PH is based on a logarithmic scale, so every number is 10 times that of the one under it. For instance, say 8 has 10 OH-. This means that 11 should have 10000 OH-.
It has 10^3 times the amount of OH ions.
Ans: 187.5 grams of Al2O3
Answer:
200 grams is the mass of 15% of the solution of lime that is formed by dissolving 30g of calcium hydroxide in water.
Explanation:
Mass of solution = M
Mass percentage of the solution of lime = 15%
Mass of lime or calcium hydroxide = m = 30 g
The Formula of mass percentage is given as :
On substituting the values in ab above formula :
200 grams is the mass of 15% of the solution of lime that is formed by dissolving 30g of calcium hydroxide in water.
Answer:
Correct option : B
Explanation:
First compare with
there are two lone pair in but only one lone pair presen in the so more lone pair means more repulsion and hence less bond bond angle beacuse of lone pair repulsion bonded atom come closer and hence bond angle decreased .
bond angle inversely proporional to repulsion so more repulsion means less bond angle
does no exist it exist only in the form of and here assuming because in case of difficult to compare bond angle because here two different type of bond angle is present.
there is no lone pair in the so here will no be any repulsion and hence bond will be more in as compared to
Mechanical energy of a body is simply the combination of its kinetic energy and potential energy