Answer: The correct is 0.5 moles.
Explanation:
Answer: 17 years
Explanation:
Expression for rate law for first order kinetics for radioactive substance is given by:
where,
k = rate constant
t = age of sample
a = let initial amount of the reactant
a - x = amount left after decay process
a) for completion of half life:
Half life is the amount of time taken by a radioactive material to decay to half of its original value.
b) for 8900 g of the mass of the sample to reach 7700 grams
Thus it will take 17 years
Answer:
0.00375 moles OF KHP
Explanation:
Equation of reaction of NaOH and KHP :
KHC₈H₄ O₄(aq) + NaOH(aq) → NaKC₈H₄O₄(aq) + H₂O(l)
the reaction required 25ml
Molarity = no of mole / volume in liters
no of moles = Molarity × volume in liters
no of moles of NaOH = 0.150 × (25/1000) = 0.00375 moles
using the balanced equation above
1 mole of NaOH requires 1 mole of KHP
therefore
0.00375 mole of NaOH will require 0.00375 mole KHP.
The removal of excess wastes helps in maintaining chemical homeostasis and prevents breaking down of systems that causes a serious health issue.
<u>Explanation:</u>
Human body is composed of many different organ system that are inter related with each other's functions. If the function of one system is disturbed then the function of other system also gets affected resulting in affecting the entire human body functions. The system that is used to remove the excess wastes and unwanted things from the human body is an excretory system. It performs tow major function in a human body. It removes unwanted things and it also helps in draining the broken down components.
The excretory system helps in the control of internal chemical homeostasis. When a living organism's physical and chemical conditions are maintained steadily it is called as homeostasis. This system also helps in maintaining the human systems in a controlled and good condition thereby preventing the failure of other systems and serious health damages.
