Light comes from A. Nerve impulses. B. Electrons. C. An object vibrating. D. Photons

How many electrons in mole will discharge 2g of Copper 2 ions

How can two objects have the same temperature but different thermal energies?

A solution of naoh has a concentration of 5.51 x 10-3 m. what is the ph of this solution? ph = 2.26 ph = 5.51 ph = 11.74 ph = 3.00

After 1911, most scientists accepted the theory that the nucleus of an atom was very dense and very small and had a positive charge.

Which is the correct way to represent 0.0035 kg by using scientific notation?

A) the ka for acetic acid (h3cco2h) is 1.737 * 10-5. what is the pka for this acid? b. use the pka calculated above to determine the ph at which [h3cco2h]=[h3cco2-].

Suppose you take a piece of hard wax from an unlit candle. After you roll the wax between your fingers for a while, it becomes soft. What State of matter is the softer wax? Is it possible for wax to change without changing state

Prevailing winds peru

Foods labeled "fat free" can actually contain less than 0.5 grams of fat.

Plants make their own food. The chemical reaction for this process is shown in the equation below. CO2 + H2O + energy → C6H1206 + O2 What are the products in this chemical reaction? O A. C6H1206 + energy O B. H20 + energy O C. CoH1206+02 O D.