4. Which of the following elements has the greatest electronegativity?

a. Krypton

b. Bromine

c. Phosphorous

d. Sulfur

A chemical reaction was used to separate a sample in to it's components what conclusion about the sample can be formed by Sony techniques used it was a pure substance it was a compound it was a heterogeneous mixture it was a homogeneous mixture

How many oxygen atoms are in 7.20 moles of H2SO4?

A sample of a gas at room temperature occupies a volume of 40.0 L at a pressure of 262 torr. If the pressure changes to 1310 torr, with no change in the temperature or moles of gas, what is the new volume, V2

Mutualism is often the result of

Both isopropyl alcohol, C3H8OH, and ethylene glycol, C2H6O2, are used as antifreeze. When equal masses of each are added to water, which, if either, will be more effective at preventing freezing? A. Isopropyl alcohol B. Ethylene glycol C.

What is the difference between hydrostatic pressure and atmospheric pressure?

What is the change in energy? e of the hydrogen atom as the electron makes the transition from the n=3 energy level to the n=1 energy level?

2. What kinds of elements do molecular formulas contain?

NaOH is an organic compound true or false?

Which of these parts of Dalton's Atomic Theory still holds true? * A. All atoms of the same element are identical. B. Atoms can chemically combine in simple, whole number ratios. C. Atoms have three parts. D.