What is the number of moles in 42g of silicon?

How many moles are in silicon?

From the Periodic Table we find Si has a gram molecular weight of 28.1 g/mole. Therefore, the number of moles of Si here is 11.8g/28.1g/mol = 0.42 moles Si.

How many moles are in 79 grams of silicon?

4.68 mg of Silicon = 4.68 x 10-3 g of silicon moles of Silicon = Mass of Silicon / Atomic Mass g = 4.68×10−3/ 28.1 = 1.66×10-4 mol.

How many moles are there in 28.1 g of silicon?

The number of moles in 28.1 g of silicon is 1 moles.

Is 28g of silicon equal to 1 mole?

We know from Mole concept that 1 mole is 6.022×1023 of anything. This number is called Avogadro’s number. Also that 1 mole of Silicon weighs 28.0855 g.

What is the formula for moles to grams?

Moles to Grams Conversion Formula. In order to convert the moles of a substance to grams, you will need to multiply the mole value of the substance by its molar mass.

How many moles are in 1 kg of oxygen?

so,62.5 moles of oxygen have (6.022×10^23×62.5) molecules. Hence 1 kg of oxygen has (376.38×10^23) molecules.

How do you convert moles to mass?

Multiply the molecular weight by the number of moles for the substance. The molecular weight is the number of grams per mole for the substance and gives the conversion factor for moles to grams for that particular substance. So, one mole of water has a mass of 18.02 grams (1 mol H2O x 18.02 g/mol = 18.02 g).

THIS IS INTERESTING:  Best answer: Why does my mole pop out?

How do I calculate moles?

How to find moles?

  1. Measure the weight of your substance.
  2. Use a periodic table to find its atomic or molecular mass.
  3. Divide the weight by the atomic or molecular mass.
  4. Check your results with Omni Calculator.

How many moles are in 96 grams of oxygen?

Each molecule contains 2 atoms. 3 moles contain 3.612 * 10^24 atoms oxygen.