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Katyanochek1 [597]
2 years ago
8

Will mark brainliest if correct

Chemistry
1 answer:
Sergeeva-Olga [200]2 years ago
4 0

Answer:

a and d

Explanation:

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00000044m<br> 300000km/s <br> Both in scientific notation
cupoosta [38]

Answer:

4.4 × 10^-7

3 × 10^5

Explanation:

scmack me wit dat brainliest

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2 years ago
Which is a positively charged particle in an atom’s nucleus?
ahrayia [7]

Answer:

A proton is a positively charge particle in an atom..

4 0
3 years ago
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Nonmetal halogen family atmoic mass 35
Anettt [7]

chlorine has the atomic mass of 35.5 and is a non metal in the halogen family

5 0
2 years ago
Pure magnesium metal is often found as ribbons and can easily burn in the presence of oxygen. when 2.59 g of magnesium ribbon bu
stepan [7]
Burning Mg in the air and reacting with O2 forming a white powder of MnO

So the equation is going to be:
Mn + O2 ⇒ MnO (this equation is not conserved)

to make it equilibrium:
1- First we should put 2Mno to equal the O2 on both sides.
So it will be:
Mg + O2⇒ 2MgO
2- Second we should put 2Mn to equal the Mn on both sides.
2Mg + O2⇒ 2MgO (this equation is conserved)
After putting the physical states the final equilibrium equation is going to be:
                        Δ
2Mg(s) + O2(g)⇒ 2MgO(s)

 

4 0
3 years ago
What is the mole ratio of NH3 to N2?
Ksenya-84 [330]
To answer this question a balanced chemical equation is necessary. The correct equation is: N2 + 3H2 = 2NH3
From this equation, one mole of nitrogen react with 3 moles of hydrogen to give 2 moles of ammonia.
Therefore, the mole ratio of NH3 to N2 is 2:1
8 0
2 years ago
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