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How many molecules of LiCl are in a 127.17g sample?
To calculate the number of molecules of LiCl in a 127.17g sample, you first need to determine the number of moles of LiCl in the sample using the molar mass of LiCl (6.94g/mol for Li and 35.45g/mol for Cl). Then, you can use Avogadro's number (6.022 x 10^23) to convert moles to molecules.
How many grams does 5.60 x 1022 molecules of SiO2 weigh?
To find the mass, we divide by Avogadro's number to find the amount of moles. We then multiply the moles by the molar mass of the compound which is 60.08 grams. Doing all of this, we get a mass in grams of 5.59 grams.
How many moles of H20 are in 3.6 x 1024 molecules of H20?
divide this number by avagadros number to get moles. (5.16x1024)/(6.02x1023)=8.57mol of H2O as there are 3 atoms in each molecule there are 3x8.57=25.7 moles of atoms.
What is the coefficient shows in a chemical equation?
The number of molecules of reactants or products. For instance: 2 H2 + O2 > 2 H2O means that two molecules of hydrogen react with one molecule of oxygen to produce two molecules of H2O (water).
What is the number of moles in 100 g MgCO3?
Ah, isn't that a lovely question? To find the number of moles in 100 g of MgCO3, we first need to know the molar mass of magnesium carbonate (MgCO3). Then, we can use the formula: moles = mass / molar mass. Just like painting a happy little tree, it's all about following the steps and enjoying the journey to the answer.
How many moles of hydroxide are in 18.00 mL of 0.1123M NaOH?
Molarity = moles of solute/Liters of solution (18.00 ml = 0.018 Liters)0.1123 M NaOH = X moles solute/0.018 L= 2.021 X 10 -3 moles NaOH============================as all is one to one,2.021 X 10 -3 moles OH -==================
How do you calculate morality of 5.23 moles?
All morality is lost when destroying 77% of a mole
How many grams does 5.60 x 1022 molecules of SiO2?
To find the mass, we divide by Avogadro's number to find the amount of moles. We then multiply the moles by the molar mass of the compound which is 60.08 grams. Doing all of this, we get a mass in grams of 5.59 grams.
What is the importance of molecules?
Molecules can be a very important piece of information while dealing with moles or mass. For example, one can very easily convert molecules to moles to find the mass of a substance (this needs the # of molecules of the compound/element and the chemical formula). Also, the number of molecules can find moles and atoms through different equations.
How many molecules are in 10 grams?
A mole of water is about 18 grams or 18 milliliters of water.A mole of water has 6.022 x 10^23 water molecules. And 10.0 grams of has 3.345 × 10^23 water molecules. And there are 3 total atoms in water molecules, which is H2O. (3.34 × 10^23)*3=1.006 × 10^24 Which means that 1x10^24 atoms are in 10.0 grams of water.
What happens to the volume of a gas when the number of moles doubles ( all else held )?
When the number of moles of a gas doubles and all else is constant, then the volume also doubles.
How many moles of B in 20g of borax?
To calculate the number of moles in 20g of borax (Na2B4O7), we first need to find the molar mass of borax. By adding the atomic masses of all the elements in borax, we get a molar mass of approximately 201.22 g/mol. Then, we use the formula: moles = mass / molar mass. Substituting in the values, we find that there are approximately 0.10 moles of borax in 20g. Since there are four boron atoms in one molecule of borax, the number of moles of B (boron) would be 0.10 moles * 4 = 0.40 moles.
