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Chemistry

2 answers:

Xelga [282]3 years ago

7 0

Answer:

When fuels are incompletely burnt, they release carbon monoxide gas into the atmosphere. This gas is very dangerous as it is poisonous in nature

Explanation:

Nataly [62]3 years ago

7 0

Answer:

:they release carbon monoxide gas into the atmosphere. This gas is very dangerous as it is poisonous in nature

Explanation

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Is turning something anhydrous endo or exothermic?

seraphim [82]

It is endothermic because heat energy is supplied to make the water of crystallization evaporate and make the compound anhydrous.

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3 years ago

How many grams of oxygen is needed to completely react with 9.30 moles of aluminum

Orlov [11]

Balanced chemical equation:

* moles of oxygen

4 Al + 3 O2 = 2 Al2O3

4 moles Al -------------- 3 moles O2
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moles O2 = 9.30 * 3 / 4

moles O2 = 27.9 / 4 => 6.975 moles of O2

Therefore:

Molar mass O2 = 31.9988 g/mol

n = m / mm

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3 years ago

Read 2 more answers

What is the theoretical yield of Li3N in grams when 12.8 g of Li is heated with 34.9 g of N2?

Olenka [21]

Answer:- 21.4 grams of $Li_3N$ are formed.

Solution:- The balanced equation is:

$6Li+N_2\rightarrow 2Li_3N$

From this equation, lithium and nitrogen reacts in 6:1 mol ratio. Limiting reactant gives the theoretical yield of the product. We will calculate the grams of the product for the given grams of both the reactants and see which one of them gives the limited amount of the product. This limited amount of the product will be the theoretical yield.

The molar mass of Li is 6.94 gram per mol and for $N_2$ It is 28.02 gram per mol. The molar mass of $Li_3N$ is 34.83 gram per mol. The calculations for the grams of the product for given grams of both the reactants are shown below: