2 years ago

Tính số nguyên tử oxi

Chemistry

1 answer:

kow [346]2 years ago

8 0

Answer:

please what do you mean

Explanation:

explain please

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ioda

A) CuBr2

b) Al(NO3)3

c) Ca3(PO4)2

d) Fe2S3

e) HgCl2

f) Mg(C2H3O2)2

7 0

2 years ago

What is the molar mass of Ca(NO3)2?

gregori [183]

Answer:

C.164.1g/mol

Explanation:

40+14×2+16×6

164

7 0

3 years ago

Ethanol, C2H6O, is most often blended with gasoline - usually as a 10 percent mix - to create a fuel called gasohol. Ethanol is

ch4aika [34]

Answer:

4054 kcal of heat is released during complete combustion of 354 g of octane.

Explanation:

Heat of combustion of 1 mol of octane is $1.308\times 10^{3}$ kcal

Molar mass of octane = 114.23 g/mol

We know, no. of moles = (mass)/(molar mass)

So, $1.308\times 10^{3}$ kcal of heat is released during complete combustion of 114.23 g of octane.

So, amount of heat is released during complete combustion of 354 g of octane = $(\frac{1.308\times 10^{3}}{114.23})\times 354$ kcal = 4054 kcal

Hence 4054 kcal of heat is released during complete combustion of 354 g of octane.

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3 years ago

Enyzmes change the _______ of a reaction by making the reaction go ______

11111nata11111 [884]

Rate, fast :Maybe these are the answers.

6 0

3 years ago

Fission involves the _________________ of an atom into smaller particles, while fusion occurs when smaller particles ___________

Norma-Jean [14]

Answer:

1. Splitting

2. Combine

Explanation:

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2 years ago