Answer: B. Ca2+ + 2e- ---------> Ca
Explanation:
Reduction involves the gaining of electrons as well as a decrease in the oxidation state of the atom or ion.
In this case; Ca2+ gains two electrons and the oxidation state is reduced from +2 to 0.
Ca2+ + 2e- ---------> Ca
Answer:
a pencil being sharpened
freezing water
boiling water
Explanation:
a physical change doesn't change the chemical structure of an object. That is why the other 2 are wrong
Volume= length•width•height
V=5•7•3
V= 105cm^3
Stars on the main sequence fuse hydrogen into helium via a six-stage sequence of reactions
In order to change celcius to kelvin always add 73 to it leaving you with -195.93
