Which of the following are indicators of a chemical change?

A gas sample is prepared in which the components have the following partial pressures: nitrogen, 555 mmHg; oxygen, 149 mmHg; water vapor, 13 mmHg; argon, 7 mmHg. What is the total pressure of this mixture?

50.0 g of oxygen are advalible for the combustion of 25g of carbon is this an adequate anount if so by bow much in excessbis the oxygen if not by how much is the carbon in excess

For the procedural error, indicate if the error will affect the actual yield of copper (II) saccharinate product and if it does, will it raise or lower the actual yield: Weighing the crystals while the crystals are still wet

A change in position of an object is its

Identify the following as a suspension or a colloid. marshmallow suspension colloid

If an element has 1 valence electrons, how many dots will be in the elements dot diagram?

What is the temperature of a gas at STP?

What is the numerical meaning of centimeter

You run an experiment to test the effects of temperature on solubility. What would you heat? A.) solvent B.) solute C.) the room B.) the beaker

What happens when a firework is ignited?