What is meant by the negative sign in an answer like"-46.8kJ"? When would you use a positive sign

How many liters are in a cubic meter? 10 100 1,000 10,000 100,000

How many protons electrons and neutrons does 13C contain

What is the oxidation number of the element ge in the compound geo2?

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

Name the compound P4O10

Was the relationship among temperature, heat, and thermal energy?

What will most likely happen when a warmer air mass exists above a polar ice sheet? The temperature of the ice sheet will be lowered. Heat will be transferred from the air mass to the ice. The air mass will exert high pressure and rise upwards.

A 2.00 L sample of gas at 35 C is to be heated at constant pressure until it reaches a volume of 5.25 L. To what Kelvin temperature must this sample be heated?

Of the following reactions, which one produces oxygen gas? Fermentation Anaerobic respiration Aerobic respiration Photosynthesis

Describe the electrodes in this iron-copper galvanic cell.