The answer for this would be B!!
Answer:
Chemical reactions are represented on paper by chemical equations. For example, hydrogen gas (H2) can react (burn) with oxygen gas (O2) to form water (H20). The chemical equation for this reaction is written as: The '+' is read as 'reacts with' and the arrow '' means 'produces'.
Explanation:
hope this helps
Answer:
c. T
and the new period is 
Explanation:
the period of a pendulum is given by:

as we can see the period of oscillation of the pendulum does not depend on the mass, so if the mass is reduced this will not affect the period, it will remain the same.
The new period if thr pedulum oscilates on Pluto, will be calculated with the previous equation, but the gravity will be

where g is the gravity on earth: 
so the new period:

and we know that
is the original period 
so the new period in terms of the orginal period is:
