What is the initial mass of Technetium-104? What is the half-life of Technetium-104?

What mass of Technetium-104 is left after
5 half-lives?

How much Technetium-104 will remain
after 2 hours?

Newtons second law deals most cosely with

When 225mg of anthracene, c14h10(s), was burned in a bomb calorimeter the temperature rose by 1.75k. calculate the calorimeter constant. by how much will the temperature rise when 125mg of phenol, c6h5oh(s), is burned in the calorimeter under the same conditions? (δch< (c14h10,s)=–7061 kj mol−1.)

The rules of engagement (roe) working group is often used to (select all that apply.)