Comparing the pairs of elements listed below, choose the pair in which both atoms have nuclei with the same number of neutrons.

147N and 168O

73Li and 94 Be

2311Na and 2412Mg

3216S and 5425Mn

When are roman numerals used when naming compounds?

The metric system of units is known as the

A 30.0 g sample of a metal was heated in a hot water bath to 80°c. it was then quickly transferred to a coffee-cup calorimeter. the calorimeter contained 100.0 g of water at a temperature of 20°c.

Describe how you would prepare exactly 80 ml of a 0.2 M solution of glycerol in water. The molecular weight of glycerol is 92.1 g/mol. The density of glycerol is 1.26 g/ml 4. What is the concentration of a 1:10 dilution of a 2.

In a chemical equation, which symbol should be used to incate that a substance is in solution? (S) (G) (I) (Aq)

A blank is a special kind of mixture in which one substance is uniformly mixed into another

importance of pH value in daily life

How do metallic bonds differ from covalent and ionic bonds

Will ag2so4 precipitate when 100 ml of 5.0*10-2 m agno3 is mixed with 10 ml of 5.0*10-2mna2so4 solution?

How many grams of H₂ are produced with the reaction of 36 grams of water? 2 Na + 2 H20 - > 2 NaOH + h2