How many moles are in 2.12g Cr2O3

Select the term that refers to substances that cannot be broken down physically or chemically. A. alloy B. atoms C. molecules D. mixtures

An aqueous solution was prepared containing 1.0mol of AgNO3 and 1.0mol of FeSO4 in 1.00 dm^3. of water. When equilibrium was established, there was 0.44mol of Ag + (aq) in the mixture. Ag + (aq) + Fe2 + (aq) Ag (s) + Fe3 + (aq).

The total energy of a system remains

Donald is making a model of a nitrogen atom. The box for nitrogen in the periodic table is shown. To represent a neutral atom, which of these must Donald include in his model?

Sprinters set in the starting blocks at the beginning of a race rely on what kind of energy conversion

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