Molecular Physics | Thermodynamics Answers

A rocket is moving with acceleration 3g.calculat the effective weight of an astronaunt sitting in the rocket when his actual weight is 75 kg

I’ve developed a soap bubble solution (like the kind kids play with, but for making giant soap bubbles) and I want to store it in a concentrate form, to be diluted later. I’m using 6.5 g. of guar gum powder and 7 g. baking powder per 7 fl. Oz. of Dawn Professional Manual Pot & Pan Dishwashing Detergent, which is to be diluted into 1 gallon of water.
The resulting diluted solution is perfect, however, when stored in its concentrated state, the guar gum and baking powder settle out of the detergent within a day or two, leaving a layer of sediment at the bottom of the bottle, which must be mixed back into the detergent before dilution.
How can I keep this from occurring, while still maintaining a pourable, fluid consistency? I really need a shelf stable, uniform, concentrate solution that won’t separate!

which of these is the best surface for absorbing thermal radiation(silver,white,shinny black,dull black)?

two particles are released from same height at an interval of 1 second. how long after the first particle begins to fall?? will the two particle be 10m apart? (g= 10m/s)

I've tried them, I just cannot get it and I have a test tomorrow. Please help?

1) A 2.0 kg piece of ice at 0 degrees Celsius melts in a tub and the resulting water comes to room temperature at 20 degrees Celsius. How much heat did the ice absorb from its surroundings?

2) A tray containing 0.250 kg of water at 20 degrees Celsius is put into a refrigerator. How much hear must the refrigerator remove from the water to turn it into ice at 0 degrees Celsius.

3) If 1 kg of water at 20 degrees Celsius is mixed with 2 kg of water at 50 degrees Celsius, what will be the final temperature of the mixture?

the initial temperature of a 250 ml of a gas is 45 degrees Celsius with a pressure of of 689 mm Hg. what will be the new pressure if the volume is lowered to 150 ml at a temperature of 95 degrees Celsius?

if the tempeture of 50.0L of a gas at 40.0 degrees C falls by 10.0 degrees C what is the new volume of the gas if the pressure is constant?

Two vessels of different material are identical in size and in dimension.They are filled with equal quantity of ice at 0C. If ice in both vessels melts completely in 15 minutes and 10 minutes, compare the thermal conductivity of the metals of both vessels?

540 calories of heat is required to vaporize 1 gm of water at 100C.determine the entropy change involved in vaporizing 5 gm of water?

A 3550 mL sample of gas at 20.0 degrees C and a pressure of 650.0 torr is allowed to expand to a volume of 8.00 L. The final pressure of the gas is 32.0 kPa. What is the final temp. in degrees celsius?