Calculate the mass in grams of each sample.
= ______ g
Express your answer using two significant figures.
=________ g
Express your answer using two significant figures.
=________ g
Express your answer using three significant figures.
Calculate the mass in grams of each sample. 2.3×1022 SO2 molecules. = ______ g Express your...
calculate the mass in grams of each sample 9.55×10^19 CH4 molecules Express your answer using three significant figures
1) How many moles of water, H2O, contain 2.0×1022 molecules of water? Express the quantity in moles to two significant figures. Moles of water = ___________ mol 2) In the gaseous state, chlorine exists as a diatomic molecule Cl2 (Molar mass = 70.9 g/mol). Calculate the number of moles of chlorine present in 140 g of chlorine gas. Express the quantity in moles to three significant figures. Moles of chlorine gas = ___________ mol 3) Sodium hydroxide, NaOH, is a strong...
What is the mass, in grams, of 1.50 mol of iron (III) sulfate? Express your answer using three significant figures. How many moles of ammonium ions are in 6.935 g of ammonium carbonate? Express your answer using four significant figures. What is the mass, in grams, of 1.40 times 10^21 molecules of aspirin, C_9H_8O_4? Express your answer using three significant figures.
Calculate the mass of NH3, in grams, require to produce 96.5 moles of water. Express your answer using three significant figures. 2 NH3 • 2 CH4 • 3 O2--> 2 HCN + 6 Hao
B.) Determine the mass, in grams, of 4.23×10^24 O2 molecules. Express the mass in grams to three significant figures. C.) Determine the mass, in grams, of 15.2 mol CuSO4⋅5H2O. Express the mass in grams to three significant figures. D. ) Determine the mass, in grams, of 2.24×1024 molecules of C2H4(OH)2. Express the mass in grams to three significant figures.
Calculate the number of moles of HCN produced when 12.4 moles of Ozare consumed. Express your answer using three significant figures. 2 NH3 • 2 CH4 + 3O2--> 2 HCN + 6 H2O Calculate the number of moles of HCN produced when 12.4 moles of Ozare consumed. Express your answer using three significant figures. 2 NH3. 2 CH4 + 3O2--> 2 HCN + 6 Hao Calculate the mass of NO2, in grams, needed to completely react with 25.9 grams of...
QUESTION 26 What volume of scandium, in milliliters, will have a mass of 31.2 grams? The density of Scandium is 2.985 g/mL Report your answer in milliliters to three significant figures and do not include units. RE QUESTION 27 How many molecules of CH4 are in 39.2 grams of CH4? Report your number of molecules to two significant figures and do not include units NO QUESTION 28 6 + + Determine the theoretical yield of Fe2O3, in grams, if 20.4...
How many grams of F are in 1.64 * 1022 molecules of XeF6 if the atomic mass of Xe is 131.3 g/mole, F is 19.0 g/mole, and XeF6 is 245.3 g/mole (the final answer should have the correct number of significant figures)
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
1) How many grams are in 3.80 mol of sodium chloride (NaCl)? Express your answer numerically in grams. 2) How many water molecules are in a block of ice containing 2.25 mol of water (H2O)? Express the number of molecules numerically. 3) Calculate the mass of water produced when 2.98 g of butane reacts with excess oxygen. Express your answer to three significant figures and include the appropriate units. 4) Calculate the mass of butane needed to produce 69.9 g...