How many atoms are present in a 84.9 μmol sample of pure iridium?
How many atoms of 12C are there in a 3.50 grams of a pure sample of this particular isotope?
How many hydrogen atoms are there in a 1 gram sample of pure hydrogen?
How many grams of carbon atoms are present in a sample of C3H8 if there are 8.70 moles of hydrogen atoms in the sample? Enter your answer with the correct number of sig figs.
218 g of (NH4)2CO3 is present. how many oxygen atoms are present? how many hydrogen atoms are present? how many total atoms are present?
How many F atoms are present in a 39 grams sample of calcium floride A 2 atoms b 1.2*e24 atoms c 9.0*e23 atoms d 6.0*e23 atoms e 3.0*e23 atoms
1a. How many carbons atoms are present in but-2-ene? 1b. How many carbons atoms are present in 2-methyl butane? Thank you.
A. How many moles of silicon dioxide, SiO2 , are present in a sample that contains 3.61 moles of oxygen atoms? B. How many moles of oxygen atoms are present in a sample that contains 2.95 moles of SiO2 ? C. How many moles of sulfur atoms are present in a sample that contains 1.92 moles of disulfur decafluoride, S2F10 ? D.How many moles of S2F10 molecules are present in a sample that contains 6.13 moles of sulfur atoms? E....
a) How many atoms are in 92.2 g of pure aluminum? b) How many grams of carbon, C, would contain the same number of atoms as 39.948 g of argon, Ar? c) How many grams of S are in 785 g of SO2?
How many C atoms are present in the sample of C3H8 with mass 4.41 g? Avogadro’s number is 6.022 × 1023. Answer using scientific notation and to three significant digits.
estion 2 of 3 > How many atoms are in 4.66 mol of pure aluminum? Al atoms