Answer:
Remove some water from the jar before adding the mixture.
Explanation:
She will speed it up when removing some water it will stay dry and not be sticky to separate the two ingredients
Answer:
The ratio of proton acceptor to proton donor is 1000
Explanation:
In a weak acid, the proton donor is HA and proton acceptor is A⁻. Using Henderson-Hasselbalch formula:
pH = pka + log₁₀ [A⁻] / [HA]
7,0 = 4,0 + log₁₀ [A⁻] / [HA]
3,0 = log₁₀ [A⁻] / [HA]
10³ = [A⁻] / [HA]
1000 = [A⁻] / [HA]
That means <em>the ratio of proton acceptor to proton donor is 1000</em>
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I hope it helps!
Answer:
E = 3 × 10¹⁰ J
Explanation:
Mass, m = 100 kg
We need to find energy made by the loss of 100 kg of mass. The formula between the mass and energy is given by :
E = mc²
Where c is speed of light
Putting all the values, we get :
E = 100 kg × (3×10⁸ m/s)²
= 3 × 10¹⁰ J
So, the required energy is 3 × 10¹⁰ J.
Answer:
3
Explanation:
There are 3 significant figures and four decimal places. How do you know how many significant figures? Now let us convert the given number to standard form; we have 2.56*10^-2. Only the two significant figures were shown.