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3 years ago

7

I need help with 14 and 15 please!

1 answer:

Dima020 [189]3 years ago

8 0

Isotopes of an element will contain the same number of protons and electrons but will differ in the number of neutrons they contain. In other words, isotopes have the same atomic number because they are the same element but have a different atomic mass because they contain a different number of neutrons.

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What is the density in g/L of gas with a molar mass of 2.016 g/mol at 4.77 atm and 118k?

kotegsom [21]

n / V = P / RT = (4.77 atm) / ((0.08205746 L atm/K mol) x (118 K)) = 0.4926 mol/L

(2.016 g/mol) x (0.4926 mol/L) = 0.993 g/L

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3 years ago

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Which acid has the greatest acid dissociation constant?

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A sailboat is pushed by a steady wind with a force of 4000 N. Its acceleration is 2

AveGali [126]

Answer:

<h2>2000 kg</h2>

Explanation:

The mass of the sailboat can be found by using the formula

$m = \frac{f}{a} \\$

f is the force

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$m = \frac{4000}{2} \\$

We have the final answer as

<h3>2000 kg</h3>

Hope this helps you

6 0

3 years ago

If 15 grams of Carbon dioxide is produced in a chemical reaction, how many grams of Carbon must be consumed in the reaction if w

guajiro [1.7K]

Answer:

Quantity of Carbon is 4.09 gm

Explanation:

Equation of carbon reacting with oxygen to give carbon dioxide is given by

C + $O_{2}$ ⇒ C $O_{2}$

One mole of carbon reacts with one mole of Oxygen in this reaction to give One mole of Carbon dioxide.

So, 12 gm of carbon reacts with 32 gm of Oxygen in this reaction to give 44 gm of carbon dioxide.

15 gm of C $O_{2}$ was formed in this reaction

Oxygen used in this reaction = $\frac{15}{44}$ ×32 = 10.91 gm ,

Thus Oxygen is in sufficient quantity in the reaction.

Now,

Carbon that must be used = $\frac{15}{44}$ ×12 = 4.09 gm.

5 0

3 years ago