you go out to dinner and the bill comes to $35.51. how much should you tip if you want the tip to be 20.0% of the bill?

Distinguish betwn. Metals s non-metais

What is the empirical formula of a compound with 35.94% aluminum and 64.06% sulfur? A. AlS B. Al4S6 C. AlS2 D. Al2S3 E. AlS3

Most commercial sports drinks are a. calcium-rich. b. good recovery sources. c. sodium-poor. d. highly concentrated

A metal is electrolyzed from aqueous solution by using an electrical current of 1.23 a for 2.5 hours and 3.37 grams of metal is deposited. in a separate experiment the number of electrons used for the reduction of the metal is 2. what is the metal

Write out the balanced equation for the reaction that occurs when Li and H2O react together. You do not need to make your subscripts smaller; just write them out as regular numbers. For example: H2O.

A steel tank with a volume of 9.583 L contains N2 gas under a pressure of 4.972 atm at 31.8 °C. Calculate the number of moles of N2 in the tank. a. 0.002 mol c. 0.525 mol b. 0.018 mol d. 1.90 mol

Is phosphorous an atom, element, or compound

A noble gas consists of three isotopes of masses of 19.99 amu, 20.99 amu, and 21.99 amu. the relative abundances of these isotopes are 90.92%, 0.257%, and 8.82% respectively. what is the average atomic mass of this noble gas? what noble gas is this?

Adding iron filings to sand

Which of the following sets of empirícal formula, molar mass, and molecular formula is correct?