Question

question 11 (1 point)
listen
42.0 ml of a liquid has a mass of 35.00 g. calculate the density.
1470 g/ml
1.20 g/ml
1.470 g/ml
0.833 g/ml
question 12 (1 point)
listen
which of these is an example of a physical property?
a) toxicity of cyanide
b) lead becomes a liquid when heated to 601°c
c) neutralization of stomach acid with an antacid
d) corrosiveness of sulfuric acid
e) flammability of gasoline

Explanation:

Question 11

Step1: Recall density formula

Density $
ho = \frac{\text{mass}}{\text{volume}}$

Step2: Substitute given values

$
ho = \frac{35.00\ \text{g}}{42.0\ \text{mL}}$

Step3: Calculate the result

$
ho = 0.833\ \text{g/mL}$

A physical property is a characteristic of a substance that can be observed or measured without changing the substance's chemical identity.

• Toxicity, neutralization, corrosiveness, and flammability all involve chemical changes or reactions.
• Melting of lead only changes its physical state (solid to liquid) without altering its chemical composition.

Answer:

0.833 g/mL

---

Question 12