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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.
What else can I help you with?
How many moles of phosphorus atoms are in a 100 g sample of phosphorus?
The gram atomic mass of phosphorus is 30.9738, and by definition, a mole of such atoms contains Avogadro's Number of atoms. Therefore, 100 g of phosphorus contains 100/30.9738 or 3.23 moles, to the justified number of significant digits.
How many moles of phosphorus atoms are in 100 grams of P4S10?
To find the number of moles of phosphorus atoms in 100 grams of P4S10, we first need to determine the molar mass of P4S10 which is 284.26 g/mol. Next, we calculate the number of moles of P4S10 in 100 grams by dividing 100 g by the molar mass to get 0.352 moles of P4S10. Since there are 4 phosphorus atoms in each P4S10 molecule, there are 0.352 moles x 4 = 1.41 moles of phosphorus atoms in 100 grams of P4S10.
The molarity of a solution of 5.0 g of KCl in 100 mL of solution is?
To find the molarity, first calculate the number of moles of KCl using its formula weight. The formula weight of KCl is 74.55 g/mol. So, for 5.0 g of KCl, the number of moles is 5.0 g / 74.55 g/mol = 0.067 moles. Then, divide the moles by the volume of the solution in liters (100 mL = 0.1 L) to find the molarity: 0.067 moles / 0.1 L = 0.67 M.
What is the number of moles present in 32.5 g aluminum chloride?
To find the number of moles, you need to divide the mass of the substance by its molar mass. The molar mass of aluminum chloride (AlCl3) is 133.34 g/mol. So, for 32.5 g of aluminum chloride, the number of moles would be 32.5 g / 133.34 g/mol = 0.243 moles.
How many moles are in 74 g of KCl?
To find the number of moles in 74 g of KCl, you first need to calculate the molar mass of KCl. The molar mass of KCl is approximately 74.55 g/mol. Then, divide the given mass by the molar mass to get the number of moles: 74 g / 74.55 g/mol ≈ 0.993 moles.
How many moles of phosphorus atoms are in a 100 g sample of phosphorus?
The gram atomic mass of phosphorus is 30.9738, and by definition, a mole of such atoms contains Avogadro's Number of atoms. Therefore, 100 g of phosphorus contains 100/30.9738 or 3.23 moles, to the justified number of significant digits.
HOW MANY moles of mg atom are there in 100 gm of mg?
The atomic weight of magnesium is 24.31; therefore, the number of moles in 100 gm is 100/24.31 = 4.11, to the justified number of significant digits.
How many moles of sodium borohydride are used in 100 mg?
To calculate the number of moles of sodium borohydride in 100 mg, you need to know the molar mass of the compound, which is 37.83 g/mol. First, convert 100 mg to grams (0.1 g), then divide by the molar mass to get the number of moles, which is approximately 0.0026 moles.
How many moles of each element are present in a 100 g sample of deoxyribose?
Deoxyribose has the chemical formula C₅H₁₀O₃. In a 100 g sample of deoxyribose, the number of moles can be calculated using its molar mass, which is approximately 134.13 g/mol. Thus, the number of moles of deoxyribose is about 0.746 moles. Consequently, there would be 0.746 moles of carbon, 1.492 moles of hydrogen, and 0.746 moles of oxygen in the sample.
How many moles of phosphorus atoms are in 100 grams of P4S10?
To find the number of moles of phosphorus atoms in 100 grams of P4S10, we first need to determine the molar mass of P4S10 which is 284.26 g/mol. Next, we calculate the number of moles of P4S10 in 100 grams by dividing 100 g by the molar mass to get 0.352 moles of P4S10. Since there are 4 phosphorus atoms in each P4S10 molecule, there are 0.352 moles x 4 = 1.41 moles of phosphorus atoms in 100 grams of P4S10.
How many moles of Al2S3 are in 100 g of Al2S3?
100/150.158 is 0.666 moles
The molarity of a solution of 5.0 g of KCl in 100 mL of solution is?
To find the molarity, first calculate the number of moles of KCl using its formula weight. The formula weight of KCl is 74.55 g/mol. So, for 5.0 g of KCl, the number of moles is 5.0 g / 74.55 g/mol = 0.067 moles. Then, divide the moles by the volume of the solution in liters (100 mL = 0.1 L) to find the molarity: 0.067 moles / 0.1 L = 0.67 M.
How many moles are in 100g of KMnO4?
1 mol = 118.94 1 mol / 118.94 = 1.70 / x G = 202.10g
How many molecules are in 100g of H20?
To find the number of molecules in 100 grams of water (H₂O), first calculate the number of moles. The molar mass of water is approximately 18 g/mol, so 100 g of water is about 5.56 moles (100 g ÷ 18 g/mol). Since one mole contains Avogadro's number of molecules (approximately (6.022 \times 10^{23})), the total number of molecules in 100 g of H₂O is approximately (3.34 \times 10^{24}) molecules (5.56 moles × (6.022 \times 10^{23}) molecules/mole).
What is the number of moles of argon in 607 g of argon?
the equation is Xg multiplied by the moles/grams of X = moles of X (the grams cancel leaving you with moles) 607g Ar x 1 mole/ 39.95g = 15.19 moles
How is a number of moles of an element determined from a known mass?
The number of moles is mass in g/molar mass in g.
If you have g of beryllium how many moles is this equivalent to?
The formula is: number of moles = g Be/9,012.
