The chemical standard for the quantity of a mole is based on which substance?

Using the appropriate Ksp values, find the concentration of K + ions in the solution at equilibrium after 600 mL of 0.45 M aqueous Cu (NO3) 2 solution has been mixed with 450 mL of 0.25 M aqueous KOH solution. (Enter in M.) (Ksp for Cu (OH) 2 is 2.

When an atom gains an electron to become an ion what happens to its size?

What happens to the electrons in an ionic bond?

If a tree falls and nobody is around to here it fall does it make a sound? this has always been a riddle

Calculate the molarity of 0.289 moles of FeC13 dissolved in 120 ml of solution

Which term names the group of organisms able to interbreed and produce fertile offspring?

A sample of a compound contains 32.0 g C and 8.0 g H. Its molar mass is 30.0 g/mol. What is the compound's molecular formula

What is the molecular formula of the compound CH2 with molar mass = 42.0 g/mol? C4H8 C3H6 C2H4 C2H18

A gas has a volume of 27.5 L at 302 K and 1.40 atm. How many moles are in the sample of gas? A. 0.0401 mol B. 0.645 mol C. 1.55 mol D. 2.14 mol

Why does the body of the bird covered with feathers?