On the right side, there are
• 2•2 = 4 atoms of Nb
• 2•5 = 10 atoms of O
so among the reactants on the left, the reaction is balanced as
4 Nb + 5 O₂ → 2 Nb₂O₅
You lose 20%.
if it were going up to 72 to 90 it would be a 25% increase
Answer:
B
Step-by-step explanation:
B is the correct answer.
To find the answer, use 
, and then use the equation 
To find it's half life.
P → q
EXPLANATION
p → q is a symbol for a conditional statement, an if-then statement in which p is a hypothesis and q is a conclusion. The logical connector in a conditional statement is denoted by the symbol →.
The conditional is defined to be true unless a true hypothesis leads to a false conclusion.
