Chemistry
When there are two electrons in the same orbital, they have:

Same spin
No spin
Opposite spin
Same or opposite spin

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Chemistry
Kinetics is the study of:

How fast the reactions go
The rate of chemical reaction
All of these are correct
The mechanisms and paths of the molecules take in joining from one reactant to products

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Chemistry
The Latin word formica means ant. The name formic acid is derived from this Latin word because

ants are attracted by the odour of this acid
this corrosive acid is secreted by ants to drive away their enemies
this acid, in ancient times, was used to eliminate ant-hills
this acid was first obtained by the distillation of ants

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