CHEMISTRY PLEASE HELP!!!

Chemistry

1 answer:

FinnZ [79.3K]4 years ago

8 0

Answer:

1 and 3 only

Explanation:

When a reaction is equilibrium, its forward reaction and reverse reaction are happening at the same rate. For a reaction to have a forward reaction and reverse reaction, the reaction must be reversible. Therefore, statement #2 is incorrect. Now, since the forward reaction and reverse reaction are moving at the same rate, the rate at which products are being converted to reactants is equal to the rate at which reactants are being converted to products. This means the concentrations of the reactants and products stay constant. That means statement #3 is correct. For equilibrium to happen, the system must be closed though. If a system is closed, that means no hydrogen, iodine, or hydrogen iodide can escape the system. Therefore, statement #1 is also incorrect.

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You have at your disposal 3 1-pound bags of various pure salts that dissolve readily in water. You can add one of the bags to a

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Answer:

This question appears incomplete

Explanation:

However, it should be noted that addition of soluble salts generally lowers the freezing point of water hence after the addition, water will no longer freeze at 0°C but lower.

Soluble salts tend to form more ions in water, it is these ions that are responsible for interfering with the hydrogen bonds hence lowering the freezing. Thus, (since each bag are of the same weight) <u>the bag that contains the salt that ionizes more in water will lower the freezing point by the greatest amount</u>.

NOTE: Different weight of the salts could lead to more ions been formed in the water by some salts as against the other.

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A student needs to make 0.855 L of a sodium bromide solution for an experiment. The concentration of the required solution is 0.

d1i1m1o1n [39]

Answer:

Explanation:

Molarity = moles/liters of solution

moles = molarity x Liters of solution

= 0.350 m/L x 0.855 L

= 0.299 mol

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