Has a total of twelve $5 and $10 bills in his wallet. He has

5 times as many $10 bills as $5 dollar bills. How many of each does he have?

What is the sum of the coefficients of the following balanced chemical equation? KI + Pb (NO3) 2 → KNO3 + PbI2 A) 6 B) 10 C) 18 D) 20

giving the incomplete equation 2N2O5 (g) which set of products completes and balances the incomplete equarion

If 500 ml of mineral oil are used to prepare a liter of mineral oil emulsion, how many grams of the oil, having a specific gravity of 0.87, would be used in the preparation of 1 gallon of the emulsion?

Sociable weavers are a species of bird found in Africa. All males of a colony work together to build a large nest that can house several hundred birds. This is an example of.

If a 3 kg moon rock is moved from the moon to the earth does the mass of the rock change

What volume of 0.0748 M perchloric acid can be neutralized with 115 mL of 0.244 M sodium hydroxide?

A car is traveling at 65 mph. How many feet can you travel in one second

0.901g KHP is fully titrated with 44.1 mL of an NaOH solution of unknown concentration. What is the concentration of the NaOH solution?

What is a MSDS? A document that identifies chemical hazards associated with compounds. Part of a Biosafety manual. Identifies all chemical reactions. Outlines calibration standards.

What mass of Na2SO4 is needed to make 2.0 L of 3.0 M solution? (Na=23g; S=32g; O=16 g)