a. 7.84 × 1026 molecules mol b. 1.56 × 1021 molecules mol c. 9.0 × 1024 molecules mol
a. 7.84 × 1026 molecules mol b. 1.56 × 1021 molecules mol c. 9.0 × 1024...
Calculate the mass (in grams) of each sample. A. 2.71×1021 molecules of SO3 B. 2.85×1024 molecules of H2O C. 4.35×1024 molecules of O3 D. 2.25×1021 molecules of CCl2F2
How many molecules are in 1.500 g of riboflavin, C17H20N4O6? A) 4.167 x 10-22 B) 2.400 x 1021 C) 1.066 x 1021 D) 1.067 x 1024 E) 3.400 x 1026
A) 3.91 x 1023 molecules B) 1.09 x 1021 molecules C) 1.96 * 1023 molecules D) 58.57 molecules E) 1.80 x 10-3 molecules 38) Which of the choices is the correctly balanced form of the following equation? C6H14(%) + O2(g) + CO2(g) + H20(1) A) 2C6H14() + 1902(g) 12C02(g) + 14H20(1) B) C12H28() + 380(g) 12C02(g) + 14H20(1) C) C6H14(4) + 190(g) 6CO2(g) + 7H2007 D) C6H14) + 1302(g) → 6CO2(g) + 7H20(1) E) C6H14() + 1902(g) 6CO2(g) + 7H20(1)...
Question 19 (1 point) How many molecules of CH4 are in 48.2 g of this compound? OA) 2.00 x 1023 OB) 1.81 x 1024 C) 5.00 10-24 D) 4.00 E) 4.64 x 1026
34. How many molecules of O2 are there in 6.8 mol of O2? a. 218 b. 1.1 x 10-23 C. 4.1 x 1024 d. 4.71 e. 8.9 x 1022
explanation please
8) How many molecules are present in 4.25 mol of CC14? A) 9.26 x 1024 molecules (B)2.56 x 1024 molecules C) 653.69 molecules D) 153.81 molecules E) 3.69 x 10-23 molecules 9) How many molecules are there in 3.00 moles of NH3? A) 1.00 molecules B) 3.00 molecules C) 17.00 molecules D) 1.20 x 1024 molecules E1.81x 1024 molecules 10) How many molecules are present in 3.25 mol of C2H60? A) 3.25 molecules B) 46.0 molecules C) 1.85...
Gas is contained in a 10.0 L vessel at a temperature of 40.0°C and a pressure of 10.0 atm. (a) Determine the number of moles of gas in the vessel. (b) How many molecules of gas are in the vessel? (a) 3.89 mol; (b) 2.34 * 1022 molecules (a) 2.19 mol; (b) 2.34 x 1024 molecules (a) 3.89 mol; (b) 2.34 x 1024 molecules (a) 3.89 mol; (b) 5.24 x 1024 molecules
10. 1.2044 X10 Xm = 2 n How many moles are in 1.2044 x 1024 molecules? 2.0000 moles 2 moles 4 moles d. 2.000 molecules 104 X mol 6,022xus Strong acids tend to do what? Donate hydroxide ions Donate H* ions in solution Produce OH ions 12. _amount of compared to stock solutions. Dilute solutions contain a small, solute small, solution large, solute C. 13. amount of solute compared to dilute solutions. Stock solutions contain a a larger solution smaller
1. Choose the correct answer(s) to complete the following statement: One mole of oxygen (O2) gas is equivalent to _____________________. I. 6.022 × 1023 molecules of oxygen II. 6.022 × 1023 atoms of oxygen III. one mole of oxygen atoms IV. two moles of oxygen atoms 2. 50.0 g of Cl2 contains ________ mol Cl2. a. 0.705 b.1.41 c. 4.24 × 1023 d. 1775 e. 50.0 3. The number of grams in 0.350 mol of Na is a. 11.0. b....
45) How many iron atoms are present in 0.552 mol of iron? A) 27.98 y old sobilo B) 2.798 x 1024 bolsoba C) 55.85 D) 6.02 x 1023 E) 3.32 x 1023