150
A single atom of carbon contains 6 protons and 6 neutrons in its nucleus, surrounded by 6 electrons. Therefore, there are 6 atoms in a carbon molecule.
6.55 * 1024 atoms = ? moles of carbonTake the number of atoms and divide it by Avogrodos constant (6.02 * 1023). Note that if you are looking to have your units cancel, multiply the number of atoms times 1 mole and divided by atomic mass. But if you know why it is just multiplied by one, there is no reason to put it in the formula.6.55 * 1024 atoms / (6.02 * 1023) = 10.9 molescarbon
To find the number of moles of CaCl2, first calculate the molar mass of CaCl2: Ca: 40.08 g/mol Cl: 35.45 g/mol (x2 since there are two Cl atoms) Total molar mass: 40.08 + 35.45(2) = 110.98 g/mol Next, calculate the number of moles: 2.41 x 10^24 formula units / Avogadro's number (6.022 x 10^23) = 4 moles of CaCl2.
To convert atoms to moles, you divide the number of atoms by Avogadro's number (6.022 x 10^23). So, 2.80 x 10^24 atoms of silicon would be 4.65 moles.
Your exponent is missing. To convert number of ___ (electrons, protons, atoms, molecules, etc) to moles of that substance, you must divide the number of ____ by Avogadro's constant (or Avogadro's number, commonly abbreviated to N_A (_A meaning the A is a subscript). Wikipedia lists the number as 6.02214179(30) e23 (e23 is a shortform of scientific notation, where the e refers to "times ten to the power of"). The brackets at the end of the decimal are the area of uncertainty. Since Avogadro's constant is defined as the number of carbon atoms in exactly 12 grams of the carbon-12 isotope, we cannot affix a specific number - there is no way (as far as I know) of counting individual atoms, accurately measuring mass to the point where a 1 atom difference is detectable, or ensuring the sample being weighed is nothing but carbon-12. Most chemistry classes in high school and undergraduate university/college classes will accept 6.022e23 as an acceptable approximation; add more decimals as required - if you're doing original research you should probably include the number specified in a more reliable source than wikipedia.
1.08 x 10^25
1,400,000,000,000,000,000,000,000
0.00000000000000000000000167
2.44 times 10 to the 24th power
5,970,000,000,000,000,000,000,000 kilograms.
Ten to the 24th power, 1024, is called ten to the 24th power.
2.44 x 1024 = 2440000000000000000000000
2 to the 24th power is 16,777,216.
To find the number of moles, divide the number of molecules by Avogadro's number, which is (6.022 \times 10^{23}) molecules/mol. (3.75 \times 10^{24}) molecules of carbon dioxide is equivalent to 3.75 moles of carbon dioxide.
1.292557881
The answer is 6,227 moles.
424 = 281474976710656