Question

1. the standard si unit for temperature is: a) atmospheres. b) kelvin. c) fahrenheit. d) celsius. e) none of the above. 17) how many inches are in 2.80 ft? a) 0.233 b) 33.6 c) 4.29 d) 34 e) none of the above 18) how many milliliters are in 17.5 l? a) 1.75 x 10^4 b) 1.75 x 10^3 c) 175 d) 1.75 x 10^(-2) e) none of the above 19) a lead ball has a mass of 55.0 grams and a density of 11.4 g/cm^3. what is the volume of the ball? a) 4.82 ml b) 0.207 l c) 0.207 ml d) 4.82 l e) none of the above 20) the correct multiplier for the prefix milli is: a) 10^(-3) b) 10^(-9) c) 10^(-12) d) 10^(-6) e) none of the above true/false. write t if the statement is true and f if the statement is false. 21) in physical changes, the atoms or molecules that compose the matter do not change their identity, even though the matter may change its appearance. 22) a chemical change occurs when matter does not change its composition. 23) liquid and gas molecules can be compressed while in a solid, the molecules are incompressible.

Explanation:

Step1: Recall SI unit of temperature

The standard SI unit for temperature is Kelvin.

Step2: Use conversion factor for feet - inches

Since 1 ft = 12 inches, for 2.80 ft, the number of inches is $2.80\times12 = 33.6$ inches.

Step3: Use conversion factor for liters - milliliters

Since 1 L = 1000 mL, for 17.5 L, the number of milliliters is $17.5\times1000=1.75\times 10^{4}$ mL.

Step4: Use density - mass - volume formula

The formula is $
ho=\frac{m}{V}$, so $V = \frac{m}{
ho}$. Given $m = 55.0$ g and $
ho=11.4$ g/cm³, $V=\frac{55.0}{11.4}\approx4.82$ cm³. Since 1 cm³ = 1 mL, the volume is 4.82 mL.

Step5: Recall multiplier for prefix milli

The multiplier for the prefix milli is $10^{-3}$.

Step6: Recall physical change concept

In physical changes, the atoms or molecules do not change their identity, so the statement is True.

Step7: Recall chemical change concept

A chemical change occurs when matter changes its composition, so the statement is False.

Step8: Recall states of matter compressibility

Liquid and gas molecules can be compressed, and solid molecules are relatively incompressible, so the statement is True.

Answer:

1. B. Kelvin
2. B. 33.6
3. A. $1.75\times 10^{4}$
4. A. 4.82 mL
5. A. $10^{-3}$
6. T
7. F
8. T