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julia-pushkina [17]
3 years ago
14

Why do astronauts, miners, divers and mountaineers carry oxygen cylinders with them?

Chemistry
1 answer:
emmainna [20.7K]3 years ago
6 0
So they can breathe because us humans need oxygen
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Molarity, chemistry general chemistry
Anna007 [38]

Answer:

a. 0.026 M

Explanation:

Molarity is a measure of the molar concentration of a solution. It can be calculated by using the following formula:

Molarity = n/V

Where;

n = number of moles (mol)

V = Volume of solution (L)

Based on the information provided;

V = 23.2mL = 23.2/1000 = 0.0232 L

n = ?

To get the number of moles of KHP, we use the formula:

mole = mass/molar mass

mole (n) = 0.123/204.2

mole (n) = 0.0006024mol

Molarity = n/V

Molarity = 0.0006024 ÷ 0.0232

Molarity = 6.024 × 10^-4 ÷ 2.32 × 10^-2

Molarity = 6.024/2.32 × 10^(-4--2)

Molarity = 2.59 × 10^-2

Molarity = 0.026 M

4 0
3 years ago
g Assuming that the specific heat of the solution is 4.18 J/(g⋅∘C), that its density is 1.00 g/mL, and that the calorimeter itse
KengaRu [80]

Answer:

You haven't given enough information, you have to tell us how many grams of which reactant are present, as well as the initial and final temperatures of the solution.

Explanation:

8 0
3 years ago
Which of the following items is NOT a compound?
Ede4ka [16]
NaOH but you didnt give options
7 0
2 years ago
What are the advantages of using Fahrenheit ?
Effectus [21]

Answer:

You can better relate to the air temperature.

Explanation:

Fahrenheit gives you almost double the precision of Celsius without having to use decimals.

5 0
3 years ago
Read 2 more answers
Select the steps that are associated with energy entering the system. Check all that apply.
quester [9]

Answer: option c. the mixing of solute and solvent molecules

Explanation:

8 0
3 years ago
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