Answer: 0.0345 sec
Explanation:
Rate law says that rate of a reaction is directly proportional to the concentration of the reactants each raised to a stoichiometric coefficient determined experimentally called as order.
![Rate=k[H_3PO_4]^2](https://tex.z-dn.net/?f=Rate%3Dk%5BH_3PO_4%5D%5E2)
k= rate constant = 
Expression for rate law for first order kinetics 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
for completion of 20 % of reaction



The time taken for the concentration of
to decrease to 20% to its natural value is 0.0345 sec
Answer:
A. Erosion
Explanation:
Erosion is the process in which soil and rock are worn away and transported by wind or water and transported to another location.
The image below shows how water has eroded a coastline.
B is wrong. Chemical weathering is the disintegration of rocks by reactions with water and the acids dissolved in it
C is wrong. Deposition is the process in which sediments carried by wind, water or ice are deposited at another location.
D is wrong. Physical weathering is the breakdown of rocks and soil by physical processes like the freezing of ice in the cracks of rocks.
I'm not sure what the question is, this is a lab proecdure
Answer:
29.9 moles
2C²H¹⁰ needs 13 moles of O²
4.6 C⁴H¹⁰ needs X moles of O²
X= 13× 4.6 ÷ 2 = 59.8 ÷ 2 = 29.9 moles
Answer:
d
Explanation:
a) This is not an equation.
b) This is not an equation.
c) The reactant side has 1 Na and 2 O while the product side has 2 Na and 2 O, therefore it is not balanced
d) The reactant side has 4 H and 4 O and the product side has 4 H and 4 O, therefore it is balanced.