Used to determine the probability of having specific offspring from two known parents

what is the half life isotope if after 21 days you have 31.25 g remaining from a 250.0 g starting sample size?

Which of these is common to all chemical changes? A) A change of state occurs. B) A change of color occurs. C) A new substance is produced. D) Heat is released into the air.

Which is a spectator ion in the reaction between AgNO3 (aq) and KCl (aq) ? A) Cl - (aq) B) NO3 - (aq) C) Ag + (aq) D) OH - (aq)

Chemical Reaction Ca + S =

Rhenium (Re) is made up of 37.4% 185Re and 62.6% 187Re. The atomic mass of 185Re is 184.953 amu. The atomic mass of 187Re is 186.958 amu. What is the average atomic mass of rhenium?

When 10 liters of a gas at 1 atm is compressed to 3 liters at constant temperature, what property of the gas changes?

What happens to the particles of a substance when thermal energy is added to the substance? A.) it's particles do not vibrate at all. B.) it's particles move faster. C.) it's particles move closer together. D.). It's particles move slower.

Suppose that you drop three objects into a glass of water: a piece of styrofoam, a piece of oak, and a gold ring. Which float, and which sink? density of styrofoam: 0.005 density of gold ring: 19.32 density of oak: 0.70

How many molecules following formula 3Al2 (SO4) 3

Will mark branliest. Calculating percent yield: For the reaction Cu + 2AgNO3 → Cu (NO3) 2 + 2 Ag, adding 127 grams of copper to lots of silver nitrate yields 410 grams of silver. What is the percent yield of silver? I'm desperate.