To balance a half-reaction in basic solution, you need to add enough of which substances to balance the equation?

H + and H 2O

H + and OH -

H2O and NO2

OH - and H +

OH - and H 2 O

A glass flask has a volume of 500 mL at a temperature of 20° C. The flask contains 492 mL of mercury at an equilibrium temperature of 20°C. The temperature is raised until the mercury reaches the 500 mL reference mark.

The use of fertilizers in agriculture has significantly altered several nutrient cycles including:

What is the Atomic mass of helium

In a report to a supervisor, a chemist described an experiment in the following way: "0.0800 mol of H2O2 decomposed into 0.0800 mol of H2O and 0.0400 mol of O2.

How many moles are present in a 24.5 gram sample of K2Cr2O7?

Before running other simulations, try to think of solutions to this global energy dilemma. Write a paragraph in response to the following questions: Should we invest more heavily in renewables at a high up-front financial cost, and/or should we

What is a sedimentary rock formed from the remains of tiny sea animals.

Consider the following thermochemical equation: C (s) + O2 (g) → CO2 (g) ΔH = - 393 kJ CO (g) + ½O2 (g) → CO2 (g) ΔH =

Two colorless solutions are mixed together. Bubbles form as the solution is stirred. Give TWO possible explanations for this result.

What is a light-year? A. the distance light travels in one earth year B. the distance light travels from the sun to the earth C. the distance light travels in one orbit of the moon D. the time it takes light to travel across the universe