The formula for the half life is simply:
t1/2 = ln 2 / k
where k is the rate constant and can be calculated from
the formula:
rate = k [A]
where [A] is the initial concn = 0.25 M
k = 4.36 × 10-2 M s-1 / 0.25 M = 0.1744 s-1
t1/2 = ln 2 / 0.1744 s-1
<span>t1/2 = 3.97 s</span>
13.6 mol of CuCl2
you wanna use the factor label
A). Object A, because the shorter the distance between objects result in a stronger gravitational force
Answer:
80g=0.08kg
20cm=0.02m
density=m/v
= 0.08/0.02
=4kg/m^3
it is less than density of water so it floats
Answer:
<h3>The answer is 7.5 g</h3>
Explanation:
The mass of a substance when given the density and volume can be found by using the formula
<h3>mass = Density × volume</h3>
From the question
volume = 5 mL
density = 1.5 g/mL
We have
mass = 1.5 × 5
We have the final answer as
<h3>7.5 g</h3>
Hope this helps you