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2 years ago

Independent variable in your own words

Chemistry

1 answer:

Ronch [10]2 years ago

6 0

Explanation:

An independent variable is defines as the variable that is changed or controlled in a scientific experiment.

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You have a gas with a density of 4.8 grams per Liter and a molar mass of 75.3 grams per mole. How many liters of gas do you have

Andre45 [30]

d = √((x1 - x2)2 + (y1 - y2)2)

( -2 , 5 ) ( 12 , -1 )

↑ ↑ ↑ ↑

x1 y1 x2 y2

d = √((-2 - 12)2 + (5 - (-1))2) = √((-14)2 + 62) = √(196 + 36) = √232 = 2√58 ≈ 15.23

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3 years ago

A covalent compound that shares two pairs of electrons. What is it?

Nitella [24]

The two oxygen atoms share two pairs of electrons, so two covalent bonds hold the oxygen molecule together

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3 years ago

In the presence of excess oxygen, methane gas burns in a constant-pressure system to yield carbon dioxide and water: CH4 (g) 2O2

Degger [83]

Answer:

The energy released will be -94.56 kJ or -94.6 kJ.

Explanation:

The molar mass of methane is 16g/mol

The given reaction is:

$CH_{4}(g) + 2O_{2} (g) --> CO_{2} (g)+ 2H_{2}O(l)$

the enthalpy of reaction is given as ΔH = -890.0 kJ

This means that when one mole of methane undergoes combustion it gives this much of energy.

Now as given that the amount of methane combusted = 1.70g

The energy released will be:

$=\frac{energy released by one moleXgiven mass}{molarmass} =\frac{-890X1.7}{16}= -94.56 kJ$

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3 years ago

Who discovered the nucleus?

Mama L [17]

Ernest Rutherford i believe

5 0

3 years ago

Read 2 more answers

What is formed when atoms of elements combine?

Eva8 [605]

Answer:

compounds , because they're combined

7 0

3 years ago