(multiple choice!!)
A balloon filled with helium gas at 15.0oC occupies 1.5 L at 760 mmHg. The balloon is immersed in liquid nitrogen at 77 K, changing the volume to 3.00 L. What is the new pressure of the balloon in mmHg?

0.039 mmHg

1950 mmHg

101.6 mmHg

0.0098 mmHg

Select the correct answer from each drop-down menu. describe what happens to a carbon-11 atom when it undergoes positron emission. the decay of a carbon-11 atom _1_, and this causes it to emit _2_.options for 1: > changes a neutron into a proton> changes a proton into a neutron> is hit with a neutron> reconfigures its protons and neutronsoptions for 2: > a negatively charged electron-sized particle> a positively charged election-sized particle> two atoms and several neutrons> two neutrons and two protons

Which description best characterizes the motion of particles in a solid?

Which of the following statements is true about energy quantization at the atomic level? electrons in the outermost orbits are the most stable. electrons in all the orbits around the nucleus have the same amount of energy. electrons in the orbit closest to the nucleus have the least amount of energy. electrons absorb or release the same amount of energy independent of the energy levels.