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ikadub [295]
3 years ago
9

What is it called when you apply science and mathematics to real life problems

Chemistry
1 answer:
Ghella [55]3 years ago
8 0

Answer:

I think S.T.E.M but i'm not 100% sure

Explanation:

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1. According to the equation, what mass of hydrogen fluoride is necessary to produce 2.3 g of sodium fluoride?
Vanyuwa [196]

Answer:

1.096g

Explanation:

You must know the atomic mass of Hydrogen, Fluorine, and Sodium before you can start:

Hydrogen: 1.008g/mol

Fluorine: 18.99g/mol

Sodium: 22.98g/mol

Next, find the composition percentage of NaF

22.98 + 18.99 = 41.97

Fluorine is 18.99/41.97 =45.25%

Sodium is 100-45.25 = 54.75%

Ultimately we want to know about HF so find how much F is in 2.3g: 2.3 * 0.4525 = 1.041g

Find comp. percentage of HF

18.99+1.008 = 19.998; H/total F/total

Hydrogen 5.041%

Fluorine 94.959%

Laws of conservation of say we have 1.041g of fluorine in our HF. We know 1.041 is 94.959% of the mass of HF so do some simple math to find the remaining: 1.041/0.94959 = 1.096g

4 0
3 years ago
A galvanic cell consists of a Al3 /Al half-cell and a standard hydrogen electrode. If the Al3 /Al half-cell standard cell functi
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Answer:

Explanation:

here is your answer:

3 0
3 years ago
Which does not affect global wind belts
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Answer:

b

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its local

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Which isotope of lead has a double magic number? (1) Pb-206 (2) Pb-207 (3) Pb-208 (4) Pb-209
antiseptic1488 [7]
It is Pb-208, answer 3.
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The most common compound on earth is cellulose because it has enough energy to be the next source for biofuels. 
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