Answer:
a) 300K
b) 373K
c) 273K
Explanation:
to go from °C to K all you have to do is add 273.
Assuming that the ammonium sulfide formula is (NH4)2S then you can see that there are 2 nitrogen, 8 hydrogen and 2 sulfur atoms for every ammonium sulfide. If the amount of ammonium sulfide is 8.9 moles, then the number of hydrogen atoms should be: 8/1 * 8.9 mol= 71.2 moles
<span> A homogeneous mixture is composed of a single visible phase while a heterogeneous mixture has two or more</span>
It would be 35.8 Calories or calories. Not sure about that part. Hope this helps though.
Answer:
is a way of presenting information about the chemical proportions of atoms
Explanation: