3 years ago

What’s the difference between heterogeneous and homogeneous mixtures?

1 answer:

5 0

Answer:

Mixtures can be either homogeneous or heterogeneous. A mixture in which its constituents are distributed uniformly is called homogeneous mixture, such as salt in water. A mixture in which its constituents are not distributed uniformly is called heterogeneous mixture, such as sand in water.

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What is the mass in grams of BaCl2 that is needed to prepare 200 mL of a 0.500 M solution

DENIUS [597]

Answer:

= 20.82 g of BaCl2

Explanation:

Given,

Volume = 200 mL

Molarity = 0.500 M

Therefore;

Moles = molarity × volume

= 0.2 L × 0.5 M

= 0.1 mole

But; molar mass of BaCl2 is 208.236 g/mole

Therefore; 0.1 mole of BaCl2 will be equivalent to;

= 208.236 g/mol x 0.1 mol

= 20.82 g

Therefore, the mass of BaCl2 in grams required is 20.82 g

6 0

3 years ago

When water droplets in a cloud combine, become too heavy, and fall to the ground as snow, sleet or hail, we are experincing what

Elza [17]

That would be known as precipitation.

8 0

4 years ago

Anyone know! Please help asap ty

DiKsa [7]

Answer:

An earthquake happens by the child being born from fat mama

Explanation:

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3 years ago

How many molecules are in 3.8 mols of copper?

ioda

Answer:

Hi there!

The correct answer is 2.29 x $10^{24}$ molecules

Explanation:

To convert from the moles to molecules:

1 mole = 6.022 x 10²³ molecules

so basically you multiply 3.8 by 6.022 x 10²³

and you get: 2.29 x $10^{24}$

5 0

4 years ago

State the observation made when hydrogen chloride gas is passed over ammonia gas

Zarrin [17]

Answer:

dry

Explanation:

it will dry the hydrogen chloride to the ammonia

6 0

3 years ago