All categories

3 years ago

What is the mass of 2.9 moles of calcium? Explain please

Chemistry

1 answer:

Alik [6]3 years ago

4 0

Answer:

116 g

Explanation:

From the question given above, the following data were obtained:

Number of mole of calcium = 2.9 moles

Mass of calcium =.?

The mole and mass of a substance are related according to the following formula:

Mole = mass / molar mass

With the above formula, we can obtain the mass of calcium. This can be obtained as follow:

Number of mole of calcium = 2.9 moles

Molar mass of calcium = 40 g/mol

Mass of calcium =.?

Mole = mass / molar mass

2.9 = mass of calcium / 40

Cross multiply

Mass of calcium = 2.9 × 40

Mass of calcium = 116 g

Therefore, the mass of 2.9 moles of calcium is 116 g.

You might be interested in

If each image represents one mole of the substance pictured, which contains the greatest

Bezzdna [24]

I think it’s B) Molecules
I searched it up

6 0

3 years ago

A student mixed a small amount of iron filings and sulphur powder in a dish. He could not

Temka [501]

Answer:

$\huge \boxed{\mathrm{Carbon \ disulphide}}$

Explanation:

Carbon disulphide is the liquid that can be used to separate iron fillings and sulphur powder.

When carbon disulphide is poured into the dish, the sulphur powder gets easily dissolved in the carbon disulfide. The iron fillings are left to settle on the bottom of the dish.

The iron fillings can get seperated through filtration. When the mixture of sulphur powder and carbon disulphide gets completely evaporated, the sulphur powder is left over.

7 0

3 years ago

Which of the following is an asteroid? A: A shooting star B: A big chunk of space rock C: A small comet D: A small meteor

lora16 [44]

Answer:

B: A big chunk of space rock

Explanation:

asteroids are basically known as minor planets.

whereas shooting star is some dust burning while entering earths atmosphere.

on the other hand comet is some icy material consisting of gases.

and meteor is a very very small rocky or metallic body.

7 0

4 years ago

1. Baking soda and vinegar combined *

Alina [70]

Answer:

dont know

Explanation:

4 0

3 years ago

In what block, group, and period on the periodic table can the atom with a 1s22s22p63s23p64s23d104p7 ground-state electron confi

Yanka [14]

No the maximum number of electrons for "4p" is 6 so there can't be a 4p7

7 0

3 years ago

Read 2 more answers