10) a balloon was filled to 1.25 lat 25.2°c. 0.235 g of helium was used to fill it. what is the pressure?
r = 0.08206 l. atm/°c-mole.

Two friends at different locations want to communicate with each other by sending low energy signals. which of the following methods can they use to communicate? a) produce x-rays using colliding electrons and send them to radios, which capture sound b) send messages using infrared radiation, which travel in the form of waves c) send radio waves through intervening media like radio and television d) produce sound waves using microwaves from heated objects

What royal scientist used the 29th day of frozen vapor to encounter elements for mastering new culinary creations?

Most materials are not magnetic because their magnetism has worn off. their magnetic domains are arranged randomly. they lack magnetic fields. earth’s heat has destroyed their magnetism.