when hydrogen and oxygen combine to synthesize water, releasing 571.7kJ of energy. How much energy is released when 10g of hydrogen is reacted with an excess of oxygen?

Arecipe calls for 1.2 cups of oil. how many liters of oil is this?

Sally is making a model of a magnesium atom with an atomic mass number of 24 for her chemistry class. she has foam balls for the protons, neutrons, and electrons. she has added 6 neutrons to her model so far. how many more neutrons does she need to add to complete her neutral atom of magnesium?

Which statement describes the phase change that occurs when dry ice is placed in an open container at room temperature?