cunni05881
cunni05881 cunni05881
  • 01-10-2020
  • Chemistry
contestada

I will give Brainliest ...What mass of KBr is present in 75.0 mL of 0.250 M KBr solution?

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mickymike92
mickymike92 mickymike92
  • 06-10-2020

Answer:

Mass of KBr present = 2.23 g

Explanation:

Number of moles of KBr present in 75.0 ml of 0.250 M solution of KBr is first determined

From the formula: molarity = number of moles/ volume (L);

Number of moles = molarity * volume (L)

Volume of solution in Litres = 75/1000 = 0.075

Number of mole = 0.250 * 0075 = 0.01875 moles

Mass = number of moles * molar mass

Molar mass of KBr = 119 g/mol

Mass = 0.01875 moles * 119 g/mol = 2.23 g

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