How many molecules are there in 180g of H2O?

X =180/18 =10 moles.

How many molecules are present in 9g of H20?

= 3. 011 x 10^23.

How many molecules of water are there in 54g of H2O Class 9?

You are left with 1.8×1024 water molecules (rounded to two sig figs).

How many molecules of water are there in 18 gg of water?

18 g of water contains 1 mol of water molecules. or 18 g of water contains 6.022 x 10^23 water molecules.

How many molecules are in 18 grams of water?

– We can say that 18 grams of water means same as 1 mole of water , and in this NA Avogadro number of water molecules are present , which means 6.02×1023 molecules.

How many molecules are present in 17g of ammonia?

This means that 17g of ammonia is one mole of ammonia. The number of molecules in a single mole of any compound is given by Avoadro’s constant, which is 6.023×10^23. There would be 6.023×10^23 molecules of ammonia in 17 grams of the substance.

How many moles of water are there in 54g of H2O?

Explanation: The molar mass of water is 18 g/mol. The mass of water is 54 g. The number of moles of water =18g/mol54g=3mol.

How many water molecules are present in 25.0 grams of H2O?

Here we have 25.0 g/(18.0g/mole) = 1.39 moles water (3 sig figs). Multiply 1.39 moles times the definition of a mole to arrive at the actual number of water molecules: 1.39 (moles water) * 6.02 x 1023 molecules water/(mole water) = 8.36 x 1023 molecules water.

How many molecules are in 36G of H2O?

We’ll use the following relationship: Using the moles of H 2O that were just obtained, we can use Avogrado’s number to perform dimensional analysis to cancel out units of mol to end up with molecules: 2.00mol × 6.02 ×1023molecules 1mol = 1.204 × 1024molecules Thus, 36g of water is equivalent to 1.2 × 1024molecules

How many atoms are there in 2 moles of H2O?

1 mole of H2O molecule = 18 grams. But, 2 moles of H2O molecule contains 2 moles of H2 molecule and 1 mole of O2 molecule. But, 2 moles of H2 molecule contain 4 moles of H atoms and 1 mole of O2 molecule contains 2 moles of O atom. = 36.138 X 10²³ atoms.

How many atoms are there in 36 grams of water?

Now we divide 36g by 18g/mol. The grams cancel out, and we are left with 2 moles of water in 36 g of water. We then multiply 2 by a mole, which is 6.022*10^23, and get 1.2044*10^24. Finally, to find the total number of atoms, we multiply 1.2044*10^24 by 3, because there are 3 atoms in each water molecule. The final answer is ~3.613*10^24 atoms.

What is the Avogadro constant of 36 mg of hydrogen atoms?

E.G 1 gram of hydrogen atoms which have the mass number of 1 will have the Avogadro Constant of atoms. Doing the math, one would find a mole of water has the mass of 18g. 18 mg of water would hence be 6.02x 10^20. Multiplying that by 2 to get molecules of 36mg becomes 1.204×10^21.