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Ivan
3 years ago
10

I need help TnT

Chemistry
2 answers:
Slav-nsk [51]3 years ago
7 0

Explanation:

I don't think human beings will ever extinct

cause they are smart and adaptive

hodyreva [135]3 years ago
5 0
<h3>in MY OPINION</h3>

Q1. I don't know the future but I would say that Humans will not become extinct because of diseases and pandemics.

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What happens to metal when rapidly heated then cooled
Anna [14]

Answer:

It is called tempering. Its tensile strength may reduce but it will become more rigid and hard to break compared to the original metal.

Explanation:

( Source : Quora )

4 0
3 years ago
Which part of the Periodic Table of the elements is used to identify valence electrons? *
irina1246 [14]
The number of valence electrons of an element can be determined by the periodic table group (vertical column) in which the element is categorized
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2 years ago
The kinetic molecular theory describes the behavior of gases in terms of particles in?
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What process is used to find technological solutions.
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5 0
3 years ago
If the percent yield for the following reaction is 75.0%, and 25.0 g of NO₂ are consumed in the reaction, how many grams of nitr
victus00 [196]

Answer:

17.1195 grams of nitric acid are produced.

Explanation:

3NO_2+H_2O\rightarrow 2HNO_3+NO

Moles of nitrogen dioxide :

\frac{25.0 g}{56 g/mol}=0.5434 mol

According to reaction 3 moles of nitrogen dioxides gives 2 moles of nitric acid.

Then 0.5434 moles of nitrogen dioxides will give:

\frac{2}{3}\times 0.5434 mol=0.3623 mol of nitric acid.

Mass of 0.3623 moles of nitric acid :

0.3623 mol\times 63 g/mol=22.8260 g

Theoretical yield = 22.8260 g

Experimental yield = ?

\%Yield=\frac{\text{Experimental yield}}{\text{theoretical yield}}\times 100

75\%=\frac{\text{Experimental yield}}{22.8260 g}

Experimental yield of nitric acid = 17.1195 g

7 0
3 years ago
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