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3 years ago

Metric conversions please help.

Chemistry

2 answers:

oksian1 [2.3K]3 years ago

5 0

Answer:

What is Question explain

german3 years ago

4 0

Huh can’t help if I can’t see

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How many grams are in 3.40 x 10^24 molecules of CH4

Arturiano [62]

Answer:

90.37 g

Explanation:

From Avogadro Number,

1 mole of every substance contains a particle number of 6.02×10²³

From the question,

1 mole of CH₄ contains 6.02×10²³ molecules.

But,

1 mole of CH₄ has a mass of 16 g

Therefore,

16 g of CH₄ contains 6.02×10²³ molecules

Then,

Y g will contain 3.4×10²⁴ molecules

Solve for Y

Y = (16× 3.4×10²⁴)/(6.02×10²³)

Y = 90.37 g

6 0

3 years ago

Deltas are formed at the mouth of a river. They are formed by ______ of sediments, soil, sand, gravel, which is a constructive p

Mazyrski [523]

Deltas are formed by deposits of sediments, soil, sand, and gravel.

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3 years ago

What are tissues made up of?

Aleks [24]

Answer should be:

Cells

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3 years ago

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Two types of electro magnetic radiation that you can see with a telescope

agasfer [191]

You tellme i have the same anwser
botch # bit

6 0

3 years ago

A sample of 25.0 mL of 0.120 M Ca(OH)2(aq) is titrated with 0.150 M HCl(aq). What volume of HCl(aq) is needed to completely neut

stiv31 [10]

Answer:

$V_{HCl}=48.0 mL$

Explanation:

Hello!

In this case, since the reaction between calcium hydroxide and hydrochloric acid shows a 2:1 mole ratio between them:

$2HCl+Ca(OH)_2\rightarrow CaCl_2+2H_2O$

We need to use the following mole ratio:

$2n_{Ca(OH)_2}=n_{HCl}$

That can be written in volumes and concentrations:

$2M_{Ca(OH)_2}V_{Ca(OH)_2}=M_{HCl}V_{HCl}$

Thus, we solve for the volume of HCl as it is the unknown:

$V_{HCl}=\frac{2M_{Ca(OH)_2}V_{Ca(OH)_2}}{M_{HCl}}$

Therefore, we plug in to obtain:

$V_{HCl}=\frac{2*0.120M*25.0mL}{0.150M} \\\\V_{HCl}=48.0 mL$

Best regards!

3 0

3 years ago