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Leni [432]
3 years ago
9

What is the universe made of?

Chemistry
2 answers:
brilliants [131]3 years ago
7 0
Methane, nitrogen, dark matter, and radiation.
Marrrta [24]3 years ago
4 0
The universe is thought to be made 3 things: normal matter, dark matter, and dark energy.
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Do you think a battery system would OR wouldn’t have energy? If so, give me evidence/observations as to why you think so.
Basile [38]

Answer:

Yes it would

Explanation: Well it kinda depend on the voltage and how the battery has been in use or based on the condition

6 0
3 years ago
For an aqueous solution of sodium chloride (NaCl) .Determine the molarity of 3.45L of a solution that contains 145g of sodium
worty [1.4K]
Molar mass NaCl = 58.44 g/mol

number of moles:

mass NaCl / molar mass

145 / 58.44 => 2.4811 moles of NaCl

Volume = 3.45 L

Therefore :

M = moles / volume in liters:

M = 2.4811 / 3.45

M = 0.719 mol/L⁻¹

hope this helps!
6 0
3 years ago
4) What mass of hydrogen is formed when 2.00g of magnesium<br> Mg + H2SO4–&gt;H2SO4
DochEvi [55]

Answer:

0.16g

Explanation:

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7 0
3 years ago
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11111nata11111 [884]

Answer:

Answer down below

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