1. How many anions are there in 2.50 g of MgBr2?
2. What is the mass of 0.500 mol of dichlorodifluoromethane, CCl2F2?
1. How many anions are there in 2.50 g of MgBr2? 2. What is the mass...
1. How many moles are contained in 2.50 grams of benzoic acid? Molar mass of benzoic acid: 122.12 g/mol 2. How many mL are in 0.5 grams of cyclohexene? Density of cyclohexene is 0.809 g/ml 3. How many moles are in 250 mL of 2 M sodium hydroxide? 4. If 5.0 mL of 2-methyl-2-butanol are allowed to react with an excess of concentrated hydrochloric acid, what is the maximum mass of 2-chloro-2-methylbutane that can be obtained? 5. An acid-catalyzed dehydration...
6. 48.6 mL of a 0.100 M NaOH solution is needed to react with 20.0 mL of an unknown concentration of HCl solution. What is the concentration of the HCl solution? 7. A colorless liquid has a composition of 84.1% carbon and 15.9% hydrogen by mass. Determine the empirical formula. Also, assuming the molar mass of this compound is 114.2 g/mol, determine the molecular formula of this compound. 8. What is the concentration of HCl in the final solution when...
Copper(t) bromide reacts with magnesium metal: 2 CuBr + Mg + 2 Cu + MgBr2 If 0.253 moles of magnesium react in this way, a. How many grams of CuBr are consumed? (1 point) . 143.45 g/mol 0,50cmol x 143.45 g/mol 0.295 mol cu Br x2-0.50 mo = 72.58 grams b. How many grams of Cu can be produced? (1 point), 2x 0.253 moly. 63.596 g/mol = 3 Zoltaron
how many mmoles of oxalate, C2O4^2- ? Mass of sample - What was the initial mass of the weighing paper in Trial #1? 0.2000 g Previous Answers ✓ Correct Part B Mass of sample - What was the final mass of the weighing paper and sample in Trial #12 0.3000 g Previous Answers ✓ Correct Part C Mass of sample - What is the mass of the sample in Trial #12 0 1100 g We were unable to transcribe this...
How many moles of glucose are present in 50.0 grams of solution that is 2.50% by mass glucose (C6H1206)? Molar mass of C6H1206 = 180.16 g/mol a. 11.1 moles 6.225 moles 6.6.94 x 10-3 moles d. 1.25 moles e. 0.800 moles
You want to make 850.0 mL of a 2.0 M solution of MgBr2. a. How many g of MgBrą would be needed? b. How many mL of a 9.5 M stock solution would be needed?
How many copper (Cu) atoms are in 2.04 moles of copper? What is the mass of 0.500 mol of manganese (Mn)?
14. A hummingbird of mass 2.50 g consumes 65.0 ml of O, (at 27°C and 1 atm) per hour of flight. According to the unbalanced chemical equation: C6H12O6 (aq.) + O2(g) – CO2(g) + H2O(g) + AH a. How many mL of oxygen will the hummingbird need to gather to complete a five hour flight? Answer (enclose work) b. If glucose supplies all the needed energy, what is the minimum mass of glucose that the hummingbird must gather from plants...
21 A and B. 21. A solution was made by dissolving 1.63 g MgBr2 in enough water to give 50.0 mL of solution. Then, 10.0 mL of this solution were transferred to another flask and diluted to a volume of 75.0 mL. a. What is the molarity of this final solution? va: 75.0ML V(= 50.0mL 1.639 mg By i mols 1 184.119 mg 1 X 24. 31 Br: 2x 179.904 159.808 184.118 :8.858 103 mois TRIM OSL b. How many...
How many hydrogen atoms are there in 2.50 mol of C6H12067 How many hydrogen atoms are there in 2.50 mol of C6H1206? O 12.0 O 1.51 x 10^24 2.50 0 1.81 x 10^25 CHECK ANSWER