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3 years ago

What does it mean when say that a 200-ml sample and a 400-ml sample of a solution of salt have the same

Chemistry

1 answer:

raketka [301]3 years ago

7 0

Answer:

Read explanation.

Explanation:

Molarity is a unit used to measure the $\frac{solute}{solution}$ ratio per unit volume of the solution. So, in other words, and in our case, we call it the $\frac{moles~of~salt}{per~ml~of~solution}$ ratio.

So, the amount of solute (moles of salt) per ml of solution will be the same, but the number of moles in each solution will be obviously different.

Hope it helped,

BiologiaMagister

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Rate law equation The rate of a chemical reaction depends on the concentrations of the reactants. For the general reaction betwe

jekas [21]

Answer: The reaction order with respect to A is 'm'

Explanation:

Order of the reaction is the sum of the concentration of terms on which the rate of the reaction actually depends. It is equal to the sum of the exponents of the molar concentration in the rate law expression.

Elementary reactions the reactions for which the order of the reaction is same as its molecularity and order with respect to each reactant is equal to its stoichiometric coefficient as represented in the balanced chemical equation.

The given chemical equation follows:

$aA+bB\rightleftharpoons cC+dD$

The rate of the above reaction is given to us as:

$Rate=k[A]^m[B]^n$

In the above rate law expression, the order with respect to the reactants is not equal to the stoichiometric coefficients. Thus, it is not an elementary reaction.

Order with respect to reactant A = m

Order with respect to reactant B = n

Hence, the reaction order with respect to A is 'm'

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3 years ago

Is heated water more or less dense than the melted snow And rainwater

san4es73 [151]

Answer:

Heated water is more dense than melted snow because water as liquid is denser than ice. Ice floats on water, which means that it has less density than water. Heated water is warmer and more dense than melted ice.

Explanation:

7 0

3 years ago

In carbon monoxide, CO, the mass ratio is 1.00 g of carbon for every 1.33 g of oxygen. How many grams of oxygen will be combined

notsponge [240]

Answer : The mass of oxygen combined with 1.00 g of carbon in carbon dioxide will be, 2.66 grams.

Explanation :

Law of multiple proportion : It states that when two elements can combine to form two or more different compounds then the mass of one element compared to fixed mass of the other will always be in a ratio of small whole numbers.

As we are given that the mass of ratio of carbon and oxygen in CO is 1 gram and 1.33 gram.

Ratio of C and O in CO = 1 : 1

Ratio of C and O in CO₂ = 1 : 2

So, the mass of ratio of carbon and oxygen in CO₂ will be 1 gram and (2×1.33) 2.66 gram.

Thus, the mass of oxygen combined with 1.00 g of carbon in carbon dioxide will be, 2.66 grams.

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2 years ago

A solution is saturated in both nitrogen gas N2 and sodium iodide NaI at 50 degree Celsius. When the solution is cooled to 25 de

xxMikexx [17]

Answer:

b. some sodium iodide will precipitate out of solution

Explanation:

We know that for salts solubility decreases as the temperature of the solution decreases. So, NaI being a salt, its solubility will surely decrease when the temperature is cooled down to 25°C from 50°C.

Thus,the undissolved sodium iodide will precipitate out of the solution.

6 0

3 years ago

Would a hurricane be more likely to remain a hurricane if it reached point A or point B?

Andre45 [30]

B. because of the water

hope this helps :)

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3 years ago

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