You read through a site about inventions that contains the following paragraph:

"the most significant invention of the 20th century was the cell phone. life as we know it has completely changed since, with everyone having instant access to other people around the world through multiplayer games, text messaging, voice, and more. most people don't have landline phones anymore as there is no point—they carry cell phones on themselves. no other invention can compare with the drastic changes brought by cell phones."

which of the following is true about this paragraph?

a. it is objective, with the purpose of informing people about the significance of cell b. phones. it is objective, with the purpose of persuading people to purchase and use cell phones.
c. it is biased, with blanket statements that cannot be proven related to cell phones.
d. it is biased, with factual statements that are supported by data on cell phones.

The climate of the continental united states is generally 1. tropical 2. temperate 3. arctic 4. highland

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.

0.09 moles of sodium sulfate in 12 ml of solution