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drek231 [11]
3 years ago
14

Can someone help me with this?

Chemistry
1 answer:
Arada [10]3 years ago
4 0

1. F

2. E

3. G

4. A

5. C

6. D

7. B

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The nation on average uses around 10 Million tons of salt per year to de-ice roads. How many kilograms of salt is this? (please
Westkost [7]
45359237 kilograms :))))))))))
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3 years ago
Aspirin (C9H8O4) is synthesized by reacting salicylic acid (C7H6O3) with acetic anhydride (C4H6O3) according to the reaction: C7
Lunna [17]

Answer:

7.39\times 10^{3}g of acetic anhydride is needed

Explanation:

According to balanced equation, 1 mol of salicylic acid completely reacts with 1 mol of acetic anhydride

Number of moles = (mass)/(molar mass)

Molar mass of acetic anhydride = 102.09 g/mol

Molar mass of salicylic acid = 138.121 g/mol

So, 1.00\times 10^{4}g of salicylic acid = \frac{1.00\times 10^{4}}{138.121}moles of salicylic acid

Hence, \frac{1.00\times 10^{4}}{138.121}moles of salicylic acid reacts completely with \frac{1.00\times 10^{4}}{138.121}moles of acetic anhydride.

So, mass of acetic anhydride needed = \frac{1.00\times 10^{4}}{138.121}\times 102.09g = 7.39\times 10^{3}g

7 0
3 years ago
Which statement is true about Hf and HF?
AfilCa [17]
3 bc Hf is an element hafnium and HF is compound hydrogen flouride
5 0
4 years ago
A balloon is filled to a volume of 1.50 L with 3.00 mol of gas at 25 C. with pressure and temperature held constant, what will b
bixtya [17]

Answer:

3.2L

Explanation:

PV=nRT

since pressure and temperature are held constant we have V=nR

R is a constant also,

Thus; \frac{v1}{n1}=\frac{v2}{n2}

v1=1.5L  , n1=3mol, n2=1.4mol

\frac{1.5}{3}=\frac{v2}{1.4}

v2=\frac{1.5}{3}*1.4

v2=3.2L

7 0
3 years ago
What is special about nitrogen ,and what is its main function in the atmosphere
Bogdan [553]
Nitrogen in an inert gas and most abundant in the nitrogen, it balances the proportion to other gases, and keep the atmosphere less dense

Hope this helps!
4 0
3 years ago
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