Give the chemical symbol of an element in the third period (row) of the periodic table with three valence electrons. Express your answer as a chemical symbol

A farmer has concerns about the nitrogen levels in her soils. What can she do to ensure that the nitrogen bacteria are replenished in the soil? Question 6 options: Clear cut the area surrounding the field.

Why is it difficult to prove the law when gas is produced?

Another metal phosphate is aluminum phosphate. It will behave similar to calcium phosphate in an acid solution. What is the net ionic equation including phases for AlPO4 (s) dissolving in H3O + (aq) ?

Hydrazine (N2H4), a rocket fuel, reacts with oxygen to form nitrogen gas and water vapor. The reaction is represented with the equation: N2H4 (l) + O2 ( g. → N2 ( g. + 2H2O ( g.

Which of the following does not contain carbon from the bodies of plants and animals that died millions of years ago? a. natural gas b. oil c. coal d. phosphate salts

How many moles of a gas will occupy 2.50L at STP

Which has more kinetic energy, a small sports car traveling at 30 km/hr or a large tractor-trailer traveling at 75 km/hr?

A Lay's potato chip weighing 4.03g is put into a bomb calorimeter containing 895.5g of water at 25.10°C. If this increases the temperature of the surrounding water to 48.89°C, what is the amount of calories per serving if 1 serving = 28.38g.

Which element is the least metallic between cadmium, silver, zinc, or iron?

Describe the motion of molecules in an ice cube an in a radiator in winter