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Assoli18 [71]
3 years ago
10

Classify the following substances as an element,a mixture or a compound1.limestone​

Chemistry
1 answer:
vovangra [49]3 years ago
3 0

Answer: what’s your color. I wanna know oh oh oh

Explanation: Hahhhahhanahhahhajja

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Consider the energy diagram below.
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A) The catalyzed reaction passes through C.

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3 years ago
How many half-lives will pass by the time 1.56% of I-131 is present? B. Approximately how many days does that equal? *
serg [7]

Answer: Hmmmmm that's crazy....

There are a couple of equations one could use for this type of problem, but I find the following to be the easiest to use and to understand.

Fraction remaining (FR) = 0.5n

n = number of half lives that have elapsed

In this problem, we need to find n and are given the FR, which is 1.56% or 0.0156 (as a fraction).

0.0156 = 0.5n

log 0.0156 = n log 0.5

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n = 6.0 half lives have elapsed

Explanation:

Just wanted to help. Hopefully it's correct wouldn't want to waster your time ;)

6 0
2 years ago
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