An electron is traveling at 1.500 × 105 m/s. what is its speed in light years per century? (useful conversion factors: 1 light-year ≡ 9.460730472580800 × 1015 m)

Asolution has a ca2+ concentration of 0.049 m and an f- concentration is 0.147 m at equilibrium. the value of ksp for caf2 at 25°c is 4.0 x 10-11. will this solution form a precipitate? yes no

The minerals found in bones are deposited by living cells called

What is a metal replacement reaction