Question 1

Which of the following is the correct chemical formula for potassium sulfate?

Accepted Answer

$$\mathrm{K_2SO_4}$$

Question 2

How many significant figures are present in the number 0.00230122?

Accepted Answer

6

Question 3

What is the correct name for the compound $$\mathrm{Sr(NO_3$)_2}$$?

Accepted Answer

Strontium nitrate

Question 4

Which of the following is the correct formula for tetraphosphorous decoxide?

Accepted Answer

$$\mathrm{P_4O_{10}}$$

Question 5

A student dissolves 26.0 grams of $$\mathrm{$$BaCl_2$$} ($$molar mass = 208.2 g/mol) in enough water to make 450.0 mL of solution. What is the molarity of the solution?

Accepted Answer

0.278 M

Question 6

Which of the following is the correct formula for barium chlorate?

Accepted Answer

$$\mathrm{Ba($$ClO_3$$)_2}$$

Question 7

What is the correct name for the compound $$\mathrm{Cu($$ClO_4$$)_2}$$?

Accepted Answer

Copper(II) perchlorate

Question 8

Which of the following numbers has three significant figures?

Accepted Answer

13.3 $$	imes$$ $$10^4$$

Question 9

Which of the following is the correct formula for magnesium chloride?

Accepted Answer

$$\mathrm{$$MgCl_2$$}$$

Question 10

A solution is prepared by dissolving 5.00 g of NaCl (molar mass = 58.44 g/mol) in enough water to make 250.0 mL of solution. What is the molarity of the solution?

Accepted Answer

0.342 M

Question 11

Which of the following is the correct name for $$\mathrm{HBr(aq)}$$?

Accepted Answer

Hydrobromic acid

Question 12

Which of the following is the correct formula for calcium nitrite?

Accepted Answer

$$\mathrm{Ca(NO_2$)_2}$$

Question 13

Which of the following is the correct name for $$\mathrm{Na_2SO_4}$$?

Accepted Answer

Sodium sulfate

Question 14

Which of the following is the correct formula for hydrogen phosphite?

Accepted Answer

$$\mathrm{H_3PO_3}$$

Question 15

Which of the following is the correct formula for sulfur dioxide?

Accepted Answer

$$\mathrm{SO_2$}$$

Question 16

A sphere has a radius of 2.00 cm. What is its volume in $$\mathrm{cm^3$}$$? (Use $$\pi = 3.141592$$ and $$V = \frac{4}{3}\pi r^3$)

Accepted Answer

33.51 $$\mathrm{cm^3$}$$

Question 17

Which of the following is the correct name for $$\mathrm{$$HCIO_4$$}$$?

Accepted Answer

Perchloric acid

Question 18

Which of the following is the correct formula for copper(II) perchlorate?

Accepted Answer

$$\mathrm{Cu($$ClO_4$$)_2}$$

Question 19

Which of the following is the correct formula for ammonium acetate?

Accepted Answer

$$\mathrm{NH_4C_2H_3O_2}$$

Question 20

A student needs to prepare 500.0 mL of a 0.250 M $$\mathrm{Na_2SO_4}$$ solution. How many grams of $$\mathrm{Na_2SO_4} ($$molar mass = 142.04 g/mol) are required?

Accepted Answer

17.8 g

General Chemistry 115: Exam 1B Study Notes

스터디 가이드 - 연습 문제

학습 가이드 - 플래시카드