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ANTONII [103]
2 years ago
8

Which of the following is not a reason to volunteer?

Chemistry
2 answers:
Helen [10]2 years ago
8 0

Answer:

hi

Explanation:

A. to make money

have a nice day

bye

Reptile [31]2 years ago
4 0

Answer:

A. To make money

Explanation:

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Katena32 [7]
East is the cold front
6 0
3 years ago
Convert 0.74Kcal/min to cal/sec
professor190 [17]
<span>0.74 Kcal/min x 1000 cal/60 s         


</span>
6 0
3 years ago
Which of the following statements best compares the pH value of H3PO4 and HCl?
wel

Answer:

Option B. Both have a pH less than 7, but H3PO4 has a lower pH than HCl

Explanation:

Those are acid, so the pH would be < 7.

H₃PO₄ is a weak acid with 3 dissociations

HCl is a strong acid.

pH depends on [H]⁺

H₃PO₄  →  3H⁺  +  PO₄⁻³

HCl →  H⁺  +  Cl⁻

If both acid, have the same concentration, [H⁺]H₃PO₄ > [H⁺]HCl, that's why the pH from the phosphoric will be lower.

5 0
3 years ago
What is the pressure of 0.5 mol of nitrogen gas in a 5 L container at 203 K
vlada-n [284]

Answer:

=1.666 liters

Explanation:

1 mole of a has at standard temperature and pressure occupies a volume of 22.4 liters.

0.5 moles of nitrogen occupy a volume of (0.5 moles×22.4 dm³/mol)/ 1

=11.2 liters.

Standard pressure= 1 atmosphere (Atm)

Standard temperature = 273.15 Kelvin

According to Combined gas equation, P₁V₁/T₁=P₂V₂/T₂

Let us take the conditions under standard conditions as the reference, with the subscript 1 and the conditions under the 5L container to be scenario 2 with subscript 2.

Therefore P₂ =P₁V₁T₂/T₁V₂

Substituting for the values we get:

P₂= (1 atm× 11.2L ×203K)/ (273K×5L)

=1.666 atm

5 0
3 years ago
Which mountain range was once the tallest in the world?
Ne4ueva [31]

Answer:

A

Explanation:

7 0
3 years ago
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