A chemical reaction was used to separate a sample into its components what conclusion about the sample can be formed A it was a pure substance it was a compound Bit was a heterogeneous mixture it was a homogeneous mixture

What is the correct unabbreviated electron configuration of the following?: vanadium: strontium: carbon:

If the ph of a 1.00-in. rainfall over 1600 miles2 is 3.60, how many kilograms of sulfuric acid, h2so4, are present, assuming that it is the only acid contributing to the ph? for sulfuric acid, ka1 is very large and ka2 is 0.012.

How many molecules are in 3.50 moles of H2O

An atom is described as a nucleus of protons and neutrons surrounded by a (n) A) protons. B) neutron cloud. C) electron cloud. D) negative force.

If you burn 23.4 g of hydrogen and produce 209 g of water, how much oxygen reacted?

If there are 2.54cm in an inch, how many inches are in 14.8cm?

Given the reaction: 2 Na (s) + Cl 2 (g) → 2 NaCl (s) The conversion factor for chlorine gas to sodium chloride is: 1 mol Cl 2 ≡ 2 mol NaCl. True or false?

Taking a cross section of a fiber can reveal what?

A? relay is a relay that not only maintains its contacts in the last position without a continuously energized coil, but also with a mechanical mechanism or remnant magnetism until it resets electrically.

What is a "curie"? A. standard charge of alpha particles B. mass of one alpha particle C. unit of radioactive disintegration D. a unit of gamma radiation