Answer:
umm is this free points? cause this looks very ummm weird
Explanation:
The magma in the mantle layer moves, and while it's moving the plates move as well, forming mountains, volcanoes, ridges, etc.
Answer:
The sample should be concentrated in less than 5mL of solvent
Explanation:
The sample should be concentrated in less than 5mL of solvent
column chromatography is a chemistry process used in isolating/extracting a chemical compound from a mixture
some examples of sample compounds used can be water or hydrogen peroxide
The simplest indivisible particle is called the atom. So, this should be the simplest structure.. This is followed by the diatomic element which is a combination of two identical elements. Next, is the molecule which is composed of a group of atoms or same elements.. Finally, the most complex structure is the compound which consist of at least two elements. Thus, the answer is A.
Answer:
B) 2Crº + 6e- --> 2Cr3+
Explanation:
The process of oxidation is where electrons are lost. Thus, out of the 2 ions that change charge(Cr and Cu), we must choose the one where the oxidation number increases(which means electrons are lost). Cr goes from an oxidation number of 0 to an oxidation number of 3+, while Cu goes from an oxidation number of 2+ to 0. Thus, we are looking at the half reaction for Cr. Half reactions never have subtracting electrons, so the answer must be B. I am assuming that last plus should be a -->