The information below describes a redox reaction. 3 equations: First: upper A g superscript plus (a q) plus upper A l (s) right arrow upper A g (s) plus upper A l superscript 3 plus (a q). Second: upper A G superscript plus (a q) plus e superscript minus right arrow upper A g (s). Third: upper A l (s) right arrow upper A l Superscript 3 plus (a q) plus 3 e superscript minus. What is the coefficient of silver in the final, balanced equation for this reaction? 1 2 3 4

An alpha particle is: a hydrogen atom a nucleus of helium two neutrons an electron

How much energy is required to vaporize 2 kg of copper? a 4730 kj b 207kj c 9460 kj d 414kj

C=59(f−32)the equation above shows how temperature f, measured in degrees fahrenheit, relates to a temperature c, measured in degrees celsius. based on the equation, which of the following must be true? a temperature increase of 1 degree fahrenheit is equivalent to a temperature increase of 59 degree celsius.a temperature increase of 1 degree celsius is equivalent to a temperature increase of 1.8 degrees fahrenheit.a temperature increase of 59 degree fahrenheit is equivalent to a temperature increase of 1 degree celsius.a) i onlyb) ii onlyc) iii onlyd) i and ii only