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fiasKO [112]
2 years ago
11

Hii I need a tutor for chemistry

Chemistry
1 answer:
kap26 [50]2 years ago
3 0

Answer:

I had a tutor for chemistry but I think I don't have the number now.

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What is the total mass of a mixture of 3.50x10^22 formula units na2so4, 0.500 mol h2o, and 7.23 g agcl?
Crazy boy [7]
Answer is: mass of the mixture is 24,47 g.
1) N(Na₂SO₄) = 3,5·10²².
n(Na₂SO₄) = 3,5·10²² ÷ 6·10²³ 1/mol.
n(Na₂SO₄) = 0,058 mol.
m(Na₂SO₄) = 0,058 mol · 142 g/mol.
m(Na₂SO₄) = 8,24 g.
2) n(H₂O) = 0,500 mol.
m(H₂O) = 0,5 mol · 18 g/mol.
m(H₂O) = 9 g.
3) m(total) = 8,24 g + 9 g + 7,23 g.
m(total) = 24,47 g.
n - amount of substance.
5 0
3 years ago
Which is the symbol for the element that contains six electrons in each of its neutral atoms?
Harlamova29_29 [7]

the symbol for the elements that contains six rlectrons in each of its neutrual atoms are number of 6

8 0
3 years ago
An example of an organic sedimentary rock used as fuel would be?
Naya [18.7K]
Coal
Coal is a sedimentary rock that is made from mostly plant debris. This debris is usually formed in a swampy environment and is usually mined and used for fuel! Hope this helps!
6 0
3 years ago
When measuring the volume of an object you are finding the?
marta [7]

Answer:

C. Amount of 3 dimensional space the object occupies

Explanation:

Single dimension is a laminar

Amount of 2 dimension is area

Amount of 4 dimension is negligible

.

7 0
3 years ago
Balance the combustion eqation; __C5H + __O2 ---> __CO2+__H2O
stira [4]
This equation C5H + O2 ---> CO2 + H2O has a mistake.

C5H is wrong. You missed the subscript of H.

I will do it for you assuming some subscript to show you the procedure, but you have to use the right equation to get the right balanced equation.

Assuming the tha combustion equation is C5H12 + O2 ---> CO2 + H2O

First you need to  balance C, so you put a 5 before CO2 and get

C5H12 + O2 ---> 5CO2 + H2O

Now you count the hydrogens: 12 on the left and 2 on the right. So put a 6 before H2O and get:

C5H12 + O2 ---> 5CO2 + 6H2O

Now count the oxygens: 2 on the left and 16 on the right, so put an 8 on before O2:

=> C5H12 + 8O2 ---> 5CO2 + 6H2O.

You can verify that the equation is balanced
8 0
2 years ago
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