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hichkok12 [17]
3 years ago
13

If HA, an acid, is 15 percent dissociated in a 2.00 molar solution, what is the Ka for the solution?

Chemistry
1 answer:
Tom [10]3 years ago
8 0

Answer:

A. 5.3 X 10^-2

Explanation:

I got 100 on PLATO

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astra-53 [7]
How i be feeling waiting for my questions to be answered in the middle of a quiz.
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3 years ago
Water has a density of 0.997 g/cm^3 at 25 degrees C; ice has a density of 0.917 g/cm^3 at -10 degrees C. (question part a) If a
Luden [163]
Mass of water added:
0.997 x 1500
= 1495.5 grams

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Volume = 1495.5 / 0.917
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The average atomic mass recorded on the periodic table for krypton is 83.80 u. This indicates that the most abundant isotope of
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Krypton-84 is the most abundant type of Krypton. The answer is C.

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2 years ago
A given mass of air has a volume of 6.00 L at 101 kPa. At constant temperature, the pressure is decreased to 25.0 kPa. Calculate
GenaCL600 [577]

Answer:

24.24 L

Explanation:

Boyle’s law, also called Mariotte’s law, a relation concerning the compression and expansion of a gas at constant temperature.

This empirical relation, formulated by the physicist Robert Boyle in 1662, states that the pressure (p) of a given quantity of gas varies inversely with its volume (v) at constant temperature; i.e., in equation form, pv = k, a constant.

Real gases obey Boyle’s law at sufficiently low pressures, although the product pv generally decreases slightly at higher pressures, where the gas begins to depart from ideal behaviour.

As, PV = k

P₁ V₁ = P₂ V₂

Given P₁ = 101 KPa

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P₂ = 25 kPa

So, V₂ = P₁ V₁ /P₂ = 101 *6/25 = 24.24 L

4 0
3 years ago
How many moles is 1.25 x 1024 atoms of bromine?
Irina-Kira [14]

Answer:

2.08 moles (3 s.f.)

Explanation:

number of moles

= number of atoms ÷ Avogadro's constant

Avogadro's constant= 6.022 ×10²³

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= 1.25×10²⁴ ÷ (6.022 ×10²³)

= 2.08 moles (3 s.f.)

8 0
3 years ago
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