What is the mass of 5.40*1021 platinum atoms?

How does the amplitude of a wave show how much energy is in the wave?

Give the name and symbol of the prefixes used with SI units to indicate multiplication by the following exact quantites. (a) 103 (b) 10-2 (c) 0.1 (d) 10-3 (e) 1,000,000 (f) 0.000001

Electrons. The carbon atom has a total of

What is the mass in grams of a 8.4 mole sample of iron?

What type of property is volume

What is the total number of valence electrons in a sulfide ion in the ground state? (1) 8 (3) 16 (2) 2 (4) 18

Write the name and formula of the compound made of magnesium and fluorine

How was or wasn't the scientific method followed in this experment

1‑propanol (nn ‑propanol) and 2‑propanol (isopropanol) form ideal solutions in all proportions. Calculate the partial pressure and the mole fraction (yy) of the vapor phase of each component in equilibrium with each of the given solutions at 25 °C.

4. suppose you are setting up a reaction that requires an iodide salt and are planning to use sodium iodide. however, at the last minute you find that you are out of sodium iodide, so you must use potassium iodide instead.