In a balanced equation, coefficients always represent

a

the ratio of volumes of substances

b

the volume ratios of reactants and products

c

the mole ratios of reactants and products

d

the number of atoms present

Why do scientists measure and record mass instead of weight

Sometimes when performing a crystallization, one solvent alone will not work and you have to use a solvent-pair. Will the solvent pair diethyether and water work

Which of the following observations indicate an Atom has neutrons

Scientists were able to determine the age of the moon through analyzing rock samples that were collected. What technique did they use? A) evaluating eras and periods B. studying geology C. radiometric dating D. reviewing fossils

Planck's equation E = h * v is used to determine which of the following? Question options: the energy released as an electron moves to a higher orbital the number of lines on the atomic spectrum for an atom the energy released as an electron moves

A rope experiences three 400 N forces to the left and three different 410 N forces to the right. (A) Will accelerate to the left (B) Will accelerate to the right (C) Will not accelerate

An ionic bond involves the transfer of what? * Olons Protons Electrons Neutrons

During an Experiment a scientist notes that a sample turned red. which kind of data did the scientist record A. average data B. quantitative data C. measured data D. qualitative data

Why is chemistry important for the study of living things

How much does radon cost per gram