Can I please have help understanding this question? I would really appreciate it. Thanks! A gas cylinder contains 4 x 10^4 cm^3 of hydrogen at a pressure of 2.50 Pa and a temperature of 290K, the cylinder is used to fill balloons. Each balloon when filled contains 7.24 x 10^3 cm^3 of hydrogen at a pressure of 1.85 x 10^5 Pa and a temperature of 290K, calculate the number of balloons that can be filled. (The answer is 741 but I dont understanf the method and concept.)

Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.

Suppose that 27 j of work is needed to stretch a spring from its natural length of 6 m to a length of 9 m. (a) how much work is needed to stretch the spring from 12 m to 14 m? j (b) how far beyond its natural length will a force of 78 n keep the spring stretched?

One hazard of space travel is debris left by previous missions. there are several thousand masses large enough to detect by radar orbiting the earth, but there are far greater numbers of very small masses such as flakes of paint. calculate the force exerted by a 0.110 mg chip of paint that strikes a space shuttle window at a relative speed of 5.00 ✕ 103 m/s and sticks, given the collision lasts 6.00 ✕ 10-8 s. such a collision chipped the window of the ill-fated challenger in june 1983, causing $50,000 of damage.