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Luden [163]
3 years ago
6

Pls help with my fianals​

Chemistry
1 answer:
andrew-mc [135]3 years ago
3 0

Answer:

A and B

Explanation:

It is phosphorus element having 3 energy levels and 5 electrons on the third level

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The equation for the combustion of CH4 (the main component of natural gas) is
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Heat produced =  -13588.956 kJ

<h3>Further explanation</h3>

Given

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271 g of CH4

Required

Heat produced

Solution

mol of 271 g CH₄ (MW=16 g/mol0

mol = mass : MW

mol = 271 : 16

mol = 16.9375

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2 years ago
What is a promblem based on charles' law?
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Answer:

You will never know the exact volume with charles law

Explanation:

Doubling the temperature of gas doubles its volume, so long as the pressure and quantity of the gas are unchanged.

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If 5.3 g of gallium reactions with 5.3 g of oxygen according to the following reaction, how many grams of gallium oxide can be p
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Answer:

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How many molecules of chlorine are needed to react with 56.Og of iron to form Iron (III) chloride (FeCl3)?

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2 years ago
The compound trimethylamine, (CH3)3N, is a weak base when dissolved in water. Write the Kb expression for the weak base equilibr
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Answer:

Kb = [OH⁻] . [C₃H₉NH⁺] / [ C₃H₉N ]

Explanation:

The equation for the reaction of trimethylamine when it is dissolved in water is:

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1 mol of trimethylamine catches a proton from the water in order to produce trimethylamonium.

It is a base, because it give OH⁻ to the medium

Expression for Kb (Molar concentration)

Kb = [OH⁻] . [C₃H₉NH⁺] / [ C₃H₉N ]

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