Molar mass of Mg(NO3)2,
MM = 1*MM(Mg) + 2*MM(N) + 6*MM(O)
= 1*24.31 + 2*14.01 + 6*16.0
= 148.33 g/mol
Answer: 148.33 g/mol
Question 14 of 15 Determine the molar mass of Mg(NO3)2. g/mol 1 4 2 5 3...
X + Question 11 of 15 Determine the molar mass of CH3OCH3. g/mol 1 2 3 4 5 6 7 8 9
QUESTION 4 What is the molar mass of nitroglycerin, C3H5(NO3)3? O 199 g/mol O 179 g/mol O 227 g/mol O 185 g/mol QUESTION 5 The number of moles in 37.80 g of C2H60 (molar mass = 46.1 g/mol) is 1.575 x 100 9.072 x 102 1.743 x 103 8.200 x 10-1 QUESTION 6 Determine the percentage composition (by mass) of oxygen in H2SO4. 65.25 %
Determine the molar mass of the following organic compound. | g/mol 2 3 1 4 6 C 7 00 9 +/- 0 X 100 Determine the molar mass of the following organic compound. F g/mol 1 2 3 НАС 4 6 C 7 8 9 +/- 0 x 100 Which of the following molecules can be classified as an alkene? А B OH NH2 A) A OH B) B D C) C O= NH2 D D
X + Question 12 of 15 Determine the molar mass of CH3OH. g/mol 1 2 3
What is the molar mass of Ca(NO3)2? (3 points) 102.2 g/mol 134.1 g/mol O 164.1 g/mol 0 204.2 g/mol
Part 1 (1 point) A chemist makes up a solution by dissolving 25.0 g of Mg(NO3)2 in enough water to produce a final solution volume of 141 mL. To calculate the molarity of the solution, what additional information is needed? And See Periodic Table ’See Hint Choose one: the molar mass of Mg(NO3)2 the volume of water used the mass of the water added the density of the Mg(NO3)2 Part 2 (1 point) See Hint Calculate the number of moles...
2Mg(s) + O2(9) --> 2Mgº(s) molar mass Mg = 24.30 g/mol molar masso2 = 31.98 g/mol molar mass Mgo = 40.29 g/mol If 12.6 grams of magnesium completely react to form magnesium oxide according to the equation given, how much magnesium oxide is produced?
I need help on part #3, #7, #8, #9
Thanks!
Trial 1 Trial 2 Trial 3 0.5038 O.5086 1. Mass of KHCSH O4 (KHP), g 2. Molar mass of KHCsH404, g/mol 3. Moles of KHC$H404, mol 4. final reading of NaOH, mL 23-5lm 5.inital reading of NaOH, mL 6. Volume of NaOH dispensed, mL 23.Sl mL 23.51 m (Final Reading -Initial Reading) 7. Moles of NaOH reacted (1:1 mole ratio with KHP) 8. Molarity of NaOH, mol/L 9. Average Molarity...
5. 74.1% carbon, 8.6% hydrogen, & 17.3% nitrogen by mass. Its molar mass = 160 g/mol. 6. 59.0% carbon, 7.1% hydrogen, 26.2%oxygen, & 7.7% nitrogen by mass. Its molar mass = 180 g/mol. Find the molecular formula of a compound given: 7. 212.1 g sample with 42.4 g hydrogen and 169.7 g carbon. Molar mass = 30.0 g/mol 8. Carbon & Hydrogen containing compound sample with molar mass = 114.26 g/mol. 1 mole of the sample contains 18.17 g hydrogen....
Question 14 A 2.49 g sample of aniline (C6H5NH 2, molar mass = 93.13 g/mol) was combusted in a bomb calorimeter with a heat capacity of 4.25 kJ/°C. If the temperature rose from 29.5°C to 69.8°C, determine the value of AH comb for aniline. O +1.71 x 103 kJ/mol -3.20 * 103 kJ/mol -1.71 x 103 kJ/mol +6.40 x 103 kJ/mol O -6.40 103 kJ/mol x