# Hacktivateed

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## How many moles is 4HCl?

4HCl – Physico-chemical Properties

Molecular Formula C12H22Cl4N4O2
Molar Mass 396.141 g/mol
Melting Point 280℃
Boling Point 481.7°C at 760 mmHg
Flash Point 282.7°C

### How do you find the number of molecules?

Explanation: Determine the mass of the substance, and its molar mass. Divide the given mass by its molar mass to get moles, then multiply times 6.022×1023molecules1mol .

How many elements are in c8h10n402?

One molecule of caffeine contains 8 atoms of carbon, 10 atoms of hydrogen, 2 atoms of oxygen, 4 atoms of nitrogen.

How many moles are there in 73g HCl?

Best Answer (a) No. of molecules in 73 g HCl = 6.023 x1023 x 73/36.5(mol.

## How many moles of HCl are there in 45g?

of moles =1.23 moles.

### What is molecule number?

To calculate the number of molecules in a substance The total number of atoms/molecules in a sample can be calculated by multiplying the number of moles with the Avogadro constant. This formula can be written as: Number of Atoms or Molecules = (Number of Moles)*(6.022*1023)

How many atoms are there?

According to the US Department of Energy’s Jefferson Lab, the answer is: 133,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000. That answer comes from an estimation of the number of atoms in each of Earth’s elements, like Iron, Oxygen, Silicon, Magnesium, Sulfur … etc.

What kind of reaction is MnO2 4hci → MnCl2 2H2O Cl2?

redox reaction
Hint: The given reaction is an example of a redox reaction. In these types of chemical reactions, the oxidation state of atoms or molecules gets changed.

## How many is a mol?

Chemists generally use the mole as the unit for the number of atoms or molecules of a material. One mole (abbreviated mol) is equal to 6.022×1023 molecular entities (Avogadro’s number), and each element has a different molar mass depending on the weight of 6.022×1023 of its atoms (1 mole).

### Is C8H10N4O2 a element or compound?

1,3,7-Trimethylpurine-2,6-dione
Caffeine/IUPAC ID