Answer:
The substance has a density of 2.636 grams per mililiter.
Explanation:
We must remember that density (
), measured in grams per mililiters, is the mass of the substance (
), measured in grams, divided by its volume (
), measured in mililiters. That is:
In addition, a kilogram equals 1000 grams and a liter equals 1000 mililiters. If we know that 
and 
, then:
The substance has a density of 2.636 grams per mililiter.
1 bus = 12 cars
1 truck = 3 cars
4 trucks= 12 cars
1 bus = 4 trucks
1 bus = 4000 basketballs
8 buses= 32,000 basketballs
Answer:The frozen balloon shrank because the average kinetic energy of the gas molecules in a balloon decreases when the temperature decreases.
Explanation: hope this will help
For your first question, that equation only works if your situation is occurring at a constant temperature. Your original question is such a situation - everything occurs at 298.15 K. Therefore, you can use this value in the equation to calculate work.
For your second question, Charles' Law describes how the volume of gas changes as you heat or cool it, PROVIDED PRESSURE AND MOLES OF GAS REMAIN CONSTANT THE WHOLE TIME. In your original question above, temperature stays constant while volume changes. However, what they don't tell you is that this necessarily requires a change in either pressure or moles of gas. Because the question works with the same sample the of gas the whole time (i.e. moles are constant), it is pressure that is changing (and this change will occur according to Boyle's Law, since temperature and moles are held constant).
Hope that clarifies things!
I believe you may be referring to cold welding? This is when two pieces of metal are put together in a vacuum and are thus permanently "cold-welded" together
