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125 mL of H_2O is initially at room temperature (22.0C). A chilled steel rod at 2.0C is placed in the water. If the final temperature of the system is 21.5C, what is the mass of the steel bar?
Presence of Aldehyde Group, An excellent way to identify the presence of an aldehyde group is by 1H NMR. The chemical shift of the aldehydic proton occurs in the 9-10-ppm region
Acetylene gas (C2H2) is produced as a result of the following reavtion. CaC2(s) + 2H2O(l) yield C2H2(g) +Ca(OH)2(aq)
An aqueous solution of KI has a freezing point of -1.70 C and an osmotic pressure of 26.5 atm at 25.0 C. What is the density ?
Dipole moment, Formaldehyde has a very large dipole moment (2.33 Debye) whereas carbon monoxide has a very small dipole moment (0.11 Debye)
the frequency factor a is 8.7x 10 12 s- and the activation energy is 63 kj/mol, What is the rate constant for the reaction at 75C
If you mix 10.0 grams of CH3SH with excess CO and 8.65 grams of CH3COSCH3 is produced, what is the percent yield of the CH3COSCH3?
Calculate the molar solubility of AgCl in a 1.00L solution containing 10.0g of dissolved CaCl2. Compare the molar solubility of Mg(OH)2 in water and in a solution buffered at a pH of 9.0
How many grams of Na3PO4 will be needed to produce 400ml of a solution that has a concentration of Na+ ions of 0.900 ?
NH3(Ammonia ) is widely used in many household cleaners and as a fertilizer. Calculate How much ammonia (in units of mol) is produced when 7.8 mol of H gas react with an excess of N gas.
How many grams of IO2F are needed to react completely with 150.0 g of BrF3? 3IO2F(s) + 4BrF3(l) → 3IF5(l) + 2Br2(l) + 3O2(g)
Organic Oxygen Compounds, What are the possible isomers for Methanol, 1-Propanol, & 1-Pentanol?
How many milliliters of 6 M HNO3 would you add to 300 mL of the buffers solution to change the pH from 5.09 to 5.03?
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