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alex41 [277]
3 years ago
9

COMPLETE How many grams of CaCl2 are in 250 mL of 2.0 M CaCl2?

Chemistry
1 answer:
saul85 [17]3 years ago
6 0

Answer:

There are 55, 49 g of CaCl2

Explanation:

We calculate the weight of 1 mol of CaCl2:

Weight CaCl2=Weight Ca + 2x(Weight Cl)= 40,08g+ 2x 35, 45g=110,98 g/mol

1000ml-----2 mol of CaCl2

250ml------x= (250 ml x 2 mol of CaCl2)/1000ml= 0,5 mol of CaCl2

1mol -----110,98g

0,5mol ---x= (0,5molx110,98g)/1 mol= <em>55,49 g</em>

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2 years ago
What is the coefficient of Ca(OH)2 in the equation Ca(OH)2 + HNO3 → Ca(NO3)2 + H2O when balanced using the smallest possible coe
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Now the equationis balanced.

Ca(OH)2 + 2HNO3 = Ca(NO3)2 + 2H2O

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