7 Barbara completed an assignment for extra credit in science class. She used a pH meter to find the pH of different substances
After she finished measuring the pHs. she created a diagram that showed the substances arranged in order from the most acidic to
the most basic
2.5 5.0 6.5 7.0 7.4 9.0 125
Cola Acid MB Water Blood 3p Bleach
rain
If Barbara added baking soda--pH 8 4-to her investigation, where should it appear in her diagram?
A. between soap and bleach
B. between milk and water
C. between blood and soap
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5 of 10 Answered
Session Score 1005 (6/6)

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.

Ajet plane is speeding down the runway during takeoff. air resistance is not negligible. identify the forces on the jet.

Mercury turns to vapor at 629.88 k how much heat is lost 175 g of mercury vapor at 650 current condenses to a liquid at 297 ca mercury turns to weber at 629.88 kelvin how much he is lost 175 g of mercury vapor and 650 coming condensers to liquidate 297 kevin