Answer: A
Explanation: Beta particles have a charge of -1
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:
6 moles of Oxygen required
Answer: Clay
Explanation:
Putty is a cementing material which is used for white wash and filling up the holes on the wall. It is a mixture of calcium carbonate along with oil solvent. The dough is a powdery substance. When putty and dough are combined they form a clay which is of high density as compared to other two materials. It is thick and rigid.
So, when a putty and dough combines then a clay will form.