Which is the formula mass of Na2SO4?

119.06 amu

125.98 amu

142.05 amu

174.12 amu

An element with the atomic number of 13 and mass number of 27 has how many neutrons?

A substance added in The final stages to remove sulphur from coal is

Which description refers to fog

What is the correct order of increasing density?

Gram formula for carbom tetrachloride

Aluminum and Oxygen gas will react to form Aluminum Oxide (Al2O3). When the equation is balanced, How many moles of Al2O3 are formed when a mixture of 0.36 moles Al is ignited? a. 0.12 b. 0.18 c. 0.28 d. 0.46

Which state of the West produces the widest varieties of fruits, vegetables, and nuts? A) California B) Colorado C) Wyoming D) Alaska

A chemical engineer for a fertilizer company is determining the most efficient way to produce ammonia. the engineer carries out the haber reaction under four different conditions.

What type of Bond exist in a molecule of hydrogen Iodide

Which common material is an example of a polyamide?