This is how osmium appears in the periodic table. Rounded to the nearest whole number, how many neutrons, on average, are in an atom of osmium?

76

114

190

266

What happens when an acid dissolves? A. Oxygen is added to the solution. B. It is no longer an acid, C. Hydrogen gas is released, D. H increases in solution.

1. Two pots have been sitting on the stove for a while. One pot has a copper handle and the other has a wooden handle. Which handle would you rather touch? Why?

How many zinc atoms are there in 65.4 g?

What is the difference between cells, tissues and organs

When you squeeze an air-filled balloon, what happens inside? A. There are more collisions of air molecules against the wall of the balloon. B. There are fewer collisions of air molecules against the wall of the balloon. C.

At 25°C 12 M H202 is decomposed after 30 minutes the concentration of the H2O2 is found to be 9.5 M what is the average reaction rate for this decomposition reaction.

Give an example of a solution that can be seperated by simple distilation.

What is the h + concentration for an aqueous solution with poh = 3.35 at 25 ∘c? express your answer to two significant figures and include the appropriate units?

What information does a phase diagram give

Which cell structures function like power plants for plant or animal cells? A. nuclei B. vacuoles C. ribosomes D. mitochondria