What types of reactions is shown below? check all that apply 2H2O2->2H2O+O2

A) synthesis

B) decomposition

C) combustion

Which energy transformation occurs when an electrolytic cell is in operation? (1) chemical energy → electrical energy (2) electrical energy → chemical energy (3) light energy → heat energy (4) light energy → chemical energy

This element has 2 electrons it its outermost energy level and belongs to the 3rd period

What is a correct definition of a solution A. A homogeneous mixture B. A heterogeneous mixture C. A Primary mixture of elements D. A graduated substance

20 gallons into liters

A certain indicator has a color chart that shows that when the indicator is yellow, the solution is acidic. What is true about a solution that produces a yellow indicator?

What is the best way to transform a chemical potential energy into internal kinetic energy?

A reaction starts with 20.0 grams of lithium hydroxide (LiOH) and produces 31.0 grams of lithium chloride (LiCl), what is the percent yield of lithium chloride (LiCl) ? * LiOH + KCl - LiCl + KOH A) 64.5% B) 88.6% C) 81.5% D) 92.8%

You aren't sure if your pH meter needs to be calibrated, so you put it in a buffer solution that has a known pH of 7. You take four separate readings of the solution with the pH meter. The meter reports the pH as 5.5, 8.6, 6.3, and 9.4.

Can you explain and read this equation 2Mg + 02 - - 2MgO

The label of a gas cylinder has come off in your laboratory. You know that only one species of gas is contained in the cylinder, but you do not know whether it is hydrogen, oxygen, or nitrogen.