<span>c. q = 0.75 g x 0.897 j/g•°c x 22°c</span>
1 mol of Br = 79.9 g
15.7 g / 79.9 g = 0.196 moles of atoms
96.09 g/mol good luck and give thanks:)
I believe you are referring zero as the exponent. <span>Any number (except 0) with exponent 0 is defined to mean 1.
</span>
For one thing, there is a rule:
<span> a^m/ a^m = a^m-m = a^0
</span>But (when a is not equal to <span>0),
</span>
a^m/ a^m = 1
Therefore, we must define a^0 as 1.
Answer:
half lives passed=5
given sample=90g
sample left=2.8125g
Explanation:
no. of half lives=total time/half life
no.=19days/3.8days
no.=5 days
after 5 half lives sample left=2.8125g
