Calculate the amount (in moles) of (a) Cu2+ ions in 3.00 g of CuBr2

Question

Question

Calculate the amount (in moles) of (a) Cu²⁺ ions in 3.00 g of CuBr₂

science chemistry

Answer 1

Answer #1

Molar mass of CuBr2 = 63.546+ 2×79.904=223.35 g/mol.

This means 223.35 g CuBr2 = 1 mol CuBr2 ,

then 1 g of CuBr2 = (1/223.35) mol CuBr2

So 3.00 g CuBr2 = (1/223.35)×3.00 mol CuBr2 = 0.0134 mol CuBr2

In 1 CuBr2 there is one Cu2+ ion.

Thus moles of Cu2+ ions in 3.00 g CuBr2 is 0.0134 mol.

Comment in case of any doubt.

Answer 2

Similar Homework Help Questions

Calculate the number of moles and the mass of negative ions present in 15.67 g of...

Calculate the number of moles and the mass of negative ions present in 15.67 g of magnesium nitrate, Mg(NO3)2.
1. Calculate the moles of sodium oxide needed to have 40.1 g of sodium ions.

1. Calculate the moles of sodium oxide needed to have 40.1 g of sodium ions.
Calculate the amount of copper generated from the electrolysis of molten CuBr2 salt from 8.8 hours...

Calculate the amount of copper generated from the electrolysis of molten CuBr2 salt from 8.8 hours with a current of 4.50 Amps. Faraday's constant is 96,500C per mole of electrons. Calculate the mass in grams (do not include the unit, just the numerical answer)

Calculate the mass of 3.00 moles of CF2Cl2.

Calculate the mass of 3.00 moles of CF2Cl2.
1. How many Na^+ ions contain 5.43 g of Na3PO4? 2. Calculate the number of moles...

1. How many Na^+ ions contain 5.43 g of Na3PO4? 2. Calculate the number of moles of the species indicated in 333 mg of Na2B4O2. 10H2O.
3. Calculate the amount of solute, in moles, grams or milliliters, needed to prepare the following...

3. Calculate the amount of solute, in moles, grams or milliliters, needed to prepare the following solutions Show all the step by step solution: a. 1.00 L of a 3.00 M NaCl solution (moles of solute) b. 2.00 L of a 1.50 M NaOH solution (grams of solute) c. Milliliters of 1.50 M NaCl solution to obtain 4.78 g of NaCl

Calculate the mole fraction of total ions in an aqueous solution prepared by dissolving 0.400 moles...

Calculate the mole fraction of total ions in an aqueous solution prepared by dissolving 0.400 moles of MgCl2 in 850.0 g of water.
5. Calculate the number of moles of NO3 ions in 30.5 moles of Pb(NO3)2.

5. Calculate the number of moles of NO3 ions in 30.5 moles of Pb(NO3)2.
How many moles of aluminum ions, chlorite ions, and oxygen atoms are present in 50.0 g...

How many moles of aluminum ions, chlorite ions, and oxygen atoms are present in 50.0 g of aluminum chlorite?

Calculate the amount, in moles, of (a) 647 g of Ba(OH2 (b) 16.3 g of sulfur...

Calculate the amount, in moles, of (a) 647 g of Ba(OH2 (b) 16.3 g of sulfur trioxide, (c) 35.6 g of nickel(ID chloride heptahydrate, (d) 218 mg ethyl mercaptan, CH,CH2SH, and (e) 3.32 × 10" kg of iron(11) sulfide.