Ask question

Ask question

All categories

3 years ago

8

What is conserved during all chemical reactions?

1 answer:

Stels [109]3 years ago

8 0

Answer:

In a chemical reaction the total mass of all the substances taking part in the reaction remains the same. ... The law of conservation of mass states that the total mass of substances taking part in a chemical reaction is conserved during the reaction.

Explanation:

You might be interested in

1. Two boys balanced steady in a sea-saw game

anygoal [31]

Mutual

They are balanced steadily which means they’re at the same point

4 0

2 years ago

Read 2 more answers

How many grams of CO2 are in 2.1 mol of the compound? a) 21.0g c) 66.0g

Lilit [14]

1 mole CO2 = 44.0096 grams CO2

<span>2.1 mol CO2 x (44.0096 grams CO2/1 mole CO2) = 92.4 grams CO2</span>

8 0

3 years ago

A certain compound of bromine and fluorine is used to make UF6, which is an important chemical in the processing and reprocessin

Aleksandr [31]

Answer: The empirical formula is $BrF_3$

Explanation:

If percentage are given then we are taking total mass is 100 grams.

So, the mass of each element is equal to the percentage given.

Mass of Br= 58.37 g

Mass of F = (100-58.37) = 41.63 g

Step 1 : convert given masses into moles.

Moles of Br= $\frac{\text{ given mass of Br}}{\text{ molar mass of Br}}= \frac{58.37g}{80g/mole}=0.73moles$

Moles of F = $\frac{\text{ given mass of H}}{\text{ molar mass of H}}= \frac{41.63g}{19g/mole}=2.2moles$

Step 2 : For the mole ratio, divide each value of moles by the smallest number of moles calculated.

For Br = $\frac{0.73}{0.73}=1$

For F = $\frac{2.2}{0.7}=3$

The ratio of Br: F= 1 : 3

Hence the empirical formula is $BrF_3$

8 0

2 years ago

Which statement is true about a catalyst?

mixas84 [53]

Answer:

Option B: It remains unused during the reaction

Explanation:

Just took the test and got it right.

8 0

3 years ago

Which word describes the water stored below Earth's surface?

DiKsa [7]

Answer:

I believe it is ground water

5 0

3 years ago

Read 2 more answers