True or false. A change of color is a sign that a chemical reaction is taking place.

The average speed of gas molecules in cylinders A, B, C, and D are 0.001 m/s, 0.05 m/s, 0.1 m/s, and 0.0005 m/s, respectively. Which cylinder contains gas that is closest to absolute zero

As an employee of a summer sports camp, one of your jobs is to prepare the tank of vitamin water for use throughout the day. the mixture calls for 75% pure water and 25% concentrated vitamin drink.

This map shows the ages of the Atlantic oceanic crust

The average kinetic energy of water molecules decreases when

How are chemical compounds formed?

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.

Give two example of compound that decompose to give off oxgyen gas