The molecular weight of butane is 58.14 g/mol. Based on the number of grams of gas measured, how many moles is this? (moles = mass / molecular weight) Choose the closest answer. A. 5.5 * 10^-1 moles 0.361g
B. 8.1 * 10^-4 moles
C. 6.2 * 10^-3 moles
D. 9.4 * 10^-2 moles
The molecular weight of butane is 58.14 g/mol. Based on the number of grams of gas...
The fuel used in many disposable lighters is liquid butane, C4H10. Butane has a molecular weight of 58.1 grams in one mole. How many carbon atoms are in 2.00 g of butane? Express the number of atoms to three significant figures.
How many moles of benzaldehyde (density d = 1.04 g/ml), (molecular weight mw = 106.12 g/mol) are required to react with 1.0 ml of acetone: (density d = 0.79 g/ml), (molecular weight mw = 58.08 g/mol)? 6. What is approximate theoretical yield for problem # 5 if you obtained 2.1 grams of dibenzylidene acetone (mw = 234.29 g/mol)?
C4H10(g)+O2(g)→CO2(g)+H2O(g). How many moles of butane gas, C4H10, react to produce 1.00 mol of water? How many moles of oxygen gas react to produce 1.00 mol of water?
Butane gas is compressed and used as a liquid fuel in disposable cigarette lighters and lightweight camping stoves. Suppose a lighter contains 3.87 mL of butane (d =0.579 g/mL). (a) How many grams of oxygen are needed to burn the butane completely? g 02 (b) How many moles of H2O form when all the butane burns? moles 10 (c) How many total molecules of gas form when the butane burns completely? * 10 (select) Ymolecules of gas (Enter your answer...
Be sure to answer all parts. Butane gas is compressed and used as a liquid fuel in disposable cigarette lighters and lightweight camping stoves. Suppose a lighter contains 5.10 mL of butane (d-0.579 g/mL). (a) How many grams of oxygen are needed to burn the butane completely? g 02 (b) How many moles of H2O form when all the butane burns?" moles H20 (c) How many total molecules of gas form when the butane burns completely? x 10 (rclect) molecules...
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...
Calculate the mass of oestrogen (molecular mass 270 g/mol) required to make 150 mL of a 5.5 mM solution. Select the appropriate units. HINT: First calculate amount (moles) based on the formula amount = c × V (you may have learned this formula as n = c × V; A = C × V) then convert moles to grams using g = mol x molecular mass
Given the data below, how many grams of NaCl would you expect to be formed in the reaction of excess HCl with the Na,CO3? The molar mass of sodium carbonate is 105.989 g/mol and the molar mass of sodium chloride is 58.443 g/mol. 83.000 mass of empty beaker (g) mass of beaker plus Na2CO3 (9) mass of Na2CO3 (9) 85.250 2.250 Select one: O a. 2.481 g O b. 3.308 g O c.4.962 g O d. 1.241 g You added...
Four grams of O2 gas (molecular weight 32 g/mol) is compressed from an initial state of Pi = 1.30×105Pa, Vi = 4.50 L to a final state of Pf = 1.10×105 Pa, Vf =1.9 L along a path that forms a straight line on a PV diagram. (a) What is the final temperature? (b) What is the work done on the gas?
If you have a sugar with a molecular weight of 309 g/mol, how many grams would you need to add to 127 mL of water to create a 248 mM solution?