The total bonding energy for the products of a reaction is 2535 kJ/mol and the bonding energy of the reactants is 1375 kJ/mol. Calculate the change in enthalpy, and classify the reaction as endothermic or exothermic.

Which symbol and unit of measurement are used for electric current?

A reasonable and educated guess based on what you know and observe is called a

The density of ice is 920 kg/m3 and that of sea water is 1030 kg/m3. what fraction of the total volume of an iceberg is exposed? show your work, don't just state the answer.

How is a pure substance different from a mixture? a.) mixtures cannot be separated by physical means b.) mixtures are made up of more than on component c.) a pure substance is heterogeneous d.) pure substance are separated by physical means

Which of the following statements is true about the decomposition of a simple binary compound? The product could be an ionic or a molecular compound. The products are predictable. The reactants are the constituent elements.

Reaction rate lab report

The absence of which cell structure would indicate a cell is prokaryotic?

When 0.880 g of an organic compound containing carbon, hydrogen and oxygen is burned completely in oxygen, 1.760 g of co2 and 0.720 g h2 o are produced. what is the empirical formula of the compound?

In ammonium chloride salt (nh4cl) the anion is a single chloride ion, cl. what is the cation of nh4cl

What does copper II sulfate do to the enzyme activity?