Answer:
17.5moles
Explanation:
The number of moles in a substance can be calculated by using the formula;
Number of moles (n) = mass (m) ÷ molar mass (MM)
According to this question, mass of ammonia (NH3) = 297g
Molar Mass of NH3 = 14 + 1(3)
= 17g/mol
n = 297/17
n = 17.47
Number of moles of NH3 = 17.5moles
More vegetables, more fruits, easier to use.
Answer: the wave is reflected
explaination: in which, reflected stately happens when a wave strikes an object
Answer:
0.0365
Explanation:
Three significant figures after the decimal include all numbers except the zeros before other numbers.
For example 0.000003431232 to three significant figures would be 0.00000343. However if the numbers are before the decimal, the zeros are included, for example 19828300 to three significant numbers would be 19800000.
