What is the mass in grams of one atom of copper?
447953
Copper's atomic mass is 63.55 grams/mole.  There are 6.02*10^23 copper atoms in mole of copper.  Thus, 1 atom Cu * 1 mol Cu/6.02*10^23 atoms Cu * 63.55 gCu/1 mol Cu = 1.056 * 10^-22 grams/atom Cu
163107
Ok, so gold's symbol is Au, and it has an atomic mass of about 196.967. Therefore, there are 196.967 grams of Au for each mole of Au.\n\n2.15 mol Au(196.967g Au / 1 mol Au)= 423.47905 grams of Au\n   (2.15 moles of gold is 423.47905 grams)\n\n2.15 mol Au(6.023*10^23atoms Au / 1 mol Au)=1.2943*10^24atom\n    (You multiply the number of moles by Avagadro's number to get the number of atoms present for the number of moles)\n\nTo sum it up:\n   2.15 moles of Au is also:  423.47905 grams of gold \n                                    and\n                              1.2943*10^24atoms of gold \n\nhope that helps
867590
Well, for a start your equation shows copper(II) sulphide, not sulphate, and your equation is wrong even then.  That makes a bit of a difference!\n\nLet us imagine that you've got the formula right, but the name wrong.\n\nThe equation is simply Cu + S ---> CuS\n\nThen 64g will give (64+32)g.\n\nThus 64g will give 96g.\n\nSo 64 x (200/96)g of Cu will give 200g of product.
95148
Actually, the mass of a proton is 1.00727664669 atomic mass units.\n\nAn atomic mass unit is defined such that Carbon 12 is exactly 12.  The carbon atom weighs less than 12 times the proton (because of nuclear binding energy).
70269
Cu+S+O*4+H*2+O\n63.55+32.07+16*4+1.008*2+16= 177.64 g/mol\nThat x (usually a dot) means that there is a water molecule attached to the CuSO4.  The water molecule's mass should be included in the molar mass calculation.
145088
its nice, because the molecular weight of a compound in grams = 1 mol of that compound. It makes it easy this way to figure out equations involving mol gram ratios. \n\nAlso, remember 6.022 x 10 to the 23rd power. \n\n1 mol X atoms - 6.022 x 10^23 X atoms\n6.022 x 10^23 X atoms = blank grams X\n1 mol X atoms - blank grams X
574253
1 slug = 8.78865485 × 10^27 atomic mass units\nthus\n2.8283 slugs = 2.48569525 × 10^28 atomic mass units
29071
Well, look in the periodic table of the elements and find the molecular weight. The molecular weight tells you how many grams are in one mole of that element. Once you know the amount of grams that correspond to 1 mole, you do the math.\nGood luck!
759463
Atomic masses\nCu - 63.546g/mol\nN - 14.007g/mol\nO - 15.999g/mol\n\nmolar mass of Cu(NO3)2 - 187.554g/mol\n\nno of moles in 2.35x10^3g = 12.53
233331
This is easy. Neon is a gas with atomic weight or mass of 20g, thus one mole of Neon weighs 20g. 20g could be gotten from the periodic table.
736123
atomic mass - atomic number(# of protons) = # of neutrons
1045065
ya , using the avogadro's number that is \n6.022 * 10 ^ 23\nits formula is \nno. of atoms if we have to find out\nthe no of atoms = given mass of the element /gram atomic mass * 6.022* 10 ^ 23
1021893
Weight of US coins:  \n\nPenny Standard weight 2.5 grams\nNickel Standard weight 5.0 grams\nDime Standard weight 2.268 grams\nQuarter Standard weight 5.670 grams\n\nSo, you would only need 1/5 of a nickel to weigh a gram.
593588
atomic mass of S = 32.07, 64 grams of S = 64/32.07 ~= 2 moles\natomic mass of Be = 9.01, 20 grams of Be = 20/9.01 ~= 2.2 moles\natomic mass of Na = 22.99, 25 grams of Na = 25/22.99 ~= 1.1 moles.\n\nThe Na sample has the fewest atoms, followed by K, then S, then Be.
161322
Nickel, number 28, symbolized Ni, atomic weight 58.6934 grams/mol.
1087435
well, first start with the molecular weight of gold (197 by definition), then divide it by the number of atoms in a mole (6.2*10^23), which gives you a mass of 3.18*10^-22 g.
895568
a mole is 6.022×10^23 particles.\n(1.45 * (10^24)) / (6.02200 * (10^23)) = 2.41 moles\n\nN = 14 atomic mass\nO = 16\n\n(14 * 2) + (16 * 5) = 108 g/mole\n(2.41 mole) * 108 (g / mole) = 260.28 grams