Określ, ile gramów chlorku amonu NH4Cl należy rozpuścić w 300g wody w temperaturze 70oC, aby otrzymać roztwór nasycony.

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Explanation:

The translation of the question is:

Specify how many grams of NH₄Cl, ammonium chloride, should be dissolved in 300g of water at 70ºC to obtain a saturated solution.

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The file attached shows the graph with the solubility curves for a number of solutes in water.

There, I show you the solubility of a solution of NH₄Cl at 70ºC: it is about 62g of NH₄Cl per 100 grams of water.

Then, the amount of  NH₄Cl in 300g of water at that temperature is calculated using proportions:

explanation:

venn diagram is pictorial representation with of circles showing the relation between two finite sets or things. the intersection part of two circles conveys the relation present in between those sets or things.

here in the venn diagram of sand and salt two circles represent sand and salt. but the area falling under the intersection of these circle represents the mixture of sand and salt.

so, in a venn diagram the mixture will be placed in a middle that is in between the intersection of two circles.

the potential energy of the reactants is 200j.

from the energy diagram, the energy of the product formed is 350j; this means that, this reaction is an endothermic reaction, because it absorbs energy from its environment.