Where do molecules humans need come from

Chemistry

1 answer:

grigory [225]2 years ago

6 0

Answer:

manila hahaha

i dont now

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Which of the following do you expect to have soil with the highest fertility

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3 years ago

Why are significant figures rules for calculations more important in science than in math class?

inysia [295]

Answer:

The importance of significant figures

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Explanation:

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3 years ago

An 11.75 g sample of a common hydrate of cobalt(ii) chloride is heated. after heating, 9.25 g of anhydrous cobalt chloride remai

Irina-Kira [14]

Hydrated salts are when salt crystals have water molecules bound. Anhydrous salts are when the water has been removed.
mass of water removed = hydrated salt - anhydrate salt
= 11.75 g - 9.25 g = 2.50 g
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number of cobalt (II) chloride moles = 9.25 g / 130 g/mol = 0.0712 mol
ratio of water moles to CoCl₂ moles - 0.139 mol / 0.0712 mol = 1.95
rounded off 2 moles of water for every 1 mol of CoCl₂
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3 years ago

What is an electrolyte?

Mashcka [7]

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3 years ago

When the pressure that a gas exerts on a sealed container changes from 1100 bar to 75.5 bar, the temperature changes from k to 2

Serjik [45]

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P/T = k
where P - pressure , T - temperature and k - constant
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parameters for the first instance are on the left side and parameters for the second instance are on the right side of the equation
substituting the values in the equation
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T = 4342 K
initial temperature was 4342 K

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3 years ago