A tank contains 0.5 m3 of nitrogen (N2) at -71 C and 1356 kPa. Determine the mass of nitrogen, in kg, using the ideal gas model.

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

Write a paragraph at least 10 sentences explaining how rocks are used today in society

98 ! and brainliest plz ! the below reaction can be categorized as more than one type of reaction. which reactions are these, and what are the types of reactions?