Asolid mixture consists of 44.2g of kno3 (potassium nitrate) and 7.8g of k2so4 (potassium sulfate). the mixture is added to 130. g of water. if the solution described in the introduction is cooled to 0 ∘c, what mass of kno3 should crystallize? (assume kno3 has a solubility of 14 g solute/ 100 g water

26 g left undisolved  which gives you the amount that would crystallize

Explanation:

Step 1: Data given

A solid mixture consists of 44.2g of KNO3 (potassium nitrate) and 7.8g of K2SO4 (potassium sulfate).

The mixture is added to 130. g of water

KNO3 has a solubility of 14 g solute/ 100 g water

Step 2: Calculate mass of KNO3 in 130 grams of water

X g of KNO3/ 130 g water= 14 g of KNO3/ 100 g water    

X = 14*1300/100 = 18.2

X= 18.2 g (this is the amount of solute that dissolves at 0 degrees C in 130 g water)  

Step 3: Calculate amount KNO3 that will crystallize

Of the 44.2g of KNO3 in 130 g of water at 0 degrees celsiusonly 18.2 can dissolve, this means:

44.2g - 18.2g = 26 g left undisolved  which gives you the amount that would crystallize

answer: lol

explanation:

lol

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance