QUESTION 23 How much heat is released by the complete oxidation of 7.50 g of CH3OH...
NEED ANSWER ASAP PLZ QUESTION 23 How much heat is released by the complete oxidation of 7.50 g of CH3OH according to the following balanced thermochemical equation? 2CH3OH + 302 --> 2002 + 2H20 AH rxn = - 1528 kJ/mol rxn O 84.9 kJ O 39.2 kJ O 317 kJ o 4.23 kJ 0 179 kJ O 275 kJ O 57.6 kJ 0 841 kJ
> Moving to the next question prevents changes to this answer. question 4 How much heat is released by the complete oxidation of 115 g of CH3OH according to the following balanced thermochemical equation? 2CH3OH + 302_ 2002 + 2H20 AH rxn - - 1528 kJ/mol rxn 44.9 W o 192 k 0 327 w 4.23 W 1.79 x 103 W 2.75 x 103 W 576 W 641k Moving to the next question prevents changes to this answer
Methanol (CH3OH) burns according to the equation 2CH3OH(l) + 3O2(g) → 2CO2(g) + 4H2O(l), ΔH°rxn = –1454 kJ/mol. A) How much heat, in kilojoules, is given off when 150.0 g of methanol is burned? [ Select ] B) How many grams of CO2 are produced when the amount of heat determined in part A is released? [ Select ] Molar masses: CH3OH = 32.04 g/mol O2 = 32.00 g/mol CO2 = 44.01 g/mol H2O = 18.02 g/mol
How much heat is evolved upon the complete oxidation of 9.41 g of aluminum at 25°C and 1 atm pressure? (AH° for Al2O3 is - 1676 kJ/mol.) 4Al(s) + 302(g) --> 2Al2O3(s) O 146 kJ O 1169 kJ O 292 kJ 0 585 kJ O 1.58 x 104 kJ
QUESTION 10 A system releases 7 J of heat. And the same time 12 J of work is done on the system by the surroundings. What is the AU? 05 -13) 8) 07) O-36) -131 QUESTION 11 A system absorbs 41 of heat. And the same time the system does 6 J of work on the surroundings. What is the AU? O-9) -39) 35 ) 11) 14 ) -15) QUESTION 12 A system absorbs 8J of heat. And the same...
1. How much heat is needed to raise the temperature of 1.50 g of aluminum metal from 23.2 °C to 30.5 °C? (Specific heat capacity of aluminum is 0.90 J/g-K). 2. Given the following thermochemical equation: DH = -1107 kJ How many kJ of heat are released when 15.75 g of Ba(s) reacts completely with oxygen to form BaO(s)? 3. Mothballs are composed primarily of the hydrocarbon naphthalene (C10H8). When 1.25 g naphthalene is burned in a bomb calorimeter, the temperature rises from 25.25...
Question 5 5 pts How much heat will be released when 350 g NH3(g) changes from a gas to a a liquid? Use one of the values below in your calculation (you will need to determine which one based on the problem given). AHvap kJ/mol = 23.3 AH fus kJ/mol = 5.66 478.86 kJ 116.32 kJ O 73.69 kJ 354.67 kJ
How much heat is released if 7.15 g Cao is added to excess H2O? CaO + H2O + Ca(OH)2 AH = – 64 .8 kJ/mol
How much heat is released if 35.0 g of ethanol (C2H5OH) burns in excess oxygen? C2H5OH() + 302(g) - 2CO2(0) + 3H2O() ДНrxn = –1367 kJ/mol Multiple Choice О 4.78 x 104 kJ Отэт к 1797 kJ О 9.61 ж 10-4 kJ О 1040 kJ О 1367 kJ
4 Question 10 How much heat in kJ is produced by the combustion of 155 g of ethanol (CHO)? CH,O(g) + 302(8) 2002(8) + 3H2O(g): AHørxn--1366.8 kJ/mol The molar mass of ethanol is 46.07 g/mol 4.60 x 10 3.12 x105 2. 11854x105 8.82 4 pts