1. (a) The graph shows how the demand for electricity in the UK changes during one 24-hour period.
Time of day
The table gives the start-up times for two types of power station.
How would these two types of power station be used to meet the demand for electricity during this 24-hour period?
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How many grams of magnesium metal will react completely with 8.3 liters of 5.5 m hcl? show all of the work needed to solve this problem. mg (s) + 2hcl (aq) → mgcl2 (aq) + h2 (g)

Which three statements represent the benefits of performing experiments using computer simulations?

A5 mole sample of liquid acetone is converted to a gas at 75.0°c. if 628 j are required to raise the temperature of the liquid to the boiling point, 15.600 kj are required to evaporate the liquid, and 712 j are required to raise the final temperature to 75.0°c, what is the total energy required for the conversion?