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How many molecules are in 15.8 moles of Cu with work shown?
To find the number of molecules in 15.8 moles of copper (Cu), we can use Avogadro's number, which states that one mole of any substance contains approximately (6.022 \times 10^{23}) entities (atoms, molecules, etc.). Thus, the calculation is: [ \text{Number of atoms} = 15.8 , \text{moles} \times 6.022 \times 10^{23} , \text{atoms/mole} \approx 9.51 \times 10^{24} , \text{atoms} ] Therefore, there are approximately (9.51 \times 10^{24}) atoms in 15.8 moles of Cu.
How many grams are in moles of Li2O show work?
The molar mass of Li2O is 29,88 g (the sum of atomic weights of 2Li and 1O).
How many atoms of oxygen are in 3.33 grams of magnesium hydroxide?
first work out how many moles of Mg(OH)2 you have. n = m /M = 3.33 / 58 = 0.0574 mol Then from this work out how many mol of O you have. there are two oxygens in the formula so you have 0.0574 x 2 mol of O = 0.1148 mol 1 mol = 6.023x 1023 particles. So 6.023 x 10 23 /1 x 0.1148 = 6.92 x 10 22
Please show work How many moles would there be in 300 ml of of a 1.5 M solution?
To find the number of moles, use the formula: moles = Molarity (M) x Volume (L). First, convert 300 ml to liters by dividing by 1000: 300 ml / 1000 = 0.3 L. Then, calculate moles = 1.5 M x 0.3 L = 0.45 moles. Therefore, there would be 0.45 moles in 300 ml of a 1.5 M solution.
Please show work How many moles would there be in 115 ml of a 0.652 M solution?
To find the number of moles in the solution, first convert the volume provided to liters (115 mL = 0.115 L). Then, multiply the volume in liters by the molarity of the solution: 0.115 L x 0.652 mol/L = 0.075 moles. So, there would be 0.075 moles in 115 mL of a 0.652 M solution.
How many grams are in moles of Li2O show work?
The molar mass of Li2O is 29,88 g (the sum of atomic weights of 2Li and 1O).
Why do chemists use moles in their calculations and measurements?
Chemists use moles in their calculations and measurements because it allows them to work with a consistent unit of measurement for atoms and molecules, making it easier to compare and analyze different substances.
How many atoms of oxygen are in 3.33 grams of magnesium hydroxide?
first work out how many moles of Mg(OH)2 you have. n = m /M = 3.33 / 58 = 0.0574 mol Then from this work out how many mol of O you have. there are two oxygens in the formula so you have 0.0574 x 2 mol of O = 0.1148 mol 1 mol = 6.023x 1023 particles. So 6.023 x 10 23 /1 x 0.1148 = 6.92 x 10 22
How many atoms are present in H2SO4?
The way to work this is out is to first find the mass of one mole of H2SO4 .(98.08 grams). 10 grams is therefore 10/98.08 moles- = 0.102 moles of sulfuric acidEach mole of sulfuric acid contains gram atom of sulfur so we have .102 moles sulfur..if you want the actual count of atoms multiply by avogadros number which is6.0221415 × 1023 (most teachers will accept using 6.022 instead of the longer version)
Please show work How many moles would there be in 300 ml of of a 1.5 M solution?
To find the number of moles, use the formula: moles = Molarity (M) x Volume (L). First, convert 300 ml to liters by dividing by 1000: 300 ml / 1000 = 0.3 L. Then, calculate moles = 1.5 M x 0.3 L = 0.45 moles. Therefore, there would be 0.45 moles in 300 ml of a 1.5 M solution.
Please show work How many moles would there be in 115 ml of a 0.652 M solution?
To find the number of moles in the solution, first convert the volume provided to liters (115 mL = 0.115 L). Then, multiply the volume in liters by the molarity of the solution: 0.115 L x 0.652 mol/L = 0.075 moles. So, there would be 0.075 moles in 115 mL of a 0.652 M solution.
Why do we want to use the concept of moles in chemistry?
The concept of moles in chemistry is used to easily measure and compare the amounts of different substances. It allows us to work with large numbers of atoms or molecules in a more manageable way, making calculations and experiments more efficient and accurate.
How many atoms are in 4Na plus O2 2Na2O show your work?
There are a total of 8 atoms in the chemical equation 4Na + O2 → 2Na2O. This can be calculated by adding up the number of atoms on both sides of the equation: 4 sodium atoms from 4Na, 2 oxygen atoms from O2, and 2 oxygen atoms from 2Na2O. Thus, the total number of atoms is 4 + 2 + 2 = 8 atoms.
How many moles of AlCl3 are produced from 0.30 mole of Cl2 Show the work?
Balanced equation: 2Al + 3Cl2 -> 2AlCl3For every 3 moles of Cl2, 2 moles of AlCl3 is produced (Using the numbers in front of the compounds)Now set up a proportion: 3/2 = 0.30/?Cross Multiply: (2 X 0.30) / 3 = 0.20.2 moles of AlCl3 will be produced.
Why do scientists use moles in chemical calculations and measurements?
Scientists use moles in chemical calculations and measurements because it allows them to work with a consistent unit of measurement for atoms and molecules. This helps in accurately determining the amount of substances involved in chemical reactions and making comparisons between different substances.
Does wart cream work for moles?
no it dosent
How many atoms in 19.3 grams of gold on a sheet that is 0.00010?
To calculate the number of atoms in 19.3 grams of gold, you need to first determine the number of moles of gold. Then, you can use Avogadro's number (6.022 x 10^23) to find the number of atoms. Given that the sheet is only 0.00010 cm thick and the density of gold is 19.3 g/cm^3, you can determine the area of the sheet and then calculate the number of atoms.
