All categories

3 years ago

why is the law of conservation of mass important to understand when writing chemical formulas and chemical equations

Chemistry

1 answer:

Naddika [18.5K]3 years ago

4 0

Explanation:

The law of conservation of mass is important to understand when writing chemical equations because it is very useful in making chemical calculations on reactants and the products.

The law states that "the mass of products in chemical reactions is equal to the mass of the reactants".

The law shows that new atoms are not created in a reaction, bonds are just broken and rearranged and new compounds are formed.
Based on this premise, it is easy to track the amount of products that formed.
The law is also an indicator of how efficient a reaction can be.
Before a reaction starts, the law can be used to predict the amount and nature of products that will form.

Learn more:

Chemical laws brainly.com/question/5896850

#learnwithBrainly

You might be interested in

Determine the molecular formula for the compound with a molar mass of 46.08 g/mol and the following percent compostion:

kramer

Answer:

$\large\boxed{\large\boxed{CH_6N_2}}$

Explanation:

1. First determine the empirical formula.

a) Base: 100 g of compound

mass atomic mass number of moles

g g/mol mol

C 26.06 12.011 26.06/12.011 = 2.17

H 13.13 1.008 13.13/1.008 = 13.03

N 60.81 14.007 60.81/14.007 = 4.34

b) Divide every number of moles by the smallest number: 2.17

mass number of moles proportion

C 2.17/2.17 1

H 13.03/2.17 6

N 4.34/2.17 2

c) Empirical formula

$CH_6N_2$

d) Mass of the empirical formula

$1\times 12.011g/mol6+6\times 1.008g/mol+2\times 14.007g/mol=46.07g/mol$

2. Molecular formula

Since the mass of one unit of the empirical formula is equal to the molar mass of the compound, the molecular formula is the same as the empirical formula:

$CH_6N_2$

6 0

3 years ago

Asolution has a pH of 8. Which best describes the solution?

alekssr [168]

Answer:

a weak base

Explanation:

pH levels:

0-3 Strong Acid

4-6 Weak Acid

7 Neutral

8-10 Weak Base

11-14 Strong Base

6 0

3 years ago

Read 2 more answers

How many Joules of heat will be given off by 55.0g of water as it cools from 87.3°C to 25.0°C?

PSYCHO15rus [73]

Answer:

Q = -14322.77 J

Explanation:

Given data:

Mass of water = 55.0 g

Initial temperature = 87.3°C

Final temperature = 25.0 °C

Heat given off = ?

Solution:

Specific heat capacity:

It is the amount of heat required to raise the temperature of one gram of substance by one degree.

Specific heat capacity of water is 4.18 J/g.°C

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = 25.0 °C - 87.3°C

ΔT = - 62.3 °C

Q = 55.0 g×4.18 J/g.°C × - 62.3 °C

Q = -14322.77 J

5 0

3 years ago

Which sequence shows the different types of electromagnetic waves arranged in an increasing order of their frequency?

Elanso [62]

The answer is A)radio waves, micro waves, visible light, x-rays

8 0

3 years ago

Question 4

natka813 [3]

I can confirm that's the correct answer

5 0

2 years ago

why is the law of conservation of mass important to understand when writing chemical formulas and chemical equations​

why is the law of conservation of mass important to understand when writing chemical formulas and chemical equations