How many Oxygen atoms are there in 78.1 g Na2C2O4
A)1.40 x 10^24
B)3.51 x 10^23
C)2.52 x10^28
D)3.87 x10^-24
How many Oxygen atoms are there in 78.1 g Na2C2O4 A)1.40 x 10^24 B)3.51 x 10^23...
How many atoms are in 237g of Si A. 1.41 x 10^-23 B. 5.10 x 10^24 C. 8.46 D. 1.10 x 10^-20
COD 15:16 1/24 How many atoms are in 2.52 g of helium? Select the correct answer below. O 2.41 x 1024 atoms 2 9.57 * 102 totris O 1.62 x 10% atoms 3.79 x 10 atoms FEEDBACK وان ااااااااااات
a.) how many moles of iron is 66.8 g of Fe? __________________ mol Fe b.) How many grams of iron is 4.89 x 10-2 mol Fe? __________________ g Fe c.) How many atoms are present in 0.950 mol of uranium? _________________ x10 _________________ U atoms d.) 3.84 × 106 sulfur atoms is how many moles? __________________ x10 _______________ moles
5a) 25.0 g of C are how many moles? (2.08 moles) 24 atoms of C) 25.0 g of C are how many atoms of C? (1.25 x 10 -1 g) 20 moles of Ag are how many atoms of Ag? (6.456 x 10 -3 b) 1.072 x 10 moles of Ag are how many grams? (1.156 x 10 -3 1.072 x 10 atoms) -10 g) -12 moles) 12 c) 2.408 x 10 molecules of Cl are how many grams? (2.835...
How many oxygen atoms are there in 95g of barium chromate? How many oxygen atoms are there in 95 g of barium chromate? Calculate the percent composition of oxygen by mass in
A B C D 9.03 x 10 24 9.03 x 10 21 none of the above How many atoms of nitrogen are in 1.5 9.03 x 10 22 9.03 x 10 23 moles? 2.3 x 10 22 2.3x 10 21 2.3 x 10 23 none of the above How many atoms of nitrogen are in 3.8 moles? How many atoms of nitrogen are in 2.1 moles? How many atoms of nitrogen are in 4.8 moles? How many atoms of nitrogen...
1) How many oxygen atoms are there in 296.0 g of Cr(PO4)2 2) ? a) b) 7. How many Oxygen atoms are there in 29 gen atoms are there in 296.0 g of Cr(PO4)2 ? show work (6 pts) consider the following balanced chemical equation when answering the following questions: 2 Cs3PO3 + 3 BaBr2 ------ ----→ 6 CsBr + Ba3(PO3)2 a) How many mols of CsBr should be produced if 8.68 g of BaBr2 are used in the reaction?...
How many atoms are in 2.402 g of Carbon? 1.45 x 1023 atoms 1.204 x 1023 atoms 0.200 atoms 1.204 x 10-23 atoms
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?
1. 24.8 g of oxygen contains a. 9.33 x 1023 oxygen atoms b. 50 amu c. none of these d. 1.49 x 1025 oxygen molecules e. 1.55 mol of oxygen molecules 2. 1.2 moles of oxygen atoms represent a. 0.4 g b. 0.72 x 1024 atoms c. 1.9 x 101 atoms d. 1.0 x 102 g e. none of these