Question

How many grams of sodium iodide are required to react completely with 3.01 x 10²³ molecules of chlorine?

2 NaI + Cl_{2 ------>} I₂ + 2 NaCl

	A.	1.50 g
	B.	37.5 g
	C.	150. g
	D.	74.9 g

1 points   

QUESTION 2

When 22.0 g of NaOH and 21.0 g of H₂SO₄ are mixed and react according to the reaction: 2 NaOH + H₂SO₄ ------>  Na₂SO₄ + 2 H₂O, which is the limiting reagent?

	A.	NaOH
	B.	H2SO4
	C.	Na2SO4
	D.	Neither reagent is limiting.

1 points   

QUESTION 3

Calculate the percent yield for the following reaction if 233 g of NO₂ reacted and 175 g of HNO₃ were produced

3 NO₂ + H₂O ------> 2 HNO₃ + NO

	A.	75.1%
	B.	82.2%
	C.	27.4%
	D.	60.8%

1 points   

QUESTION 4

What mass of H₂O is produced when 12.0 g of HCl react completely in the following equation?

6 HCl + Fe₂O₃ -----> 2F eCl₃ + 3 H₂O

	A.	2.97g
	B.	39.4g
	C.	27.4g
	D.	110.0g

1 points   

QUESTION 5

Consider the following unbalanced equation. How many molecules of O₂ will be required to produce 1.60 mol of water?

H₂ + O₂ ------> H₂O

	A.	4.82 x 1023 molecules
	B.	9.64 x 1023 molecules
	C.	1.93 x 1024 molecules
	D.	0.800 molecules

1 points   

QUESTION 6

How many moles of iron(III) oxide are required to completely react with 1.40 x10²² atoms of carbon in the following reaction?

Fe₂O₃ + 3C ------> 2Fe + 3CO

	A.	0.0232 mol
	B.	0.00775 mol
	C.	0.0697 mol
	D.	4.67 x 1021 mol

1 points   

QUESTION 7

Which substance is the limiting reactant when 2.00 mol of cobalt are reacted with 1.50 mol of lead(II) chloride in the following equation?

Co + PbCl₂ → CoCl₂ + Pb

	A.	Co
	B.	PbCl2
	C.	CoCl2
	D.	Pb

1 points   

QUESTION 8

How many grams of molecular chlorine will be required to completely react with 0.0223 mol of sodium iodide according to the following reaction?
2 NaI + Cl₂ ------> 2 NaCl + I₂

	A.	1.57 10-4 g
	B.	3.16g
	C.	0.0112g
	D.	0.791g

1 points   

QUESTION 9

Consider the following reaction: PCl₃ + Cl₂ ------> PCl₅. If the percent yield is 66.3%, what mass of PCl₅ is actually formed when 61.3 g of Cl₂ reacts with excess PCl₃?

	A.	40.6 g
	B.	92.5 g
	C.	119. g
	D.	145. g

1 points   

QUESTION 10

Which is the limiting reactant when 12.0 mol of CH₄ are reacted with 20.0 mol of O₂ in the following equation?

CH₄ + 2 O₂ -------> CO₂ + 2 H₂O

	A.	CH4
	B.	O2
	C.	CO2
	D.	H2O

1 points   

QUESTION 11

Which is the limiting reactant when 3.00 mol of MnO₂ are reacted with 10.0 mol of HCl in the following equation?

MnO₂ + 4HCl -----> MnCl₂ + 2H₂O + Cl₂

	A.	MnO2
	B.	HCl
	C.	MnCl2
	D.	H2O

1 points   

QUESTION 12

In a reaction to produce chlorine gas, the theoretical yield is 25.6 g. What is the percent yield if the actual yield is 20.2 g?

	A.	21.1%
	B.	127%
	C.	20.2%
	D.	78.9%

1 points   

QUESTION 13

What mass of oxygen is consumed when 54.0 g of water is produced in the following equation?

2 H₂ + O₂ -------> 2 H₂O

	A.	47.9g
	B.	0.167g
	C.	0.667g
	D.	1.50g

1 points   

QUESTION 14

Calculate the percent yield for the following reaction if 76.8 g of H₂O reacted and 125 g of NO were produced.

3 NO₂ + H₂O -------->  2 HNO₃ + NO

	A.	99.0%
	B.	61.4%
	C.	60.0%
	D.	97.7%

1 points   

QUESTION 15

In a reaction to produce ammonia, the theoretical yield is 420. g. What is the percent yield if the actual yield is 350. g?

	A.	83.3%
	B.	20.0%
	C.	16.7%
	D.	120.%

Answer 1

Question 1 2 NaI + c * I, + 2 place According to the stoichiom ometery of the reaction 2 mole of Na I will head with 1 mole of co. Given 3.6141023 molecules of CO2 From mole concept Imole = 6,62 x 182 ? molecule molea molar mars No of moles of cl, a 3,01 x 1023 20.5 mole 6,2 x 1023 Imole che realt with 2 mde Na I 0,5 mole ile realt with I more No I i MoleNaI 150g is correct option ©