Which of the following pairs does not share the same empirical formula?

1) CH2O and C3H6O3

2) PbCl2 and PbCl4

3) NO2 and N2O4

4) C3H12 and CH4

During a lab activity, students prepared two solutions separately at the same temperature. Later they mixed the solutions and the temperature dropped.

Metal cations are atoms that have a positive charge. What type of bond is metal cation likely to form?

Sitting at a four-legged table there is: 1 grandma, 2 moms, 2 daughters and a granddaughter. How many legs are under the table?

Two containers are bought in thermal contact. Container 1 held a liquid with specific heat 4.03 kJ/kg K at a temperature of 306 K. Container 2 held another liquid with specific heat 3.51 kJ/kg K at a temperature of 173 K.

Will a parachute slow a skydiver more at a very high altitude or a lower altitude?

All of the following can be recycled except clothing aluminum cans compact fluorescent bulbs plastic drink bottles

Use Henry's law and the solubilities given below to calculate the total volume of nitrogen and oxygen gas that should bubble out of 1.0 L of water upon warming from 25 ∘C to 50 ∘C.

Washing soda, a compound used to prepare hard water for washing laundry, is a hydrate, which means that a certain number of water molecules are included in the solid structure.

When you light a fire place what energy transformation takes place

Correctly identify the generic formula for a synthesis reaction. a. AB + A+B b. A+B → AB c. CxHx + O2 → CO2 + H2O d. AB + C + AC + B e. AB + CD → AD + CB