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Alexeev081 [22]
4 years ago
5

How does newtons law explain why a book on a desk does not move

Chemistry
1 answer:
MatroZZZ [7]4 years ago
5 0

There is not a force acting upon the book or the desk so nothing is moving it.


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What is the density of the object if it weigh 389.27g and has volume of 832.92cm3
ExtremeBDS [4]

The density of the object is 0.467 36 g/cm³.

The mass of the object is 389.27 g.

The volume of the object is 832.92 cm³.

Density = mass/volume = 389.27 g/832.92 cm³ = 0.467 36 g/cm³

7 0
3 years ago
A neutral atom has an atomic mass of 7 and atomic number of 3. Which of the following state is true? *
Rasek [7]
A. The atom has 3 protons, 3 electrons, and 4 neutrons.
6 0
3 years ago
Which of the following questions is a scientific question?
insens350 [35]

Explanation:

where's the question, please?

4 0
3 years ago
what is an empirical formulaWhat is the percent composition by mass of nitrogen in (NH4)2CO3 (gram-formula mass = 96.0 g/mol)?
Margarita [4]

Answer:

Percentage composition = 14.583%

Explanation:

In chemistry, the emprical formular of a compound is the simplest formular a compound can have. It shows the simplest ratio in which the elements are combined in the compound.

Percentage composition by mass of Nitrogen

Nitrogen = 14g/mol

In one mole of the compound;

Mass of Nitrogen = 1 mol * 14g/mol = 14g

Mass of compound = 1 mol * 96.0 g/mol = 96

Percentage composition of Nitrogen = (Mass of Nitrogen /  Mass of compound) * 100

percentage composition = 14/96   * 100

Percentage composition = 0.14583 * 100

Percentage composition = 14.583%

3 0
3 years ago
A scientist studies the growth of plants in a laboratory. Which experimental procedure would provide evidence that
dusya [7]

The experimental procedure would provide evidence that plants need

nitrogen to grow is by

  • Identical plants are placed in two air-tight containers with sufficient exposure to sunlight.
  • One container has nitrogen gas, and the other has room air. The scientist measures plant growth

It is necessary to use identical plants during the experiment as plants have

different rates of nitrogen absorption from the soil. It should also be done in

air-tight containers called terrariums to prevent loss or contamination of the

gases with other elements/compounds.

The identical plants containing nitrogen and room air should both be

measured for the growth difference between them.

Read more on brainly.com/question/972291

7 0
3 years ago
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