Answer: 10^-11
Explanation:
to find the concentration of H+ ions given the ph, we use the formula 10^(-pH).
so 10^-11
Answer:
C. The energy released as the bonds in the reactants are broken is greater than the energy absorbed as the bonds in the product are formed.
Explanation:
As ΔH is negative, the given reaction is exothermic.
That means that <em>the enthalpy of the product is less than the enthalpy of the reactants</em>. In other words, part of the energy from the reactants is used to form new bonds (between C and H, for example), while the other part is transfered outside the system as heat.
Thus the correct answer is C.
<u>Answer: </u>The molecular weight of the dibasic acid is 89.6 g/mol
<u>Explanation:</u>
Normality is defined as the amount of solute expressed in the number of gram equivalents present per liter of solution. The units of normality are eq/L. The formula used to calculate normality:
....(1)
We are given:
Normality of solution = 
Given mass of solute = 0.56 g
Volume of solution = 250 mL
Putting values in equation 1, we get:
Equivalent weight of an acid is calculated by using the equation:
.....(2)
Equivalent weight of acid = 44.8 g/eq
Basicity of an acid = 2 eq/mol
Putting values in equation 2, we get:
Hence, the molecular weight of the dibasic acid is 89.6 g/mol
Answer:
A fast-moving wet slurry consisting of a mixture of water and volcaniclastic debris is termed a lahar
Explanation:
A lahar is a debris flow or mud-flow that consists of a mixture of volcanic material, rock particles and water, flowing typically along a river valley down from a volcano
Lahars can be either from either pyroclastic flows or heavy rainfall after a volcanic eruption
Lahars are hazardous as they can result in destruction, severe damage destroying buildings and some times entire small towns are wiped out. This is more so as they move silently and very fast down to the valleys
Answer:
<em>no</em><em> </em>
Explanation:
our heart muscles never get tired, because it has to pump blood in our body 72 times a minute, it is made of special cardiac muscles which helps it to perform it's function without getting tired ....
<em>i</em><em> </em><em>hope</em><em> </em><em>it</em><em> </em><em>helped</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em>
