The reaction below was carried out in an acidic solution.
[+103 —>12
Which statement is true about this equation?
Although it is unbalanced, it can be balanced by using the half-reaction method.
It has been balanced by using the half-reaction method.
It has been balanced by directly using spectator ions.
Although it is unbalanced, it can be balanced by directly using spectator ions.

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

The speed of light is around 6.706×10^8 miles per hour. what is the speed of light in units of miles per minute?

Which is a chemical property of iron? a. it forms iron oxide (rust) when exposed to moisture and air. b. it is a gray–black metal that is hard to the touch. c. it has a melting point of 2795°f (1536°c). d. it is a good conductor of heat