What is true about an element that is reduced?

a) It increased in electronegativity.

b) It decreased in electronegativity.

c) It gained electrons.

d) It lost electrons.

What is the molarity of a 2.0 l sodium hydroxide solution containing 1.0 grams of solute?

Among the alkali earth metals, the tendency to react with other substances A) increases from bottom to top within the group. B) is shown by the ways they react with water. C) varies in an unpredictable way within the group.

Which direct measurement would provide evidence that the energy of a substance had changed? A. Temperature B. Heat C. Mass D. Volume

Consider the reaction CaCO3 (s) - -> CaO (s) + CO2 (g) calculate the equilibrium constant for this reaction at 298.15K.

If the mass of one or two spheres increases, how does it affect the gravity between the two spheres?

Isopropyl alcohol (C3H8O) is a common solvent used for cleaning and disinfectant purposes. Its mass spectrum is shown below.

How is an unsaturated fat converted to into a saturated fat?

Is hydrofluoric acid stronger than acetic acid?

How much energy does an electric hair dryer use if it draws 8.3 amps of current when using 120 volts for 5.0 minutes?

You need a 45% alcohol solution. on hand, you have a 480 ml of a 40% alcohol mixture. you also have 85% alcohol mixture. how much of the 85% mixture will you need to add to obtain the desired solution?