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4 years ago

What does the solvent do in a solution?

Chemistry

2 answers:

tiny-mole [99]4 years ago

6 0

Answer: The solvent is the substance that dissolves another in a solution

Explanation:

IrinaK [193]4 years ago

3 0

A solvent is dissolved in a solution. For example, salt water is a solution of a solute (water) and a solvent (salt.)

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Ammonia is formed according to the reaction below. A chemist mixes 21 grams of nitrogen gas and 18 grams of hydrogen gas in a 2.

Rama09 [41]

Answer : The mass of hydrogen gas consumed will be, 4.5 grams

Explanation : Given,

Mass of $N_2$ = 21 g

Mass of $H_2$ = 18 g

Molar mass of $N_2$ = 28 g/mole

Molar mass of $H_2$ = 2 g/mole

First we have to calculate the moles of $N_2$ and $H_2$ .

$\text{Moles of }N_2=\frac{\text{Mass of }N_2}{\text{Molar mass of }N_2}=\frac{21g}{28g/mole}=0.75moles$

$\text{Moles of }H_2=\frac{\text{Mass of }H_2}{\text{Molar mass of }H_2}=\frac{18g}{2g/mole}=9moles$

Now we have to calculate the limiting and excess reagent.

The balanced chemical reaction is,

$N_2(g)+3H_2(g)\rightarrow 2NH_3(g)$

From the given balanced reaction, we conclude that

As, 1 mole of $N_2$ react with 3 moles of $H_2$

So, 0.75 moles of $N_2$ react with $3\times 0.75=2.25$ moles of $H_2$

From this we conclude that, $H_2$ is an excess reagent because the given moles are greater than the required moles and $N_2$ is a limiting reagent because it limits the formation of product.

The moles of hydrogen gas consumed = 2.25 mole

Now we have to calculate the mass of hydrogen gas consumed.

$\text{Mass of }H_2=\text{Moles of }H_2\times \text{Molar mass of }H_2$

$\text{Mass of }H_2=(2.25mole)\times (2g/mole)=4.5g$

Therefore, the mass of hydrogen gas consumed will be, 4.5 grams

5 0

4 years ago

How would the following solid substances be classified? The choices are metallic, ionic, or molecular. C6H12O6

Bumek [7]

Answer:

C₆H₁₂O₆ (glucose)

A molecular substance.

Explanation:

C₆H₁₂O₆ does not dissociate. It is not a ionic type.

There is no metal in the compound, it is not a metallic type.

Glucose is an organic molecule, a type of carbohidrate, the most common from the monosaccharides type.

4 0

4 years ago

numbers represented by the following prefi xes: (a) mega-, (b) kilo-, (c) deci-, (d) centi-, (e) milli-, (f) micro-, (g) nano-,

Dahasolnce [82]

Explanation:

mega=10raised to the power 6

kilo=10 raised to the power 3

centi = 10 raised to the power negative 2

Milli = 10 raised to the power negative 3

nano = 10 raised to the power negative 9

pico= 10 raised to the power negative 12

micro = 10 raised to the power negative 6

5 0

3 years ago

In a chemical reaction, [_____] are the substances present after the reaction.

worty [1.4K]

Answer:

Products

Explanation:

5 0

3 years ago

Aquaculture is the practice of farming sea organisms as a renewable food resource. Ture or false?

melamori03 [73]

True. Aquaculture is basically the rearing of aquatic animals for food

4 0

4 years ago

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