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seraphim [82]
3 years ago
11

Help please now im failing bad

Chemistry
1 answer:
Ivahew [28]3 years ago
7 0
Look up the answer online and look u the steps on how to do it as well it will help
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What are atoms made up of
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Answer:

They are made up of electrons, neutrons and protons

Explanation:

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Any force that causes an object to move in a circle is called a(n) a balanced force. b unbalanced force. c gravitational force.
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Answer- D. centripetal force

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Match each vocabulary term with the correct definition
Ilia_Sergeevich [38]

Answer:

Amplitude ----> C.) The distance from a crest or trough to the rest position on the horizontal axis

Crest ---> A.) The highest point of a wave

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The critical point of carbon dioxide is 304 k and 73 atm. under which conditions is carbon dioxide a liquid? i. 303 k and 73 atm
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7 0
2 years ago
A monoprotic weak acid, HA , dissociates in water according to the reaction HA(aq)↽−−⇀H+(aq)+A−(aq) The equilibrium concentratio
Pachacha [2.7K]

Answer:

pK_{a} of HA is 6.80

Explanation:

pK_{a}=-logK_{a}

Acid dissociation constant (K_{a}) of HA is represented as-

                K_{a}=\frac{[H^{+}][A^{-}]}{[HA]}

Where species inside third bracket represents equilibrium concentrations

Now, plug in all the given equilibrium concentration into above equation-

K_{a}=\frac{(2.00\times 10^{-4})\times (2.00\times 10^{-4})}{0.250}

So, K_{a}=1.6\times 10^{-7}

Hence pK_{a}=-log(1.6\times 10^{-7})=6.80

6 0
2 years ago
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