Which elements have similar behavior?
A. Barium
B. Silicon
C. Aluminum
D. Strontium
E. Osmium
F. Beryllium

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

Needthe meter is the standard unit for: 1) height 2) length 3) weight 4) mass

At 300 mm hg, a gas has a volume of 380 l, what is the volume at standard pressure