N (H2O) = m/M
m (H2O) = 1.4 kg = 1400g
M (H2O) = 2 x 1 + 16 = 18g/mol
n (H2O) = 1400/18 = 77.8mol
Answer:
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Explanation:
The percent composition is defined by mass percent. So the calculation is through the atomic mass. The mass for H is 1, Cl is 35.5, O is 16. So the answer is B.
Hello there.
Question: <span>Compare the following words. Which word best describes a scientific model?
replica
analogy
theory
technology
Answer: It would be replica.
Hope This Helps You!
Good Luck Studying ^-^</span>
Answer:
I am not sure, but I think the answer is 150units
Explanation:
cause area of a trapezoid is A=1/2(a+b)h