All categories

3 years ago

List the qualities of the atmosphere that makes it safe to live on this planet

1 answer:

8 0

One quality is the gravity, the gravity is important because we won't be flying into space. Another quality is that there is food and water provided for survival

You might be interested in

What is the total number of hydrogen atoms in a molecule of heptyne?

Step2247 [10]

Answer:

Explanation:

alkyne formula is CnH2n-2

heptyne = 7

6 0

3 years ago

Imagine a 15kg block moving with a speed of 20m/s. Calculate the kinetic energy of this block.

SSSSS [86.1K]

The kinetic energy formula is;

$KE=\frac{m.v^2}{2}$

The variable $m$ represents the mass. Its unit is kilogram. We are informed that the mass of the object is $15kg$ . The variable $v$ represents the linear velocity. Its unit is meter per second. We are informed that the linear velocity of the object is $20m/s$ . Let's find the kinetic energy of the object by substituting these values in the formula.

$KE=\frac{15kg.(20m/s)^2}{2}$
$2.KE=15kg.400m^2/s^2$
$2.KE=(6000)kgm^2/s^2$
$KE=(3000)kgm^2/s^2=3000J$

5 0

1 year ago

A decrease in pressure has the greatest effect on a solution that contains.. ?

Naddika [18.5K]

<h3><u>Answer;</u></h3>

A gas in a liquid

<h3><u>Explanation;</u></h3>

Pressure affects the solubility of gases. According to Henry's law, the solubility of a gas in a liquid is proportional to the partial pressure of the gas above the liquid at a given temperature,
Therefore; For the solubility of gases in liquids, as pressure increases, solubility increases. Hence pressure will have a effect on a solution with a gas in liquid.

3 0

4 years ago

2. To what volume will you have to dilute 20.0 ml of a 8 M HCl solution to make a 0.35 M

GrogVix [38]

Answer:

You need to dilute 8 M HCl to 0.35 M to make 457 mL.

Explanation:

Use the equation M₁V₁=M₂V₂

Convert the mL to L : 20 mL= 0.02 L

8 M x 0.02 L = 0.35 M x V₂

V₂ = 0.4571429 L = 457 mL

3 0

3 years ago

Is sublimation exothermic or endothermic

Masja [62]

Answer:

endormic

Explanation:

It occurs at a temperature and pressures below a substance's triple point on its phase diagram, which corresponds to the lowest pressure at which the substance can exist as a liquid

5 0

3 years ago