5. How many moles are in 19 grams of KNO,?

Explanation:

n= m\M

n is moles

m is mass

M is molar mass

m=19 grams

M of KNO= 69g/mol

now substitute;

n= 19\69

n=0.275 moles

warm front forms when a moist, warm air mass slides up and over a cold air mass. as the warm air mass rises, it condenses into a broad area of clouds. a warm front brings gentle rain or light snow, followed by warmer, milder weather.

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