All categories

3 years ago

A cube with a mass of 250.0 g has sides measuring 5.00 cm each. What is the density of this cube in grams per cubic centimeter?

Chemistry

1 answer:

stiks02 [169]3 years ago

5 0

The density of the cube in grams per cubic centimeter = D = 2 gram / cm³

Explanation:

The Volume Of the Cube is V = a³

Its is given that the cube has sides measuring 5 cm each side.

V = ( 5 )³

= 5cm 5cm 5cm

V = 125 cm³

The Density Formula, Density= Mass / Volume.

Given that this cube has a mass of 250 grams.

to calculate density

D = ρ = m / V

= 250 / 125

= 2

D = 2 gram / cm³

You might be interested in

How many moles are in 43.9 L of oxygen

Ede4ka [16]

Answer: 2 mol

Explanation:

- According to the ideal gas law, One mole of an ideal gas at STP (standard temperature and normal pressure) occupies 22.4 liters.

- Using cross multiplication,

1 mol of (O2) → 22.4 L

? → 43.9 L

Therefore, the number of moles of oxygen in 43.9 L = (43.9 × 1)/ 22.4 = 1.96 mol≈ 2 mol..

3 0

3 years ago

Particle Mass (g) Atomic mass Electrical charge (C) Relative

KATRIN_1 [288]

Answer:

explaination:

final answer thoughts:

conclusion:

8 0

3 years ago

Calculate the mole fraction of the ionic species kcl in the solution.

sp2606 [1]

The question is incomplete, here is the complete question:

Calculate the mole fraction of the ionic species KCl in the solution A solution was prepared by dissolving 43.0 g of KCl in 225 g of water.

Answer: The mole fraction of KCl in the solution is 0.044

Explanation:

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$ .....(1)

For water:

Given mass of water = 225 g

Molar mass of water = 18 g/mol

Putting values in equation 1, we get:

$\text{Moles of water}=\frac{225g}{18g/mol}=12.5mol$

For KCl:

Given mass of KCl = 43 g

Molar mass of KCl = 74.55 g/mol

Putting values in equation 1, we get:

$\text{Moles of KCl}=\frac{43g}{74.55g/mol}=0.577mol$

Mole fraction of a substance is given by:

$\chi_A=\frac{n_A}{n_A+n_B}$

For KCl:

Moles of KCl = 0.577 moles

Total moles = [0.577 + 12.5] = 13.077 moles

Putting values in above equation, we get:

$\chi_{(KCl)}=\frac{0.577}{13.077}=0.044$

Hence, the mole fraction of KCl in the solution is 0.044

8 0

3 years ago

This is an example of what process ?

disa [49]

Answer is natural selection

6 0

3 years ago

1a. What type of bonds are formed when atoms share electrons unequally?

Ksivusya [100]

Answer:

Polar covalent bond, Water, and the last one a friend answered it already: brainly.com/question/7154480

Explanation:

7 0

3 years ago