Salty snacks like peanuts and pretzels can often be found for free at gatherings where beverages are for sale. Vendors hope that
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Considering the definition of molarity and molar mass, the mass of NaF required is 3.771 grams.
<h3>Definition of molarity</h3>Molar concentration or molarity is a measure of the concentration of a solute in a solution and indicates the number of moles of solute that are dissolved in a given volume.
The molarity of a solution is calculated by dividing the moles of solute by the volume of the solution:
Molarity is expressed in units .
The molar mass of substance is a property defined as its mass per unit quantity of substance, in other words, molar mass is the amount of mass that a substance contains in one mole.
<h3 /><h3>Mass of NaF required</h3>In this case, you know:
- molarity= 0.15 M= 0.15
- number of moles= ?
- volume= 600 mL= 0.6 L
Replacing in the definition of molarity:
Solving:
0.15 × 0.6 L= number of moles
<u><em>0.09 moles= number of moles</em></u>
The molar mass of NaF is 41. 9 g/mol. So, you can apply the following rule of three: If by definition of molar mass 1 mole of the compound contains 41.9 grams, 0.09 moles of the compound contains how much mass?
<u><em>mass= 3.771 grams</em></u>
Finally, the mass of NaF required is 3.771 grams.
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The number of hydrogen atoms is twice the number of oxygen atoms in ribose.
<h3>What is Ribose?</h3>This is a sugar and a component of the ribonucleotides from which RNA is built. It has the formula C₅H₁₀O₅.
Ribose is a carbohydrate with the formula C₅H₁₀O₅. This molecule is a pentose monosaccharide which has a linear form . The hydroxyl groups lie on the same side in the form of Fischer Projections.
The number of hydrogen atoms is double the number of oxygen atoms. The ribose sugar is found in the RNA.
It is the genetic material which is found in some organisms that carry information from one generation to another.
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