1. How many moles are contained in 103.4g of sulfuric acid? a) 2.9 * 10^22 molecules of sulfuric acid
b) 5.18 * 10^24 molecules of sulfuric acid
c)12.1 * 10^23 molecules of sulfuric acid
d) 6.35 * 10^23 molecules of sulfuric acid

2. Which of the following statements is true?
a) 1 mole H atoms = 6.02 * 10^23 H atoms
b) 1 mole pennies = 6.02 * 10^23 pennies
c) 6.02 * 10^23 H atoms have a mass of 1.0g
d) The formula mass of O= 32.00 amu

One mole of NH3 contains:
a) 1.806 * 10^24 atoms of hydrogen
b) 1.4g of nitrogen atoms
c) 6.02 * 10^23 molecules of ammonia
d) 7.0g of ammonia

You are performing an experiment in a lab to attempt a new method of producing pure elements from compounds. the only problem is that you do not know what element will form. by your previous calculations you know that you will have 6.3 moles of product. when it is complete, you weigh it and determine you have 604.4 grams. what element have you produced?

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.

Is 9 correct? and can someone me with 10? it’s due tomorrow, you