Question

calculate the molarity of 12.4g of KCL in 289.2ml of solution

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Answer 1

Answer:

Molarity = weight/ Gram Molecular weight × 1000 / volume in ml

M = 12.4/74.5 × 1000 /289.2

M = 0.167 × 3.46

M = 0.57

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Answer 2

Answer:

hey there let me help you my friend

Explanation:

according to the formula of molarity

MOLARITY = NO OF MOLES / VOLUME OF SOLUTION IN LITRES

SO HERE NO OF MOLES  OF KCL

MOLES = MOLECULAR MASS /  MOLAR MASS

MOLES =  12.4 / 74.55

so moles = 0.166

now  moles / volume

so  0.166 / 0.2892(converted in litres) = 0.57M  

so your answer will be 0.57M.