Who uses chemicals?

A log's mass is 5 kg. After burning, the mass of the ash is 1 kg. Explain what may have happened to the other 4 kg of mass.

What is the mole ratio of fe304 to fe?

Two substances have different ΔHfusion values. If given the same number of moles of each substance, and assuming the same amount of heat is applied to both substances, the substance with a lower ΔHfusion value will convert from a solid to a liquid

What is the ratio of moles of solute to liters of solution called?

In the reaction 2 CO + O2 → 2 CO2, what is the minimum number of moles of O2 required to produce 1.0 mole of CO2? A 0.25 B 0.50 C 1.0 D 2.0

An electron that is in the highest energy level of an atom and determines the atom's chemical properties is called a (n) paired electron. opposite-spin electron. valence electron. extra electron.

If the substance in the diagram was heated to "T2," what is happening if the substance is allowed to approach T1? Select all that apply. The average kinetic energy is decreasing. The average kinetic energy has increased.

What is the electron configuration of silicon?

The specific rotation of (r) - 2-butanol is - 13.5°. what specific rotation would be observed for a 3:1 mixture of (s) : (r) 2-butanol?

What element would be sidekick of fluorine and its enemies?