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tekilochka [14]
3 years ago
6

How many moles of carbon are in 7.87x10^7

Chemistry
1 answer:
Kobotan [32]3 years ago
8 0
75 if I'm not wrong
You might be interested in
Automobile airbags inflate due to the formation of nitrogen gas from the chemical reaction 2NaN3(s)⟶3N2(g)+2Na(s) Identify the n
Vera_Pavlovna [14]

<u>First part:</u>

2 atoms of Na

6 atoms of N

<u>Second part:</u>

2 atoms of N

2 atoms of Na

Why?

We are given the chemical reaction, so, we can extract the number of atoms for both reactants and products.

We are given the chemical equation:

2NaN_{3}=3N_{2}+2Na

We can rewrite it as follow:

2(NaN_{3})=3N_{2}+2Na

From the reactants, we have:

2(NaN_{3})

2Na=2atoms\\2N_{3}=2*3=6atoms

From the products we have:

3N_{2}+2Na

3N_{2}=3*2=6atoms

2Na=2atoms

Hence, we have that:

There are <u>6 atoms of N in the reactants</u> and <u>6 atoms of N in the products.</u>

and

There are <u>2 atoms of Na in the reactants</u> and<u> </u><u>2 atoms of Na in the products</u> since we have a balanced equation.

Have a nice day!

6 0
3 years ago
What is the total mass of three gold bars that weigh 5543 mg, 23.45 mg, and 697.4 mg?
GrogVix [38]
The total mass is the sum of the masses.
It is
5543 + 23.45 + 697.4 mg =  6263.85 mg

Answer:  6263.85 mg
6 0
3 years ago
What would you use a barometer for? Why?
xeze [42]
A barometer is used to measure the pressure in the air, Like if there was a Storm coming the barometer can forecast (Predict) The weather in the air
8 0
3 years ago
If you have an element with 46 protons and 44 electrons, the net charge of the element is
finlep [7]

The answer is b because 46-44 = positive 2.

8 0
4 years ago
A container of hydrogen at 172 kPa was decreased to 85.0 kPa producing a new volume of 3L. What was the original volume?
Aneli [31]

Answer:

<h2>The answer is 1.48 L</h2>

Explanation:

In order to find the original volume we use the same for Boyle's law which is

P_1V_1 = P_2V_2

where

P1 is the initial pressure

P2 is the final pressure

V1 is the initial volume

V2 is the final volume

Since we are finding the original volume

V_1 =  \frac{P_2V_2}{P_1}  \\

From the question

P1 = 172 kPa = 172000 Pa

P2 = 85 kPa = 85000 Pa

V2 = 3 L

We have

V_1 =  \frac{85000 \times 3}{172000}  =  \frac{255000}{172000}  =  \frac{255}{172}  \\  = 1.482558139...

We have the final answer as

<h3>1.48 L</h3>

Hope this helps you

4 0
3 years ago
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