![]() ![]() And I get two significant figures because 1.5 times 10 to the third has two sig figs, I believe. I can round this to two significant figures. I can round this to let me go check my significant figures. Now I will put these into my calculator, 1.5 times 10 to the third, times two times 78.11, Divided by 60- 78. Question: Pure benzene, C6H6, has a molar mass of 78.114 g mol-1, a density of 0.8765 g mL-1, a freezing point of 5.45C, and a boiling point of 80.2C. But I'm gonna go look this up to make sure I'm a little bit more precise than that. And I know that one mole of C six H six 17. 1.5 times 10 to the third, 1.5 times 10 to the third killer jewels. And I know that I can and that's not what I want to produce. And I want to make a note that I can ignore the sign just to make things a little bit better. The molar mass (in g mol1) of X is 50, Y is 35, and Z is 90. ![]() Take the number of moles and multiply it by the atomic mass. You have a 2.00 g sample of compounds X, Y, and Z. For this you need the atomic (molecular) mass of C6H6. So we want to know how much how much Benzene to produce negative 6 to 78 kg joules. 8 g C6H6 x 78.12 g 1 mol 1 mol 6.02 x 1023 x 2.93 x 1022 molecules C6H6 5. And we're also told that their heat of reaction is equal to -6-7 8 killer jewels. 1.23 x 103 kJ/mole 2.35 x 104 kJ/mole 1.92 x 103 kJ/mole -1.We are given the following chemical equation 15 02. Molar mass of molecules can be determined from the chemical formula and molar masses of. 27) What volume of benzene (C6H6, d 0.88 g/mL, molar mass 78.11 g/mol) is required to produce 1.5 x 103 kJ of heat according to the following reaction 64,504 results, page 4 chemistry Hvap 40.65 kJ/mol Hf -285.83 kJ/mol Hfusion 6.03 kJ/mol specific heat 4.186 J/gC molar mass 18.02 g How much energy is consumed by thawing 4. Solution: The molar mass of molecules of those elements is equal to the molar mass of the atoms multiplied by the number of atoms in each molecule. ![]() The heat capacity of the calorimeter is 4.90 kJ/☌. Intro Chem Principles II Number of moles of benzene Molar mass of benzeneMass of benzene 78 g/mol60.5 g 0.775 molNumber of moles of toluene Molar. The ratio of elements by mass must be converted to ratio of elements by numbers (amount of substance). Molar mass of benzene (C6 H 6 ) Number of moles of C6H6 (100 30) g 70 g Number of moles of CCl4 0.3846 mol Molar mass of carbon tetrachloride. A Compound Is 24.7 Calcium, 1.2 Hydrogen, 14.8 Carbon, And 59.3 Oxygen. T or F: The empirical formula for C6H6 is C3H3. Calculate AErxn for the combustion of sucrose in kJ/mol sucrose. A compound with an empirical formula of C4H4O and a molar mass of 136 grams per mole. So, Molar mass of Benzene (C6H6) Molar mass of 6 Carbon (C) atoms + Molar mass of 6 Hydrogen (H) atoms. The temperature rises from 25.00☌ to 29.00☌ in a bomb calorimeter when 3.50 g of sucrose undergoes combustion in a bomb calorimeter. The molar mass of ethanol is 46.07 g/mol. ![]() If the temperature rises from 25.0 to 62.3☌, determine the heat capacity of the calorimeter. 297 K 398 K 187 K 133 K 377 KĪ 21.8 g sample of ethanol (C2H5OH) is burned in a bomb calorimeter, according to the following reaction. The specific heat capacity of gold is 0.128 J/g✬. 10 1 answer below » What is the MOLAR heat of combustion of benzene, C6H6, if the combustion of 1.00g of BENZENE CAUSES THE TEMPERATURE RISE OF 5.18 deg C in a bomb calorimter that has a heat capacity of 8.07 kj/deg C (molar mass c6h6 78.1) 1 Approved Answer Mark B answered on Janu3 Ratings, ( 9 Votes) heat 5.18 x 8.07 41. Transcribed image text: What volume of benzene (C6H6, d= 0.88 g/mL, molar mass = 78.11 g/mol) is required to produce 1.5x 103 kJ of heat according to the following reaction? 2 CyH6(1) + 15 O2(g) → 12 CO2(g) + 6 H2O(g) AH°rxn = -6278 kJ 19 mL 37 mL 75 mL 42 mL 21 mLĭetermine the final temperature of a gold nugget (mass = 376 g) that starts at 398 K and loses 4.85 kJ of heat to a snowbank when it is lost. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |