Chemistry, 19.10.2021 01:00 jackferguson34
In a certain "green" house, heat from the sun is absorbed during the day
and then released during the cooler night. How many joules are needed
to raise the temperature of 69.7 kilograms of "heater" (which has a
specific heat of 0.818 J/g) from 25.0 C to 41.0 C?
Answers: 2
Chemistry, 22.06.2019 00:30
Water (2510 g ) is heated until it just begins to boil. if the water absorbs 5.09×105 j of heat in the process, what was the initial temperature of the water?
Answers: 3
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 08:00
Me i dont know what to do! the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.
Answers: 1
Chemistry, 22.06.2019 09:10
Which class of molecules functions as chemical signals? hormones water carbohydrates proteins
Answers: 1
In a certain "green" house, heat from the sun is absorbed during the day
and then released during...
History, 24.06.2020 07:01
Mathematics, 24.06.2020 07:01
Mathematics, 24.06.2020 07:01
English, 24.06.2020 07:01
Mathematics, 24.06.2020 07:01
Mathematics, 24.06.2020 07:01
Biology, 24.06.2020 07:01
Mathematics, 24.06.2020 07:01
Mathematics, 24.06.2020 07:01
Mathematics, 24.06.2020 07:01
Mathematics, 24.06.2020 07:01
Mathematics, 24.06.2020 07:01
Mathematics, 24.06.2020 07:01
Mathematics, 24.06.2020 07:01