The red color in the ore hematite is caused by the presence of what metal?

A. iron

B. sulfate

C. copper

D. aluminum

Explain how the "electron sea model" accounts for the various properties seen in metals.

List the number of protons, neutrons, and electrons in Iodine-127. (atomic number is 53)

The atomic model that describes an atom as a spherical object containing a certain number of electrons trapped in a mass of positive charge is often called

What areas did japan invade in 1931 and 1937

The activation energy of a reaction is 56.9 kj/mol and the frequency factor is 1.5*1011/s. Part a calculate the rate constant of the reaction at 25 ∘c.

A student was comparing the solubility of equal amounts of table salt and table sugar at different temperatures. The table below shows the four samples that the student used and the temperature of the water that they were dissolved in.

How many cases of measles would you predict were reported last year

what happens when baking soda is mixed with vinegar a a new substance is formed B the substances are the same c but the baking soda stays the same but the vinegar changes form D the mixture turns from a liquid into a solid

Which celestial object is found in kuiper belt

When K - and I - combine