High School

Dear beloved readers, welcome to our website! We hope your visit here brings you valuable insights and meaningful inspiration. Thank you for taking the time to stop by and explore the content we've prepared for you.
------------------------------------------------ How many total moles of ions are released when the following samples dissolve completely in water? Ensure that each of your answer entries has the correct number of significant figures.

**Part 1 of 2:**
66.9 g of [tex]Ba(OH)_2 \cdot 8H_2O[/tex] = _____ mol

**Part 2 of 2:**
[tex]6.89 \times 10^{-1}[/tex] g of [tex]NiBr_2 \cdot 3H_2O[/tex] = _____ mol

Answer :

Final answer:

The total moles of ions released are 0.212 mol for Ba(OH)2 · 8H2O and 2.91 × 10^(-3) mol for NiBr2 · 3H2O.

Explanation:

Part 1: To calculate the number of moles of Ba(OH)2 · 8H2O, we need to divide the given mass by the molar mass. The molar mass of Ba(OH)2 · 8H2O is 315.46 g/mol. Therefore, the number of moles is 66.9 g / 315.46 g/mol = 0.212 mol.

Part 2: To calculate the number of moles of NiBr2 · 3H2O, we divide the given mass by the molar mass. The molar mass of NiBr2 · 3H2O is 236.51 g/mol. Therefore, the number of moles is 6.89 × 10^(-1) g / 236.51 g/mol = 2.91 × 10^(-3) mol.

Learn more about total moles of ions here:

https://brainly.com/question/32547507

#SPJ11

Other Questions