Answer:
5.5 grams
Explanation:
To find how much of the isotope remains, you need to use the half-life equation:
In this equation,
-----> N(t) = remaining mass (g)
-----> N₀ = initial mass (g)
-----> t = time (hrs)
-----> h = half-life (hrs)
You can find the remaining mass by plugging the given values into the equation and solving.
N(t) = ? g t = 30 hrs
N₀ = 22 g h = 15 hrs
<----- Half-life equation
<----- Insert values
<----- Simplify exponent
<----- Solve
<----- Multiply 22 and 0.25
Answer:
Price for 20years = $2,079.8
Recommendation: Solar energy is cheaper and more efficient for the community. The source is renewable source of energy with zero pollution
Explanation:
It depends on which type of power
<span>the ability to do something or act in a particular way, especially as a faculty or quality. is probally the one your looking for
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Answer:
C. NaCl and A. Water(H2O)
Explanation:
Products are on the right side of the equation, reactants are on the left.