Q: A patient receives 2.5 mL of a medication. How many microliters is this dose? Use the metric relationships provided.

$$2.5 \times 10^3$ \text{ \mu L}$$

Q: Which of the following is the correct formula for converting 37°C to Fahrenheit?

$$\text{°F} = 1.8 \times 37 + 32$$

Q: A solution contains 0.005 L of saline. How many milliliters is this?

$$0.005 \times 10^3$ = 5 \text{ mL}$$

Q: A sample of water is heated from 20°C to 80°C. What is the change in temperature in Fahrenheit?

$$\Delta \text{°F} = 1.8 \times (80 - 20) = 1.8 \times 60 = 108 \text{°F}$$

Q: A chemist needs to prepare 250 mL of a solution. How many liters is this?

$$250 \times 10$$^{-3}$$ = 0.25 \text{ L}$$

Q: What is the formula for the ionic compound formed from magnesium and acetate?

$$\text{Mg(CH}_3\text{CO}_2)_2$$

Question 1

A patient receives 2.5 mL of a medication. How many microliters is this dose? Use the metric relationships provided.

Accepted Answer

$$2.5 	imes 10^3$ 	ext{ \mu L}$$

Question 2

Which of the following is the correct formula for converting 37°C to Fahrenheit?

Accepted Answer

$$	ext{°F} = 1.8 	imes 37 + 32$$

Question 3

Which of the following ions is named 'Stannic' according to the table of common ion names?

Accepted Answer

$$	ext{Sn}^{4+}$$

Question 4

A solution contains 0.005 L of saline. How many milliliters is this?

Accepted Answer

$$0.005 	imes 10^3$ = 5 	ext{ mL}$$

Question 5

Which of the following compounds contains a polyatomic ion?

Accepted Answer

$$	ext{KNO}_3$$

Question 6

What is the systematic name for $$	ext{Fe}^{2+}$$?

Accepted Answer

Iron(II)

Question 7

Which element is chemically similar to sodium?

Accepted Answer

Potassium

Question 8

A sample of water is heated from 20°C to 80°C. What is the change in temperature in Fahrenheit?

Accepted Answer

$$\Delta 	ext{°F} = 1.8 	imes (80 - 20) = 1.8 	imes 60 = 108 	ext{°F}$$

Question 9

Which of the following is the correct formula for the compound formed between calcium and nitrate?

Accepted Answer

$$	ext{Ca(NO}_3)_2$$

Question 10

Which element has the same electron configuration as the oxide ion ($$	ext{O}^{2-}$$)?

Accepted Answer

Neon

Question 11

A chemist needs to prepare 250 mL of a solution. How many liters is this?

Accepted Answer

$$250 	imes 10$$^{-3}$$ = 0.25 	ext{ L}$$

Question 12

Which of the following is a physical change?

Accepted Answer

Melting an ice cube

Question 13

What is the formula for the ionic compound formed from magnesium and acetate?

Accepted Answer

$$	ext{Mg(CH}_3	ext{CO}_2)_2$$

Question 14

Which of the following is the correct scientific notation for a nanometer?

Accepted Answer

$$10^{-9}$$

Question 15

Which of the following is the correct formula for the compound formed between lead(II) and sulfate?

Accepted Answer

$$	ext{PbSO}_4$$

Question 16

Which of the following elements is a noble gas?

Accepted Answer

Neon

Question 17

Which of the following is the correct electron configuration for fluorine?

Accepted Answer

$$1s^2$$ $$2s^2$$ $$2p^5$$

Question 18

Which of the following is an ionic compound?

Accepted Answer

$$	ext{NaNO}_2$$

Question 19

Which of the following is NOT an exact number?

Accepted Answer

120 meters

CHEM 140A Exam 1 Study Guide: Matter, Measurement, Atoms, and Ionic Compounds

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