The awnser is Hydrogen. It had the greatest average atomic mass
Answer:The speed of a wave is dependant on four factors: wavelength, frequency, medium, and temperature.
Explanation:
What you were given is the balanced chemical equation
Answer: 3.72 M
Explanation:
Expression for rate law for first order kinetics is given by:

where,
k = rate constant = 
t = age of sample = 15.0 minutes
a = let initial amount of the reactant = 10.0 M
a - x = amount left after decay process = ?




The concentration of
in a solution after 15.0 minutes have passed is 3.72 M