3 years ago

A chemical equation is shown:

Chemistry

1 answer:

ExtremeBDS [4]3 years ago

8 0

The answer is A because you have to balance the equation first then answer.

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How many grams of sodium chloride are required to make a 1.0 L solution with a concentration of 3.5 M? 205 grams 0.205 grams 3.5

Firlakuza [10]

<span>A 1 molar solution is the molecular weight in grams in 1 litre of water, so a 3.5 molar solution would be 58.44g multiplied by 3.5, which is 204.54g in 1L.</span>

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Ethane is a very combustible gas. Write a balanced equation for the complete oxidation reaction that occurs when ethane (C2H6) b

umka2103 [35]

Answer: $2C_2H_6+7O_2\rightarrow 4CO_2+6H_2O$

Explanation:

Combustion is a chemical reaction in which hydrocarbons are burnt in the presence of oxygen to give carbon dioxide and water.

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products formed must be equal to the mass of reactants taken. In order to get the same mass on both sides, the atoms of each element must be balanced on both sides of the chemical equation.

The balanced combustion reaction is,:

$2C_2H_6+7O_2\rightarrow 4CO_2+6H_2O$

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4 years ago

What procedure could a student use to examine an intensive property of a rectangular block of wood

photoshop1234 [79]

An intensive property does not change when you take away some of the sample. The procedures that a student could use to examine the intensive property of a rectangular block of wood are the hardness, color, density and molecular weight.

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What is the formula for phosphorus trihydride

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PH3
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3 years ago

How do plants affect the amount of carbon in Earth’s atmosphere?

kaheart [24]

Answer:

Explanation:

plants decrease the levels of carbon dioxide in the atmosphere due to the process of photosynthesis

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