Calculate the kinetic energy of a ×9.41012kg comet moving at a speed of 39.0kms .Round your answer to 2 significant digits.

13. Heat of Condensation A young inventor approaches you with their invention: they propose a solar-powered water-bottle, which condenses the humidity in the air as drinking water. The bottle has a total volume of 2 L and features a rectangular solar panel (10 cm x 20 cm). Can you cover your daily water-requirements (2 L) with this bottle? Calculate the time required for the water bottle to fill completely given the following parameters: (Assume the device operates at 100% efficiency.) Density of Water P 999.65 kg m-3 Molar mass water M 18.015 g mol-1 Enthalpy of evaporation of water AvapH 44.63 kJ mol-1 Average PV-panel power PAPV 150 W m² Daily sunlight hours tDSL 12 hd-1

Your baby brother is toddling around the house, playing with a toy balloon. You decide to teach him something about physics, so you take the balloon away from him and hide it in the freezer. (His cries are enough to convince you that he is excited about this learning experience.) a) If the temperature inside your house is 25° Celsius, while the temperature inside the freezer is -10° Celsius, then by what percentage will the volume of the balloon change? We will take the pressure inside the balloon as constant. When you put the balloon in the refrigerator, it will shrink. (Try it and see!) c) Sketch a p-V diagram for the gas inside the balloon as it cools inside the regrigerator. Label the axes as completely as possible according to the given information.

Oo.164. Subject  :- Chemistry

Calculate the kinetic energy of a 4.2 x 10^4 kg airplane moving at a speed of 155.ms Round your answer to 2 significant digits.

In the written excerpt it indicates that_____

Stan Moneymaker needs 15 gallons of gasoline to top off his automobile’s gas tank. If he drives an extra eight miles (round trip) to a gas station on the outskirts of town, Stan can save $0.10 per gallon on the price of gasoline. Suppose gasoline costs $3.90 per gallon and Stan’s car gets 25 mpg for in-town driving. Should Stan make the trip to get less expensive gasoline? Each mile that Stan drives creates one pound of carbon dioxide. Each pound of CO2 has a cost impact of $0.02 on the environment. What other factors (cost and otherwise) should Stan consider in his decision making?

Run a simulation to determine if buying 23 boxes is unusual

Solid copper(II) chloride forms a hydrate of formula CuCl2 ⋅ xH2O. A student heated a sample of hydrated copper(II) chloride, in order to determine the value of x. The following results were obtained:       mass of crucible = 16.221 g      mass of crucible and hydrated copper(II) chloride = 18.360 g      mass of crucible and anhydrous copper(II) chloride = 17.917 g   At. Mass: Cu 63.55   Cl 35.45   H 1.008    O 16.00  1. Calculate percentage of anhydrous copper(II) chloride (answer must have 4 sig. fig)