Answer:
4 elements for C7H5(NO2)3
Answer : The number of moles present in ammonia is, 70.459 moles.
Solution : Given,
Mass of ammonia = 
Molar mass of ammonia = 17.031 g/mole
Formula used :


Therefore, the number of moles present in ammonia is, 70.459 moles.
Answer:
10-10 above the 0 is positive and the ones below is - (negitive)
Explanation:
The answer is:
1. 500g stainless steel cup
<span>2. 500g aluminum cup </span>
<span>3. 750g aluminum cup</span>
I think the answer is A but i'm not sure