Which elements combine by forming an ionic bond

A) Sodium and potassium

B) Sodium and oxygen

C) carbon and oxygen

D) Carbon and sulfur

How many grams of silver oxide are needed to react with 7.9 g of hydrochloric acid produce silver chloide and water?

Describe how fission produces electricity at nuclear power plants.

A (n) Blank is an abbreviation for the name of an element ans usully has either one or to letters

If the first isotope has a mass of 259.98 amu and a percent abundance of 35%, what is the percent abundance of the second isotope?

What are chemical reactions?

Bacteria are only found in decaying matter. A. True B. False

Which is considered a chemical mutagen? tanning beds tobacco X-rays precious metals

Combining 0.380 mol Fe2O3 with excess carbon produced 13.7 g Fe Fe2O3 + 3C → 2Fe + 3CO What is the actual yield of iron in moles? What is the theoretical yield of iron in moles? What is the percent yield?

When a hydrogen electron makes a transition from n=3 to n=1?

If two electrons have same number of protons but different number of neutrons can they be atoms of the same element?