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1 mole of He-4 isotope weight about 4 g

So 1.5 mole of He-4 isotope weight about 6 g

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What is the mass of 15 moles of tungsten?

The mass of 15 moles of tungsten is 2.757,6 g.


How many atoms are in 3 moles of potassium nitrate?

To calculate the number of atoms in 3 moles of potassium nitrate (KNO3), you use Avogadro's number, which is 6.022 x 10^23 atoms/mol. First, calculate the molar mass of KNO3 (101.1 g/mol) then multiply that by 3 to get the total mass in grams. Next, divide the total mass by the molar mass to get the number of moles, and finally multiply the number of moles by Avogadro's number to get the number of atoms. For 3 moles of KNO3, there are approximately 5.4 x 10^24 atoms.


Calculate the total number of atoms in 15 g CaH2?

To calculate the total number of atoms in 15 g of CaH2, we first need to find the number of moles of CaH2 using its molar mass. The molar mass of CaH2 is 42.08 g/mol. Therefore, 15 g of CaH2 is equal to 15/42.08 = 0.356 moles of CaH2. Since each mole of CaH2 contains 3 atoms (1 calcium atom and 2 hydrogen atoms), there are 0.356 * 3 = 1.068 moles of atoms in 15 g of CaH2. This is equivalent to 1.068 * 6.022 x 10^23 = 6.44 x 10^23 atoms.


what is the volume occupied by 15 g of helium?

The volume occupied by 15 g of helium can be calculated using the ideal gas law equation. First, convert grams to moles using the molar mass of helium. Then, apply the ideal gas law equation, V = nRT/P, where n is the number of moles, R is the ideal gas constant, T is the temperature, and P is the pressure.


How many moles of aluminum are present in an aluminum cylinder with a mass of 15 g?

To determine the number of moles of aluminum present, we need to first determine the molar mass of aluminum, which is approximately 26.98 g/mol. We can then use the formula: moles = mass / molar mass. Plugging in the values, we get moles = 15 g / 26.98 g/mol ≈ 0.56 moles of aluminum.


How many moles are equal to 9.03 x 1024 atoms of mercury hg?

To find the number of moles, divide the number of atoms by Avogadro's number (6.022 x 10^23 atoms/mole). 9.03 x 10^24 atoms / 6.022 x 10^23 atoms/mole ≈ 15 moles. Therefore, 9.03 x 10^24 atoms of mercury is equal to approximately 15 moles.


How many moles of atom is contained in 15 gram of zinc?

To find the number of moles of zinc in 15 grams, divide the given mass by the molar mass of zinc. The molar mass of zinc is approximately 65.38 g/mol. Therefore, 15 grams of zinc is equal to 0.23 moles of zinc.


What is a noble gas with a mass of less than 15?

Helium


How many moles of Na are in 15 g of NaCl?

To find the number of moles of Na in 15 g of NaCl, you first need to calculate the molar mass of NaCl, which is 58.44 g/mol. Since Na makes up 39.34% of the molar mass of NaCl, you can calculate the moles of Na as (15 g / 58.44 g/mol) * 0.3934 = 0.255 moles of Na.


What is the type of conversion factor needed in a problem in which mass is being converted to moles?

moles to atoms you multiply the number of moles by avogadros number ex: 1.32 mol x (6.022 x 10^23 atoms)/mol mass to atoms you multiply the mass (in grams) times the molar mass of the element or compound (ex: N 14.01 mols/gram) then times avogadros number once you have the moles. ex: 45.6 g N x (14.01 mol/gram) x (6.022 x 10 ^23 atoms/mol) if it's a compound instead of an element, find the molar mass of the compound (the molar masses of all the elements in it added up) and multiply by it. ------------------------- Actually you are wrong, from mass to atoms you need to take the initial mass divide by the gram of the element that you are doing and multiply by the Avogadros number


How many moles of Ni are in kg of nickel sulfate?

(NH4)2SO4 so 2 N, 8 H, 1 S, 4 O = 15 total In one mole(unit) of any substance there are 6.022 x 1023 particles. This number is known as Avogadro's number. So for ammonium sulfate there would be 15 times this number = 9.033 x 1024. However, 1 molecular unit of ammonium sulfate contains 15 atoms.


How many moles of O2 are in one mole of H3PO4?

Actually H3PO4 is a molecular formula referring to the compound we know as Phosphoric acid. It doesn't indicate number of moles of H3PO4. But the number of moles can be found out if the amount in mass or some other measurable quantity(e.g. conc. in solution) is given. The molar mass(mass of 1 mole) of H3PO4 is 98 grams. So if mass is given then it can be converted to grams and dividing by molar mass(i.e 98) we get number of moles. moles of H3PO4 =(mass of H3PO4 in grams)/98. 1 mole of H3PO4 has ->3 moles of H atoms. ->1 mole of P atoms. ->4 moles of O atoms. ( 1 mole=6.0225 *1023 units)