Molecular formula of ammonia

Answers

Answer 1

Answer: The answer is NH3
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What is the rock that has no exposure to chemical or mechanical weathering known as?

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Tthis is known as the Goldich Dissolution Serie

A 475mL sample of gas was collected at a temperature of -21.5 and a pressure of 756mmHg. Calculate the volume of a gas(in liters) if the conditions were altered to STP

Answers

The volume of gas under STP is 0.512 liters.

Explanation:

At STP (Standaed Temperature and Pressure)

T = 0°C

P = 1 atm = 760 mmHg

Given

P1 = 756 mmHg

T1 = -21.5°C = -21.5 + 273 = 251.5 K

V1 = 475 mL = 0.475 L

P2 = 760 mmHg

T1 = 0°C = 0 + 273 = 273 K

We know that

$(P1 * V1)/(T1) = (P2 * V2 )/(T2)\n\n(756 * 0.475)/(251.5) = (760 * V2)/(273)\n$

$V2 = (273 * 756 * 0.475)/(251.5 * 760) \nV2 = (98034.3)/(191140)$

V2 = 0.512 L

How many atoms are in 3.20 moles of carbon

Answers

Answer:

19.264× $10^(23)$ atoms are present in 3.2 moles of carbon.

Explanation:

It is known that one mole of each element is composed of Avagadro's number of atoms. This is same for all the elements in the periodic table.

So, as 1 mole of any element = Avagadro's number of atoms = 6.02× $10^(23)$ atoms

It is as simple as understanding a dozen of anything is equal to 12 pieces of that object.

As here the moles of carbon is given as 3.20 moles, the number of atoms in this mole can be determined as below.

1 mole of carbon = 6.02 × $10^(23)$ atoms

Then, 3.20 moles of carbon = 3.20 × 6.02 × $10^(23)$ atoms

Thus, 19.264× $10^(23)$ atoms are present in 3.2 moles of carbon.

What mineral property is illustrated by this photograph?

Answers

Hardness, lustre, and colour.

Explanation:

These Rocks shown in photographs are made of different types of minerals which have properties as follows:

●The color of the rock is grey, brown and yellow after it is ground into a powder its color is streak.

● The lustre of the rock tells how shiny the rocks are.

● Other properties include hardness, texture, shape, and size.

Can a compound have a molecule with a single atom?? Explain.

Answers

No, a molecule is made up of multiple atoms, so you cannot have a compound of a molecule with a single atom

No because a molecule is made of many atoms

What is the first element on the periodic table?

Answers

Hydrogen, H.

I hope this helps!

Hydrogen.
I hope this helps.

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