Determine the volume of the box and the block. Determine the ratio of the block to the box: Multiply this number by 100 to turn it into a percent. Complete this statement: The volume of the block is percent of the volume of the box. Determine the ratio of the number of hits to the number of shots: Multiply this number by 100 to turn it into a percent. Complete this statement: The block was hit percent of the time. Compare the results of step 2 to the results of step 3. Are the percentages similar? Write a conclusion discussing the following items: Based on your findings, do you think Rutherford's hypothesis was reasonable? Restate Rutherford's hypothesis and describe how you tested it. State whether your results support the hypothesis. If they do not, can you suggest some error in experimental procedure (other than general human error) that might explain it? Finally, explain how this experiment confirms the nuclear model of the atom and the idea that most of the atom is empty space.

The isotonic saline solution described in part a is connected to an unknown solution via a semipermeable membrane, the unknown solution level drops. based on this information, what can be said about these two solutions?

1. combine iron and copper (ii) sulfate solution. (hint: iron will form the iron (iii) ion) fe + cuso4 → 2. combine lead (ii) nitrate and potassium iodide solutions. pb(no3)2+ kl → 3. combine magnesium metal and hydrochloric acid solution. mg + hcl → 4. electrolysis (splitting) of water. h2o → 5. burning magnesium. mg + o2 →

Astudent made a graph plotting the progress of a reaction over time. the student forgot to label the y-axis of the graph. a graph is shown with two graph lines. one graph line starts at a higher position on the y axis and slopes downwards towards the right. the other graph line starts at a lower position on the y axis and slopes upwards towards the right. the two graph lines stop short of intersecting each other and continue as separate lines which gradually become straight and parallel to the x axis. a vertical line is shown at a point where the two graph lines finally became parallel to the x axis. this vertical line is labeled equilibrium. the title on the x axis is time and an arrow pointing towards the right is shown above time. the title on the y axis is left blank. what best explains the label that the student should use on the y-axis? amount, because as the amount of product decreases, the amount of reactant increases over time. reaction rate, because forward and backward reaction become equal at equilibrium. amount, because the amounts of reactants and products become constant after equilibrium is reached. reaction rate, as the rate of forward reaction increases and rate of backward reaction decreases over time.