Chemistry, 09.12.2020 01:50 jetblackcap
The temperature of a 9.0 g sample of glass changed from 20 to 50 when it absorbed 680 J of heat. What is the specific heat of this glass sample?
Answers: 2
Chemistry, 22.06.2019 05:50
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.
Answers: 3
Chemistry, 22.06.2019 06:00
Calculate the mass of silver needed to react with chlorine to produce 126g if silver chloride?
Answers: 3
Chemistry, 22.06.2019 10:00
Drug abuse will not lead to physical and psychological dependence. true or false ?
Answers: 2
Chemistry, 22.06.2019 12:30
Which of the following describes a compound? (hint: carbon and oxygen bo a. a piece of pure carbon, containing only carbon atoms b. oxygen gas surrounding a solid piece of carbon c. a substance made of two oxygen atoms for each carbon atom carbon and oxygen atoms mixed without being bonded together
Answers: 1
The temperature of a 9.0 g sample of glass changed from 20 to 50 when it absorbed 680 J of heat. Wha...
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