Determine the number of significant figures in 400

An element consists of 5.85% of an isotope with mass 53.940 u, 91.75% of an isotope with mass 55.9349 u, 2.12% of an isotope with mass 56.9354 u, and 0.28% of an isotope with mass 57.9333 u.

Which of the following is true regarding chemical and nuclear reactions?

Identify this symbol. cl-. 1) anion 2) cation 3) atom 4) molecule

how many orbitals are in the 3d sublevel?

What does magnesium carbonate and hydrochloric acid make?

When does a spring tide take place? At the beginning of spring Only during the spring season Only after spring is over At any time

The highest cloud are known as

What is the mass of 4.85 X 10^22 atoms of iron (Fe) ?

If element x has 95 protons how many electrons does it have

Which of the following when dissolved in deionized water would make a good conducting solution? a) methanolb) sugarc) baking soda