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To find out how many 25-gram portions are in 4 kilograms, first convert 4 kilograms to grams: 4 kg is 4000 grams. Then, divide 4000 grams by 25 grams: 4000 ÷ 25 = 160. Therefore, there are 160 portions of 25 grams in 4 kilograms.
To find what percentage 500 grams is of 2 kg, first convert 2 kg to grams, which is 2000 grams. Then, divide 500 grams by 2000 grams and multiply by 100 to find the percentage: (500 / 2000) × 100 = 25%. Therefore, 500 grams is 25% of 2 kg.
To find how many times 25 grams is contained in 4 kilograms, first convert 4 kilograms to grams: 4 kg = 4000 grams. Then, divide 4000 grams by 25 grams: 4000 g ÷ 25 g = 160. Therefore, 25 grams is contained in 4 kilograms a total of 160 times.
To convert grams to kilograms, you divide the number of grams by 1,000. Therefore, 25 grams is equal to 0.025 kilograms (25 grams ÷ 1,000 = 0.025 kg).
There are 0.025 grams in 25 micrograms (mcg). This is calculated by recognizing that 1 microgram is equal to 0.000001 grams. Therefore, to convert 25 mcg to grams, you multiply 25 by 0.000001, resulting in 0.025 grams.
The molar mass of sodium hydroxide (NaOH) is approximately 40 grams/mol. To find the mass of 25 moles of NaOH, you would multiply the number of moles by the molar mass: 25 mol * 40 g/mol = 1000 grams. So, the mass of 25 moles of sodium hydroxide is 1000 grams.
25 moles of sulfur dioxide contain 600 grams of oxygen. Each mole of SO2 contains 2 moles of oxygen, and the molar mass of O is 16 g/mol. So, 25 moles x 2 moles = 50 moles of O, which is 50 moles x 16 g/mol = 800 g of O.
21.95%
To calculate the number of moles in 25 grams of UF6, first determine the molar mass of UF6 (uranium hexafluoride) by adding the atomic mass of uranium (238.03 g/mol) to six times the atomic mass of fluorine (19.00 g/mol). This gives a molar mass of 238.03 + (6 * 19.00) = 352.03 g/mol. Next, divide the given mass of 25 grams by the molar mass to find the number of moles: 25 g / 352.03 g/mol ≈ 0.071 moles. Therefore, there are approximately 0.071 moles in 25 grams of UF6.
Sr is 87.6g/mol, and 25/87.6 = 0.285 moles.
800 g oxygen are needed.
4.25 grams. .050 M = .050 mol/1 L 5.0 L x .050 mol/L (cancel out L to get mol as a unit)= .25 mol Atomic mass of Ammonia (NH3)= 17 g/mol .25 mol x 17 g/mol (cancel out mol to get g as a unit)= 4.25 g
To find the mass of 1.20x10^25 atoms of sulfur, you need to calculate the molar mass of sulfur and then convert the number of atoms to moles. The molar mass of sulfur is 32.06 g/mol. Once you have the number of moles, you can multiply it by the molar mass to find the mass of 1.20x10^25 atoms of sulfur.
The molar mass of tungsten (W) is approximately 183.84 g/mol. To find the mass of 6.64 mol of tungsten, you would multiply the number of moles by the molar mass: 6.64 mol W x 183.84 g/mol = 1220.3 g of tungsten.
The molar mass of calcium carbonate (CaCO3) is 100.09 g/mol. To find the mass of 0.250 mol of calcium carbonate, you would multiply the number of moles by the molar mass: 0.250 mol x 100.09 g/mol = 25.02 grams of calcium carbonate.
The density of sulfur in grams/cm3 is 2.070. (not at twenty five degrees Celsius)
To find the mass in grams of 1.20x10^25 molecules of ammonia (NH3), you first calculate the molar mass of NH3 (17.031 g/mol). Then, divide the given number of molecules by Avogadro's number (6.022x10^23 molecules/mol) to find the number of moles, and finally, multiply the number of moles by the molar mass to get the mass in grams, which will be approximately 4.08x10^2 grams.