Question

A chemist needs to order sodium bicarbonate for a classroom experiment. Each of the 43 students will require 32.8 g of sodium bicarbonate for the experiment. If the chemist already has 0.55 kg of sodium bicarbonate in the cabinet, how much does the chemist need to order?

A. 3.04 kg
B. 2.49 kg
C. 2.99 kg
D. 2.57 kg

Answer 1

The chemist needs to order approximately 0.86 kg of sodium bicarbonate for the experiment, which differs from the provided answer choices.

Step-by-step explanation:

To calculate how much sodium bicarbonate the chemist needs to order for the classroom experiment, we first need to determine the total amount required for all students, then subtract the amount the chemist already has.

Firstly, for each of the 43 students requiring 32.8 g, we calculate the total mass needed:

• 32.8 g/student × 43 students = 1410.4 g

Next, we convert the mass the chemist already has from kilograms to grams:

• 0.55 kg = 550 g

Now, we subtract the mass available from the total mass needed to find out how much more needs to be ordered:

• 1410.4 g – 550 g = 860.4 g

Finally, we convert the mass to order from grams to kilograms:

• 860.4 g = 0.8604 kg

Therefore, the chemist needs to order approximately 0.86 kg of sodium bicarbonate, which is not listed in the answer choices provided. Thus, there may have been a misunderstanding in the question, as none of the provided options (A. 3.04 kg, B. 2.49 kg, C. 2.99 kg, D. 2.57 kg) match the calculated requirement.