Answer:
9.999x10^-7M
Explanation:
First, let us calculate the concentration of the hydrogen ion in both cases:
For pH 6:
pH = —Log [H+]
6 = —Log [H+]
—6 = Log [H+]
Take the anti-log of —6
[H+] = 1x10^-6M
For pH 10:
pH = —Log [H+]
10 = —Log [H+]
—10 = Log [H+]
Take the anti-log of —10
[H+] = 1x10^-10M
The difference between the [H+] of pH 6 and [H+] of pH 10 is given by:
1x10^-6 — 1x10^-10 = 9.999x10^-7M
Answer:
50N
Explanation:
Force (N) = mass (kg) × acceleration (m/s²)
0.25kg times 200m/s² = 50N
The correct response is the second option.
6.1103x10^4. As this was the only answer that had the same number of significant figures as the starting value.
Answer is: MgF₂, magnesium fluoride.
Magnesium fluoride is salt, ionic compound, because magnesium is metal from 2. group of Periodic table of elements and has low ionisation energy and electronegativity, which means it easily lose valence electons, fluorine is nonmetal with greatest electronegativity, which meand it easily gain electron, so magnesium cation (Mg²⁺) and fluorine anion (F⁻) are formed.
Answer:
burning of wood ,cooking an egg,baking a cake,rusting of iron,digestion of food .
