Answer:
answer of your question is
-x= -7
Step-by-step explanation:
i don't see any graphs so i don't know how to help
16/4
hope this helps!
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Answer:
C) 212.53
Step-by-step explanation:
3x60=180 (3 minutes is 180 seconds)
180+32.53=212.53 seconds
Answer : The time taken by the element to decay to 2 grams is, 75.2 minutes
Step-by-step explanation:
Half-life = 13 min
First we have to calculate the rate constant, we use the formula :



Now we have to calculate the time passed.
Expression for rate law for first order kinetics is given by:

where,
k = rate constant = 
t = time passed by the sample = ?
a = initial amount of the reactant = 110 g
a - x = amount left after decay process = 2 g
Now put all the given values in above equation, we get


Therefore, the time taken by the element to decay to 2 grams is, 75.2 minutes