How much time is required before a 2.50-mg sample of 146 61 pm (t1/2 = 2020days) is reduced to 1.25mg

2020 days

Explanation:

The half life equation is:

A = A₀ (½)^(t / T)

where A is the final amount, A₀ is the initial amount, t is the amount of time, and T is the half life.

Here, A = 1.25 mg, A₀ = 2.50 mg, and T = 2020 days.

1.25 = 2.50 (½)^(t / 2020)

0.5 = ½^(t / 2020)

1 = t / 2020

t = 2020

It takes 2020 days.

hi,

what occurs during a solar eclipse?

there are small tides across earth.

the moon is between earth and the sun.

p.s. im not sure if the first answer is correct because during a solar ecliphse there are spring tides and i dont know if they are the same.

statement #3 on andre"s list is false.