Discuss the different observations that you would record during an investigation into the energy transformations of a lamp that uses electrical energy.
Answer:
It becomes shorter
Explanation:
A wave, such as a Soundwave, controls volume based on it's Wavelength. A Louder sound has a shorter wavelength, a softer sound has it's waves spread out more. Amplitude is simply a fancy name for Volume in Amps. When amplitude increases, the volume increases. Thus, waves become shorter.
Answer:
B.
Explanation:
This is physical change as the popcorn has expanded in size.
Answer: 0.360 moles
Explanation:
To calculate the moles :


The balanced chemical reaction is:
According to stoichiometry :
2 moles of require = 3 moles of
Thus 0.240 moles of
will require=
of 
Thus 0.360 moles of chlorine needed to react to produce 38.9 of iron (III) chloride.
Answer:
It has an electrolyte that acts as a salt bridge.
Explanation: