Question

use the following information to answer question 8.
a student takes a step with a snowshoe, exerting \\(600\text{ n}\\) of force on the ground. the snowshoe has an area of \\(0.15\text{ m}^2\\).
snowshoes allow users to walk on soft snow without sinking.

1. when taking a step, the student exerts a pressure of _________ on the ground.

a. \\(0.025\text{ n/m}^2\\)
b. \\(90\text{ n/m}^2\\)
c. \\(615\text{ n/m}^2\\)
d. \\(4000\text{ n/m}^2\\)

use the following information to answer question 9.
the following graph shows how many grams of baking soda will dissolve into \\(250\text{ ml}\\) of water at various temperatures.
solubility of baking soda in \\(250\text{ ml}\\) of water

1. a student fills a beaker with \\(100\text{ ml}\\) of water at \\(25\text{ }^{\circ}\text{c}\\). the concentration of the baking soda solution in the beaker is

a. \\(1\text{ g/100 ml}\\)
b. \\(5\text{ g/100 ml}\\)
c. \\(10\text{ g/100 ml}\\)
d. \\(25\text{ g/100 ml}\\)

Explanation:

Calculate pressure exerted on the ground

Using the Pressure Calculation knowledge point

$$
LATEXBLOCK0
$$

Read solubility from the graph

Using the Solubility Curves knowledge point

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$$

Calculate concentration in standard units

Using the Solution Concentration knowledge point

$$
LATEXBLOCK2
$$

Answer:

Question 8

• A. \(0.025\text{ N/m}^2\)
• B. \(90\text{ N/m}^2\)
• C. \(615\text{ N/m}^2\)
• D. \(4000\text{ N/m}^2\) (Correct answer)

Question 9

• A. \(1\text{ g/100 mL}\)
• B. \(5\text{ g/100 mL}\)
• C. \(10\text{ g/100 mL}\) (Correct answer)
• D. \(25\text{ g/100 mL}\)