What is always conserved in a chemical reaction?

A. Mass is always conserved in a reaction.

B. Energy is always conserved in a reaction.

C. Mass and energy are both conserved.

D. Nothing is always conserved in a reaction.

HNO2 + F - HF + NO2 in the reverse reaction HF is a/an

What is allotrope of carbon?

Genetic engineering___.

What is likely to be found in placer deposit

Which of the following could have a negative impact on science

True or False: A Solar eclipse occurs when Earth casts a shadow on the Moon.

Compared to a phosphorus atom, a P3 - ion has (1) more electrons and a larger radius (2) more electrons and a smaller radius (3) fewer electrons and a larger radius (4) fewer electrons and a smaller radius

1. Crystals of ammonium chloride, NH4Cl, seem to disappear when mixed with water. The resulting clear liquid containing ammonium chloride and water is a A) compound. B) new substance. C) homogeneous mixture. D) heterogeneous mixture. 2.

During a laboratory experiment you discover that an enzyme-catalyzed reaction has a delta G of - 20 kcal/mol. If you double the amount of enzyme in the reaction, what will be the delta G for the new reaction

A liquid mixture in which particles can be seen and easily separated by settling or filtration is a a. solution. b. suspension. c. solvent. d. solute.