Calculate the average atomic mass of chlorine if 75.77% of its atoms have a mass of 34.97 amu and 24.23% of its atoms have a mass of 36.96 amu.

A soft drink contains 11.5% sucrose (c12h22o11) by mass. how much sucrose, in grams, is contained in 355 ml (12 oz) of the soft drink? (assume a density of 1.04 g/ml.)

Which statement best summarize the relationship between the muscular system and the cardiovascular system? A. The heart is protected from injury by the breastbone. B. Nutrients are carried to the heart through arteries and veins C.

Buffers are because of low tolerance to changes in pH. a. Critical to biological systems because of low b. Present in our blood stream c. Usually mada dally made up of a weak acid and its conjugate ban d.

Given: h2o (aq) + h2o (l) h3o + (aq) + oh - (aq) δh°rxn > 0 when the temperature of a sample of pure water is raised above 25°c,

If a race car runs using octane fuel the reaction that occurs in the pistons of the engine is

What is the relationship between chemical equilibrium and the rates of forward and reverse reaction

What is the valence of Fluorine

When liquid helium is exposed to room temperature, it forms a gas. Which best explains why this happens? The liquid helium absorbs energy from the air in the room. The particles in the air absorb the energy of the liquid helium.

Why was Bohr's model considered more accurate than Dalton's model?

Select the statements that correctly describe a buffer. 1) The pH of a buffer solution does not change significantly when any amount of a strong acid is added. 2) A buffer is generally made up of a weak acid and its conjugate base.