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Q: 42.7 gram sample of potassium nitrate contains how many grams of potassium?
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A 42.7 gram sample of potassium nitrate (KNO3) contains how many grams of potassium?


How old is a sample of granite that contains 8 grams of radioactive potassium-40 and 56 grams of its nonradioactive decay products?

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What mass of potassium nitrate would be needed to produce a saturated solution of potassium nitrate in 50 grams of water at 313K?

More than 45,5 g KNO3.


How many molecules would be found in 427.4 grams of potassium nitrate?

Quite a few! 427.4 grams KNO3 (1 mole KNO3/101.11 grams)(6.022 X 1023/1 mole KNO3) = 2.546 X 1024 molecules of potassium nitrate -----------------------------------------------------------


What is the mass of potassium if a potassium sample contains 5 times the number of atoms as in 9.85 grams of gold?

The gram atomic mass of gold is 196.967 and that of potassium is 39.0983. Therefore, equal numbers of atoms of potassium are supplied by 39.0983/196.967 the mass of potassium compared with gold. 5 X 9.85 = 49.25. This contains the same number of gold atoms as 49.25(39.0983/196.967) or 9.78 grams of potassium contains of potassium atoms, to the justified number of significant digits (limited by the number "9.85", assuming that "5" is intended to be exact.)


How many moles in 284 grams of potassium?

Potassium has atomic number 39.1.Amount of K in 284g sample = 284/39.1 = 7.26molThere are 7.26 moles of potassium in a 284g sample.


How much potassium nitrate will dissolve in 50 grams of water at 50C?

65 degrees of potassium nitrate will remain in water while only 35% of water will still be detectable in the solute potassium nitrate


How many grams of potassium nitrate can we dissolve in ml of water at A degrees Celsius?

The solubility of poassium nitrate in water at 20 oC is 616 g/L.


A sample of 0.53 grams of an ore contains 5.4 percent silver How many milligrams of pure silver are in the sample?

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What is the maximum mass of potassium chloride that will dissolve in 100 grams of water?

the solubility of potassium nitrate in 70 degreesCelsius water is about 134 g KNO3 per 100 g water