0.02550 grams pt to atoms?

Jupiters atmosphere is mostly made of ___ a. helium b. methane c. ammonia d. hydrogen

115 grams of solid aluminum perchlorate are dissolved in 504 ml of water at 20°C. Calculate the concentration of aluminum perchlorate in parts-per-million.

Calculate the radius of an iridium atom, given that ir has an fcc crystal structure, a density of 22.4 g/cm3, and an atomic weight of 192.2 g/mol.

What is the oxidation number of P in PF6^-

Element M has two isotopes,^104M and ^106M. The relative atomic mass of M is 104.4. What is the relative abundance of ^106M? A:10% B:20% C:30% D:40%

Which of the following errors could cause your percent yield to be falsely high, or even over 100%? Select ALL that apply. A.) Heating the sample too vigorously. B.) Handling the crucible directly with your hands. C.

If 56.8 ml of bacl2 solution is needed to precipitate all the sulfate ion in a 554 mg sample of na2so4 (forming baso4), what is the molarity of the solution?

is the number of total atoms on the left side of a balanced equation always equal to the number of total atoms on the right side of the equation?

Compared to a sample of helium at STP, the same sample of helium at a higher temperature and a lower pressure A) condenses to a liquid. B) is more soluble in water C) forms diatomic molecules. D) behaves more like an ideal gas

What country was overrun by the Japanese