Name some gaseous element in unpolluted air?

A lithium atom has an atomic number of 3 and a mass of 7. The number of electrons which it has in the 1st shell (principal energy level) is?

For the unbalanced equation, what is the coefficient for O2?? C5H10 (l) + ? O2 (g) →? CO2 (g) + ? H2O (g) A. 5 B. 10 C. 15 D. 6 E. 1

Which of these elements reacts rapidly when dropped in water: rubidium (Rb), magnesium (Mg), cobalt (Co), argon (Ar), or cadmium (Cd) ?

Which most likely represents the process of dissolving carbon dioxide in soda? v

Sort the phrases pertaining to pure substances and mixtures as either true or false.

Four moles of hydrogen chloride (HCl) gas react with one mole of oxygen (O2) gas to produce two moles of chlorine gas (Cl2) and two moles of water gas (H2O).

what noble gas electron configuration is achieved by the bromine atoms in a molecule of BR2, a diatomic element?

What are facts on osmosis?

If a map of temperature displayed stripes parallel to the equator with equal temperatures at equivalent distances north and south of the equator, it would mean that only blank affected temperature.

What is the term for the amount of salts in water? Evaporation Evaporation Salinity Thermocline Density