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professor190 [17]
3 years ago
15

Define a force.......

Chemistry
2 answers:
FinnZ [79.3K]3 years ago
6 0

Answer:

Gravitational Force.

Gravitation is the agent that gives weight to objects with mass and causes them to fall on the ground when dropped.

grin007 [14]3 years ago
5 0

Answer:

A force is the strength or energy as an attribute of physical action or movement.

Explanation:

In smaller words, a force is a form of energy caused from a push or a pull on an object. A force happens when two objects interact with each other. For example, when you throw a ball you are using force.

Hopefully this helps im sorry if i got it wrong im kinda dumb... XD

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লবণ ও বালুর মিশ্রন পরীক্ষা<br>​
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Explanation:

3 0
3 years ago
Chemistry balance equations C2H +O2=CO2+H2O​
son4ous [18]

Invalid equation.

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7 0
2 years ago
Most fertilizers consist of nitrogen-containing compounds such as NH3,CO(NH2)2,NH4NO3, and (NH4)2SO4. Plants use the nitrogen co
Y_Kistochka [10]

Answer: 1. NH_3=82.4\%

2.  CO(NH_2)_2=46.7\%

3. . NH_4NO_3=35\%

4. (NH_4)_2SO_4=21.2\%

NH_3 has highest nitrogen content.

Explanation:

To calculate the mass percent of element in a given compound, we use the formula:

\text{Mass percent of nitrogen}=\frac{\text{Mass of nitrogen}}{\text{Molar mass of nitrogen compound}}\times 100

1. NH_3

\text{Mass percent of nitrogen}=\frac{\text{Mass of nitrogen}}{\text{Mass of} NH_3}=\frac{14}{17}\times 100=82.4\%

2. CO(NH_2)_2

\text{Mass percent of nitrogen}=\frac{\text{Mass of nitrogen}}{\text{Mass of} CO(NH_2)_2}=\frac{14\times 2}{12\times 1+16\times 1+2\times 14+4\times 1}\times 100=\frac{28}{60}\times 100=46.7\%

3. NH_4NO_3

\text{Mass percent of nitrogen}=\frac{\text{Mass of nitrogen}}{\text{Mass of} NH_4NO_3}=\frac{14\times 2}{14\times 2+16\times 3+4\times 1}\times 100=\frac{28}{80}\times 100=35\%

4. (NH_4)_2SO_4

\text{Mass percent of nitrogen}=\frac{\text{Mass of nitrogen}}{\text{Mass of}(NH_4)_2SO_4}=\frac{14\times 2}{14\times 2+16\times 4+32\times 1+8\times 1}\times 100=\frac{28}{132}\times 100=21.2\%

Thus NH_3 has highest nitrogen content  of 82.4%.

8 0
3 years ago
What kinds of anthropogenic activities produce acid rain?
gladu [14]

Answer:

Rotting vegetation and erupting volcanoes release some chemicals that can cause acid rain, but most acid rain is a product of human activities. The biggest sources are coal-burning power plants, factories, and automobiles.

5 0
3 years ago
Read 2 more answers
Really need help:<br> A dry mixture of water soluble KNO3 and sand could be seperated by _______?
Tanzania [10]

Answer:

A

Explanation:

When you add the water, KNO3 will be in solution, but sand is not soluble.

So, we can use filtration.

8 0
3 years ago
Read 2 more answers
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