The initial concentration of C2H6N2 in the first-order reaction C2H6N2→N2+C2H6 is 0.427 M. After 30. seconds, the concentration of C2H6N2 is 0.395 M. What is the rate constant k for the reaction?

Imagine that you're able to fully dissolve a powdered substance in water. What can be said about this creation? A. The creation is a solution. B. The powdered substance is the solvent. c. Water is the solute. D. The creation is a suspension.

What causes a cavern to form

What is the net ionic charge for an oxygen ion

Liquid diphenhydramine comes in a concentration of 12.5 mg per 5 ml . Using the dosage calculated, how many milliliters of diphenhydramine should be administered to the child?

Star has a diameter of 4,680,000,000 units. Express this number in scientific notation. The star has a diameter of 4.6846.80.468 x 109.

Why does the body of the bird covered with feathers?

One molecule of caffeine contains 8 atoms of carbon, 10 atoms of hydrogen, 2 atoms of oxygen, 4 atoms of nitrogen. write the formula for caffeine with the elements in the order they are given.

A piece of magnesium metal is heated in the presence of chlorine gas, and a reaction takes place. What compound will most likely be produced? A. Mg2C1 B. MgCl3 C. MgCl2 D. MgCI

What is the pressure of the gas in this mercury manometer if h = 81 mm and atmospheric pressure is 749 mmHg

A microscope containing two or more lenses is an