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Ainat [17]
3 years ago
13

The number of ions produced when a substance dissolves is always equal to the number of Adams in a chemical formula. What is inc

orrect about following statement?
Chemistry
1 answer:
german3 years ago
5 0
One thing incorrect is that when dealing with a compound, such as H2SO4, that has 7 atoms in the chemical formula, the polyatomic ion SO4 doesn’t dissociate into one Sulfur and four Oxygens. SO4 stays and a PAI.
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When Earth receives energy from the Sun, ____. a. some energy is reflected back into space b. some is absorbed by the atmosphere
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Answer:

D - all of the above

Explanation:

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How can you describe the scientific method
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There are 5 basic steps to the scientific method plus an extra feedback one too
1. Make Observations
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3 0
3 years ago
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Write net ionic equations for the reaction, if any, that occurs when aqueous solutions of the following are mixed. ammonium sulf
aleksandr82 [10.1K]

Answer:

See explanation for details

Explanation:

ammonium sulfate and barium nitrate Answer ‍

Ba2+(aq) + SO4^2-(aq) ----------> BaSO4(s)

lead(II) nitrate and sodium chloride Answer ‍

Pb2+(aq) + 2Cl-(aq) -----------> PbCl2(s)

copper(II) chloride and sodium hydroxide Answer ‍ ‍ ‍ ‍ ‍

Cu2+(aq) + 2OH-(aq) -------------> Cu(OH)2(s)

There can only be a net ionic reaction when a precipitate is formed as the two solutions are mixed together.

4 0
3 years ago
Why is there little heat retained in the warm thermosphere? a. The pressure is too low c. The molecules move too fast b. The pre
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3 0
4 years ago
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The balloon in the previous problem will burst if its volume reaches 400. L. Given the initial conditions specified in that prob
NARA [144]

This is an incomplete question, here is complete question.

A metrological balloon contains 250 L of He at 22 C and 740 mmHg.

The balloon in the previous problem will burst if its volume reaches 400 L. Given the initial conditions specified in that problem, at what temperature, in degrees Celsius, will the balloon burst if its pressure at that bursting point is 0.475 atm.

Answer : The final temperature will be, -44.4^oC

Explanation :

Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.

The combined gas equation is,

\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}

where,

P_1 = initial pressure of gas = 740 mmHg  = 0.974 atm

P_2 = final pressure of gas = 0.475 atm

V_1 = initial volume of gas = 250 L

V_2 = final volume of gas = 400 L

T_1 = initial temperature of gas = 22^oC=273+20=293K

T_2 = final temperature of gas = ?

Now put all the given values in the above equation, we get:

\frac{0.974atm\times 250L}{293K}=\frac{0.475atm\times 400L}{T_2}

T_2=228.6K=228.6-273=-44.4^oC

Thus, the final temperature will be, -44.4^oC

7 0
4 years ago
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