Problem 1: Atomic oxygen emits green light with a wavelength of 557.7 nm and red light with a wavelength of 630.0 nm when electrons return to lower energy states after
bombardment by high energy electrons in Earth's magnetosphere. Determine the
frequencies for both the green and red lights produced.

Using complete sentences, explain how to predict the products and balance the reaction between sulfuric acid and potassium hydroxide.

Agroup of students is studying convection current. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other is in an area with warm air. after 10 minutes, the balloon are released from a height of 1 meter. which of the following to the students most likely observe? a) the warm balloon expands and rises. the cold balloon shrinks and sinks b) the balloon both rise. the cold balloon is larger than the warm balloon c) the cold balloon expands and rises. the warm balloon shrinks and sinks d) the balloon rise at the same rate. both balloons are the same size

Hey guys so i need to know what is _nh3+> nh4oh ~chemistry~