Atoms-Tiny particles of matter that cannot be divided
It Alpha radiation consists of helium nuclei and is readily stopped by a sheet of paper. so it's (A)
Answer:
proton :
a particale or atom containing a postive charge
nuutron
a particale or atom that contains a negative charge
electron :
a particale or atom with a negative chrage.
Explanation:
proton:
a stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron, but of opposite sign.
nuetron:
a subatomic particle of about the same mass as a proton but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen.
elcetron:
a stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids.
Explanation:
Half life = 129s
Initial Concentration = 0.527M
Rate constant = ?
Order of reaction = ?
The half-life equation of a first-order reaction does not include a reactant concentration term. A half-life is independent of concentration and remains constant throughout the duration of the reaction.
Order of reaction = First Order
t1/2 = 0.693 / k; where k = rate constant
129 = 0.693 / k
k = 0.693 / 129 = 0.00537s-1
Answer:
The product will form at the same rate at which it decomposes.
Explanation:
hope it helps