NEED HELP ASAP. PLEASE SHOW WORK 1) Carbon-14 has a half-life of 5730 years. If you start with a 2.37 g sample, how much would remain after 17,190 years?

2) Manganese-56 is a beta emitter with a half-life of 2.6 hours. What is the mass of manganese-56 in a 500 mg sample at the end of 10.4 hours?

3) A sample of thorium-234 has a half-life of 24.1 days. If that sample is allowed to decay for 96.4 days and 4.67 grams remains, what was the original mass of the sample?

Which statement best describes the flow of energy in this scenario

Which statements are true concerning mineral formation? check all that apply. the slower the cooling, the larger the crystals. the faster the cooling, the smaller the crystals. crystals formed from magma are smaller than crystals formed from lava. minerals can only form in solutions when the solution is heated deep underground. when a solution cools, elements and compounds leave the solution and crystallize as minerals. minerals formed from hot water solutions can form narrow channels in the surrounding rock.

Which statement describes the phase change that occurs when dry ice is placed in an open container at room temperature?