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2 years ago

How many atoms are in 10g of Al

Chemistry

1 answer:

pochemuha2 years ago

8 0

Answer:

The correct answer is

Explanation:

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2 KClO_2 produces 2 KCl+ 3O_2 when heated. If this reaction produces 82.8 g of KCl how many grams of O2 were produced?

Ad libitum [116K]

Answer:

37.046 grams of oxygen gas were produced.

Explanation:

$2KClO_2\rightarrow 2KCl+ 3O_2$

Moles of potassium chlorite = $\frac{82.2 g}{106.5 g/mol}=0.7718 mol$

According to reaction 2 moles of potassium chlorite gives 3 moles of oxygen gas.

Then 0.7718 moles of potassium chlorite will give:

$\frac{3}{2}\times 0.7718 mol=1.1577 mol$ of oxygen gas.

Mass of 1.1577 moles of oxygen gas:

1.1577 mol × 32 g/mol = 37.046 g

37.046 grams of oxygen gas were produced.

4 0

3 years ago

Which situation would cause a red for an observer on the red planet?

fenix001 [56]

When a light source moves away for an observer.

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2 years ago

Predict whether each of the following substances would be more soluble in water (polar solvent) or in a hydrocarbon such as hept

vlada-n [284]

Answer:

Vegetable oil will dissolve in heptane

Isopropyl alcohol will dissolve in water

Potassium Bromide will dissolve in water

Explanation:

In chemistry, like dissolves like. This implies that polar substances will dissolve in polar solvents and nonpolar substances will dissolve in nonpolar solvents. This is so because, dissolution of a solute in a solvent involves adequate intermolecular interaction between solute and solvent which isn't possible between a polar and a nonpolar substance.

5 0

3 years ago

Which of the following molecules is polar?

alexandr1967 [171]

Answer

CH3Cl is polar amoungst the choices

5 0

2 years ago

When discussing discordant and harmonious sound waves, which statement is false?

notka56 [123]

When discussing discordant and harmonious sound waves, the statement tat is false is : if the original waves combine to form irregular displacement of air, the sound will be discordant. The fact is, irregular displacement of air does not guarantee sound discordance

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3 0

3 years ago