An object has a mass of 6.8 g and a volume of 34 mL. What is the density of the object?

0.04 g/mL

0.1 g/mL

0.2 g/mL

5 g/mL

If the internal energy of the products of a reaction is lower than the internal energy of the reactants, what is the sign of δe for the reaction?

What does the periodic law state?

1. A student needs to make 80mL of a 4.5 x 10^-3 M solution of H_3PO_4 (mm = 98) from solid. Describe how the student would do this. 2. How many moles of AlF_2 are in 4900 mL of of a 5.6M solution? How many moles of F^ - is there? 3.

N2+3H2 2NH3 what will happen if more nitrogen is added

What is Wesley Harris, the writer of this account, trying to escape

Concerning the 10.0 mL of 0.50 M NaCl diluted to 100 mL of solution: When a solution is diluted, does the dilution change the number of grams dissolved? yes no

What causes element name to change

Charles's law states that

If 30mL of 0.5M KOH is needed to neutralize 2M HCl, what was the volume of the acid?

A ratio wave travels 186,000 miles per second. How many kilometers will the wave travel in one microsecond? (1 mile=1.61 km)