The number of grams present in 0.54 moles of calcium is; 22 g
We are given;
Number of moles; n = 0.54 moles
Now, Molar mass of calcium is;
M = 40.1 g
Formula for number of moles is;
n = m/M
Where;
n is number of moles
m is mass in grams
M is molar mass
Thus;
0.54 = m/40.1
m = 40.1 × 0.54
m = 21.654 g
Approximately m = 22 g
Read more at; brainly.com/question/5397233
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Step-by-step explanation:
The question is asking to calculate the average speed of the mail truck if it travels 82 miles in just 412 hours, base on that, the possible answer would be that the average speed of the truck is 0.2 miles per hour. I hope you are satisfied with my answer and feel free to ask for more
well...
15 x 20 = 300
300+85 = 385
you can get 20 watches for $385
Answer:
$528
Step-by-step explanation:
If cost is proportional to order quantity, the cost for 17+5 = 22 cases of cups will be 22/17 times the cost for 17 cases:
(22/17)($408) = $528
