calculate the mass of this sample:
1.05 * 10 to the power of 26 atoms of neon, Ne(g)
I know that I have to first divide by the avagadros constant, then once get the moles I need to multiply by the molar mass of neon to get the grams, I did that sevral times but I keep on getting the wrong answer... the correct answer is 3.5*10 to the power of 3.. Please show me the steps properly..:) Thanks!
The quick way of getting your answer is for you to show your work. That way we can see what you're doing wrong. This way we're working in the dark.
mols = 1.05E26/6.02E23 = ?
g = mols x molar mass = ?
That 3.5E3 grams is correct.
can u please tell me the number of molar mass i was using...
Let's not play "twenty questions". Show your work and I'll find the error.
To calculate the mass of a sample consisting of a certain number of atoms of a given element, you can follow these steps:
Step 1: Determine the number of moles
To find the number of moles, divide the given number of atoms by Avogadro's constant (6.022 x 10^23). In this case, the number of atoms is 1.05 x 10^26:
Moles = (1.05 x 10^26) / (6.022 x 10^23)
Moles ≈ 174.54 mol
Step 2: Calculate the mass
To determine the mass, you need to multiply the number of moles by the molar mass of neon. The molar mass of neon (Ne) is approximately 20.18 g/mol.
Mass = Moles x Molar Mass
Mass = 174.54 mol x 20.18 g/mol
Mass ≈ 3522.79 g
So, based on these calculations, the mass of the sample with 1.05 x 10^26 atoms of neon is approximately 3522.79 g.
It seems that you mentioned the correct answer is 3.5 x 10^3. However, the correct answer should be approximately 3522.79 g as calculated above. Please double-check if the provided answer is correct or if there was any mistake in recalling the answer.