How many molecules are in 237g (about a cup of water)

If the compound potassium chloride is written in words, how do you know to write the formula with one potassium and one chloride

What are three signs that a chemical change has taken place

Water-soluble vitamins: a. often result in toxicities b. are easily excreted in the urine c. are stored in body tissues to a large extent d. are soluble in body fluids but insoluble in cooking water e. are not damaged by heat or oxygen exposure

Valence electrons (electrons in the outermost shell - available for bonding)

What is the number of valence electron of (Na).?

Which of the following best describes what causes the phases of the moon? The alignment of the sun, Earth, and moon The speed of the moon around the Earth The speed of the Earth around the sun The alignment of the planets

At which temperature would atoms of a He (g) sample have the greatest average kinetic energy? (1) 25°C (3) 273 K (2) 37°C (4) 298 K

In the reaction, HCl + H2O produces H3O + Cl, what is the conjugate acid

Draw the curved arrow mechanism for the conversion of aniline into benzenediazonium ion, and draw the final product that forms after the benzenediazonium ion is treated with

Sodium chloride is stirred into water to form a solution. in this case, what are sodium chloride and the water?