All categories

2 years ago

PLEASE HELP WILL MARK YOU AS BRAINLEST

Chemistry

1 answer:

kozerog [31]2 years ago

7 0

It is a very large seamount and island created by hot-spot volcanism

You might be interested in

A tetraphenyl phosphonium chloride (TPPCl) powder (FW=342.39) is 94.0 percent pure. How many grams are needed to prepare 0.45 L

slega [8]

Answer:

5.41 g

Explanation:

Considering:

$Molarity=\frac{Moles\ of\ solute}{Volume\ of\ the\ solution}$

Or,

$Moles =Molarity \times {Volume\ of\ the\ solution}$

Given :

For tetraphenyl phosphonium chloride :

Molarity = 33.0 mM = 0.033 M (As, 1 mM = 0.001 M)

Volume = 0.45 L

Thus, moles of tetraphenyl phosphonium chloride :

$Moles=0.033 \times {0.45}\ moles$

Moles of TPPCl = 0.01485 moles

Molar mass of TPPCl = 342.39 g/mol

The formula for the calculation of moles is shown below:

$moles = \frac{Mass\ taken}{Molar\ mass}$

Thus,

$0.01485\ g= \frac{Mass}{342.39\ g/mol}$

Mass of TPPCl = 5.0845 g

Also,

TPPCl is 94.0 % pure.

It means that 94.0 g is present in 100 g of powder

5.0845 g is present in 5.41 g of the powder.

<u>Answer - 5.41 g</u>

5 0

3 years ago

I need you to solve for me plzzzzzz

Sergeu [11.5K]

Answer:

.0556 L

Explanation:

First, convert the 1.35 M to 1.35 mol/L in order for the units to correctly cancel out.

Then, multiply (0.0725 moles Na2CO3/1) times (L/ 1.35 mol).

Finally, the answer will be .0556 L.

<h3 />

3 0

2 years ago

Displaement of ammonia from its salt

Dvinal [7]

Ill say <span>calcium hydroxide but hope this helps :)</span>

5 0

3 years ago

isotopes of an element have the same number of protons but a different number of neutrons below u will see the nucleus of four d

dexar [7]

What is your question? Its not clear

3 0

3 years ago

Changes to Earth's Surface

Ad libitum [116K]

Answer: As the glacier receded, the sediments in the stream built up to result in the formation.

Explanation: study island

4 0

2 years ago