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olga55 [171]
3 years ago
8

How does the Big Bang theory explain why there is a lot of hydrogen and helium in the universe?

Chemistry
1 answer:
N76 [4]3 years ago
7 0

Answer:

when the explosion happened the matter fussed into elements as the electrons portions Nd notrons were compresed into the elements beacuase hydrogen has 1 nutron proton and electron surronding its core

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How many mL of 3.0M HCl are needed to make 300.0 mL of a 0.10M HCl?
nalin [4]

Answer:

V₁  = 10 mL

Explanation:

Given data:

Initial volume of HCl = ?

Initial molarity = 3.0 M

Final molarity = 0.10 M

Final volume = 300.0 mL

Solution:

Formula:

M₁V₁  =  M₂V₂

M₁ = Initial molarity

V₁  =  Initial volume of HCl

M₂ =Final molarity

V₂ = Final volume

Now we will put the values.

3.0 M ×V₁  =  0.10 M×300.0 mL

3.0 M ×V₁  = 30 M.mL

V₁  = 30 M.mL /3.0 M

V₁  = 10 mL

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3 years ago
What is the ending of the electron configuration of each element in group 4?
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3 years ago
What happens to the heat energy that leaves the milk?
bekas [8.4K]

Answer:

it gets cold or warm

Explanation:

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Should you place materials that have toxic fumes by an open window?
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No. You shouldn't place materials that have toxic fumes because it can get in people's lunges through breathing.
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CH4 + 2O2 ---> CO2 + 2H2O
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