During redox reactions:

A. protons from one molecule replace the electrons lost from another molecule.

B. the loss of electrons from one molecule is called reduction.

C. electrons are lost from one substance and added to another substance.

Is it balanced when you push a box and it doesn't move?

A student is given two metal cubes that look similar. the first had an edge length of 1.05 cm and a mass of 14.32 g, while the other had an edge length of 2.66 cm and a mass of 215.3 g.

What is the standard enthalphy change ΔHo, for the reaction represented above? (ΔHof of C2H2 (g) is 230 kJ mol-1; (ΔHof of C6H6 (g) is 83 kJ mol-1; )

Elena makes the table below to determine the number of atoms of each element in the chemical formula 3 (NH4) 2SO4 Total atoms Element Nitrogen Hydrogen Sulfur Calculation 1x2x3 4 x 2 x 3 1 x 4 x 3 4x3 24 12 Oxygen 12 What mistake did Elena make?

When the [H+] in a solution is 1.7 * 10-9 M, what is the pOH

The mass of a 2.0 centimeter3 sample of a substance is 3.2 grams. Calculate the density of the substance. Type the correct answer in the box.

What type of wave it do the contractions of the snakes muscles make as a snake moves forward

Explain the difference between a ph of 8 and a ph of 12 in terms of h concentration

Why do we not have solar and lunar eclipses every month?

How many grams are in 8.9 moles of CaCO3