Which unit can be used to express solution concentration

In the reaction Mg+Cl2=MgCl2 what should be the coefficient for Cl2

The reaction of 52 g of NH 3 with excess oxygen yields 45 g of NO according to the balanced equation below. What is the percent yield? 4 NH3 + 5 O2 → 4 NO + 6 H2O a. 83% b. 100% c. 18% d. 25% e. 49%

Which explains the information needed to calculate speed and velocity? Both reguire the total distance, but velocity also requires time and displacement Both reguire time, but velocity requires displacement and speed requires distance Speed requires

What happens to the frequencies of electromagnetic waves as their wavelengths increase? A. They decrease. B. They increase. C. They stay the same.

What color is lead.?

According to Table I, which equation represents a change resulting in the greatest quantity of energy released? 1. 2C (s) + 2H2 (g) - > C2H4 (g) 2. 2C (s) + 3H2 (g) - > C2H6 (g) 3. N2 (g) + 3H2 (g) - >2NH3 (g) 4. N2 (g) + O2 (g) - > 2NO (g)

Calculate the number of liters in 3.25 g of ammonia

Adding drops of food coloring to a beaker of water more organized system?

Some chemical hazards are physical and some are related to the potential health effects of exposure. Click only one box for each response Toxicity Carcinogenic Flames Inhalation hazard Flying objects

Which would be best categorized as heat transfer by convection? A) Wearing a white shirt to stay cool on a summer day.