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The molar mass of an element is its atomic weight in grams. The atomic weight is on the Periodic Table. 1 mole C = 12.0107 g C. To calculate the number of moles in 80 g of C, do the following:
80 g C x (1 mole C/12.0107 g C) = 6.66 mole C = 7 mole C*
*This answer has been rounded to the proper number of significant figures. When multiplying or dividing, the answer is rounded to the fewest significant figures used in the calculation. 80 only has one significant figure.
Refer to the related link below concerning significant figures.
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How many moles are in 47.0 grams of Ag?
To find the number of moles in 47.0 grams of Ag (silver), divide the mass given by the molar mass of silver (107.87 g/mol). [ \text{Number of moles} = \frac{47.0 , \text{g}}{107.87 , \text{g/mol}} \approx 0.436 , \text{moles} ]
What is the total number of moles present in a 52.0 gram sample of NaN3 gram formula mass equals 65.0 mole?
To calculate the total number of moles in the 52.0 gram sample of NaN3, divide the given mass by the molar mass of NaN3. First, determine the molar mass of NaN3 by summing the atomic masses of its elements (sodium, nitrogen, and three times the atomic mass of nitrogen). Then, divide the mass of the sample by the molar mass of NaN3 to find the number of moles.
How much does one mole of U.S. Quarters weigh?
We usually are concerned with the gram-mole when we speak of moles. A gram-mole is Avagadro's number of molecules. Avagadro's number is chosen such that the grams in one mole of a substance corresponds to the molecular weight of that substance. Hydrogen gas has an atomic weight of about 2 and a gram-mole of hydrogen gas weighs about 2 grams. Iron has an atomic weight of about 55.845, so a gram-mole of iron weighs about 55.845 grams. If instead of molecules we used the quarter as the unit (defining a "Quarter-mole" as 6.022×1023 quarters, then we could calculate the weight of this new kind of mole. According to the US Mint, one quarter weighs about 5.670 g, so one "Quarter-mole" of quarters would weigh about 5.67x6.022x1023 grams or about 3.41x1024 grams or about 3.41x1021 kg or about 3.41x1018 metric tons. By comparison, the mass of the Earth is about 5.97x1024 kg or 5.97x1021 metric tons (about the same as 1748 "Quarter-moles"). Another way to look at it is to find the total gram-moles of material in one quarter. A quarter weighs 5.67 g and is 8.83% Nickel and 91.17% Copper. Nickel has an atomic weight of 58.6934 while Copper has an atomic weight of 63.546. This means a single quarter has 0.00853 gram-moles of Nickel and 0.081348 gram-moles of Copper. Together, a quarter has 0.089878 moles of metal. It would therefore take 1/0.089878 or about 11.12 quarters to contain one mole of metal. This many quarters would weigh about 63.09 grams.
If 87 balloons weighs 227 grams how much does one balloon weigh?
To find the weight of one balloon, divide the total weight of 87 balloons (227 grams) by the number of balloons: 227 grams / 87 balloons ≈ 2.61 grams Therefore, one balloon weighs approximately 2.61 grams.
If you place one staple on an electronic balance the balance still reads 0.0 grams However if you place 210 staples on the balance it reads 6.80 grams What is the mass of one staple?
The mass of one staple is 0.032 grams. This can be found by dividing the total mass of 210 staples (6.80 grams) by the number of staples (210).
- If the mass of 0.8 moles mixtures of NO and CH4 gases is 17 grams;I. The number of moles of NO is greater than the number of moles of CH4II. CH4 in the mix is 8 grams.III. NO in the mix is 0.3 mole?
I. False - Since both gases contribute to the total mass, the number of moles of NO does not necessarily need to be greater than the number of moles of CH4. II. True - If the total mixture mass is 17 grams and CH4 is 8 grams, then the remaining mass must be of NO. III. True - If the total moles of the mixture is 0.8, and CH4 is 0.5 moles (8g/16 g/mol), then the moles of NO would be the remaining 0.3 moles.
What is the total number of atoms in a sample of cocaine hydrochloride C17H22ClNO4 of mass 24.5 mg?
To find the total number of atoms in a sample of cocaine hydrochloride, you need to calculate the number of moles using the formula: moles = mass (in grams) / molar mass. Then, you multiply the number of moles by Avogadro's number (6.022 x 10^23) to get the total number of atoms.
If C02 is M equals 44 but you have 12 moles of that do you do 44 x 12?
To find the total mass of 12 moles of CO2, you would multiply the molar mass of CO2 (44 g/mol) by the number of moles (12 moles). This gives: 44 g/mol x 12 mol = 528 grams. Therefore, the total mass of 12 moles of CO2 would be 528 grams.
What is the total mass in grams of 0.75 mole of SO2?
To find the total mass of 0.75 moles of SO2, you need to calculate the molar mass of SO2 and then multiply it by the number of moles. The molar mass of SO2 is approximately 64.06 g/mol. Therefore, the total mass of 0.75 moles of SO2 is 0.75 mol * 64.06 g/mol = 48.045 grams.
How many grams would be in four 4 moles of nitric acid HNO3?
The molar mass of nitric acid (HNO3) is 63.01 g/mol. To find the total grams in 4 moles, you would multiply the molar mass by the number of moles: 63.01 g/mol x 4 mol = 252.04 grams. So, there would be 252.04 grams in four moles of nitric acid (HNO3).
The total number of calcium atoms in 80.0 grams of calcium is?
The molar mass of calcium is 40.08 g/mol. To determine the number of moles in 80.0 grams, divide 80.0 g by 40.08 g/mol to get 1.998 moles. Since 1 mole contains 6.022 x 10^23 atoms, the total number of calcium atoms in 80.0 grams is approximately 1.20 x 10^24 atoms.
How many grams atoms are in 100 of sulfur?
The molar mass of sulfur is approximately 32 grams per mole. Therefore, 100 grams of sulfur would contain approximately 3 moles of sulfur atoms (100 grams / 32 grams/mole). To find the number of atoms, you would then multiply the number of moles by Avogadro's number (6.022 x 10^23 atoms/mole) to get the total number of sulfur atoms in 100 grams.
How many grams are in 44.3 moles of Xenon?
To convert moles to grams, you need to use the molar mass of Xenon, which is 131.3 g/mol. Multiplying 44.3 moles by the molar mass gives you a total of 5812.59 grams of Xenon.
There are 2 grams of H2 gas in a fixed volume container at 273 C. 16 grams of He gas isadded to the container and the temperature is raised to 819 C. So what is the ratio of finalpressure to initial pressure?
The ideal gas law, (PV = nRT), can be used here. The initial pressure is proportional to the initial number of moles, and the final pressure is proportional to the total number of moles. Therefore, the ratio of final pressure to initial pressure is the ratio of the total number of moles of gas at the final conditions to the number of moles initially in the container.
What is the total number of atoms in 3.5 moles of calcium?
The total number of atoms in 3.5 moles of calcium is 21,0774929995.10e23.
What is the total mass and grams of 0.75 mole of SO2?
The molar mass of SO2 is approximately 64.07 g/mol. To find the mass of 0.75 moles of SO2, you would multiply the number of moles by the molar mass: 0.75 moles x 64.07 g/mol = 48.05 grams Therefore, the total mass of 0.75 moles of SO2 is 48.05 grams.
How do you convert moles into grams per liter?
Since both of them are per liter....then all you need to do is a one step conversion of moles into grams using the molar mass...essentially you are going to multiply the mol/L by the molar mass in grams of the given substance...
