What are the 5 signs of chemical change?

O2 + ch4 co2 + h2o what would be the coefficient of the diatomic oxygen molecule in the balanced reaction? a. 1 b. 2 c. 4 d. 6

Why are very high temperatures and pressures required for fusion to occur? A) to generate the neutrons that are needed to break the nuclei B) to overcome the repulsion between the protons in the nuclei that join C) to maintain the proper conditions

How many grams of a 23.4% by mass naf solution is needed if you want to have 1.33 moles of naf?

If u mix glycerin and methanol, which would float on the other?

Which of the following is not a physical change? Melting ice Breaking glass Filtering a mixture Burning paper

Which statement describes the redox reaction that occurs when an object is electroplated? A. It is spontaneous and requires an electric current. B. It is spontaneous and produces an electric current. C.

How many grams are in 0.21mol sample of ethyl alcohol?

How is the evidence from a fire scene collected? What should be avoided?

What is covalent compound?

Sample of 76 G of NaCl is dissolved to make 1 L of a solution what is the molarity of the solution