2.245 × 10^6
Since the answer is 2245000, move it over 6 places and use scientific notation.
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If you would like to solve - 21 + (- 13) + (- 9), you can calculate this using the following steps:
- 21 + (- 13) + (- 9) = - 21 - 13 - 9 = - 43
The correct result would be A. - 43.
Answer:
It will take 13.58 minutes until there are 80 grams of the element remaining
Step-by-step explanation:
An element with a mass of 990 grams decays by 16.9% per minute.
We are supposed to find how long will it be until there are 80 grams of the element remaining
Formula :
N(t)=Amount after t minutes
=Initial amount
r = rate of decrease = 0.169
t = time in minutes
Substitute the values in the formula :
t=13.58
Hence It will take 13.58 minutes until there are 80 grams of the element remaining
Answer:
34
Step-by-step explanation: hope this ir right