A sample of water with a mass of 622.7g undergoes a temperature change from 90.98°C

to 96.70°C. What is the heat change in Joules? Cwater=4.18J/g°C

A) 0251608.10

B) 3561.8J

C) 14888.5)

D) 2.51X105)

Name one gas that can form when the carbon in coal burns! And describe its harmful effects

A home solar energy unit stores energy for later use. On a sunny day, the temperature of the water in the tank increased from 23.4naughtC to 39naughtC. If 2.

The average rate of consumption of br - is 1.86*10-4 m/s over the first two minutes. what is the average rate of formation of br2 during the same time interval?

In bohr's atomic theory when electron moves from one energy level to another energy level closer to the nucleus: A. Energy is emitted B. Energy is absorbed C. No change in energy occurs D. Light is emitted E. More than one of these might occur

If you converted 4.5 grams of water to moles you would have

If The mass of a box is increased and the force stay the same, determine the relationship with acceleration

A balloon contains 0.15 moles of co2 gas. how many molecules of co2 are in the balloon?

Acids A) are generally proton donors B) produce H + ions in solution C) are electron pair acceptors D) may include all of these characteristics

3.011 x 10^23 atoms F in grams

What would you use if you needed to determine the density of an object? balance and graduated cylinder balance and scale scale and spectroscope