and fluroine have the same number of molecules.

SInce the number of moles are mentioned in the question itself , so their moles are equal.

Now each mole has same number of entities so their number of molecules are also same.

Both these gases are dimolecular , so their number of atoms will also be same.

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