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Anastaziya [24]
3 years ago
7

How do you find the atoms of nitrogen in this substance (NH4)2CO3?

Chemistry
1 answer:
Katen [24]3 years ago
3 0
6.022*10^23 is the answer
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Both equations I and II are balanced, but equation I is the correct way to write the balanced equation.
ElenaW [278]
I don’t get the question. is there a worksheet?
5 0
3 years ago
Suppose that the root-mean-square velocity vrms of water molecules (molecular mass is equal to 18.0 g/mol) in a flame is found t
Zolol [24]

Answer:

T=954.41\ K

Explanation:

The expression for the root mean square speed is:

C_{rms}=\sqrt {\dfrac {3RT}{M}}

R is Gas constant having value = 8.314 J / K mol  

M is the molar mass of gas

Molar mass of water vapor = 18.0 g/mol  = 0.018 kg/mol

Temperature = ?

C_{rms}=1150  m/s

1150=\sqrt{\frac{3\times 8.314\times T}{0.018}}

1322500=\frac{24.942T}{0.018}

T=954.41\ K

4 0
3 years ago
Correct answer. 9. The mass number of an element is the number of? ​
Elis [28]

Answer:

The mass number is defined as the total number of protons and neutrons in an atom. The number of neutrons = mass number − atomic number.

4 0
3 years ago
Do any of the elements have similar properties? ​
Marysya12 [62]

Hello! Charchar here!

Answer:

I don't know what the elements are soo

The elements in the first column of the Periodic Table (other than hydrogen) are known as Group 1A metals, or alkali metals. When you compare the chemical properties of these elements (lithium, sodium, potassium, rubidium, cesium, and francium), what you'll notice is that they are all remarkably similar.

Explanation:

Hope this helped!

Have a nice day!

6 0
3 years ago
(3 Points)
prisoha [69]
Your answer is B. radio waves have shorter wavelenghts than microwaves.
Have a great day
5 0
3 years ago
Read 2 more answers
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