Micah is investigating the transformation between potential and kinetic energy within a system. he uses a swinging pendulum in his investigation. he records his observations of the pendulum at different positions and creates the table below.

kinetic and potential energy of a pendulum

position kinetic energy (joules) potential energy (joules)

1 0 50

2 25 25

3 50 0

4 25 25

5 0 50

which statement best describes the energy transformation in michah's investigation?

the total energy of the system is maintained as energy is transformed.

the total energy of the system increases as kinetic energy is created.

the total energy of the system decreases as potential energy is destroyed.

the total energy of the system changes as energy is added to it.

Suppose that during that icy hot lab 65,000 j of energy were transferred to 450 g of water at 20°c what would have have been the final temperature of the water

What is the molarity of 60.0 grams of naoh dissolved in 750 milliliters of water? a) 1.1 m b) 2.0 m c) 12 m d) 75 m

Since the gas in your graduated cylinder is a mixture of butane and water vapor, you must determine the partial pressure of the butane, pbutane, alone. to do this, consult a reference and record the partial pressure of the water vapor, pwater, at the temperature you recorded. use the following formula to compute the partial pressure of the butane. pbutane = atmosphere - pwater use the following combined gas law formula and compute the volume that the butane sample will occupy at stp. (hint: convert both temperatures to kelvin.) pbutane x voriginal = pstandard x vfinal troom tstandard use the following ratio and proportion formula to determine the mass of butane needed to occupy a volume of 22.4 l at stp. grams of butane you used “x” grams of butane ml of butane corrected to stp = 22,400 ml compute the theoretical molar mass of butane based on its formula and the atomic masses on the periodic table. compare your experimental results from #3 to the theoretical value of #4, computing a percent error of your findings using this formula: % error = measured value - accepted value x 100 accepted value use the following ratio and proportion formula to determine the mass of butane needed to occupy a volume of 22.4 l at stp. need asap