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You take a 25.00 g ice cube (temperature -20 EC) and place it in 225.00 g of water at 22 EC. What will the temperature of the water be when the ice cube has just melted. Assume the specific heat capacity for ice and water is 4.184 J/K@g. If you then heat the water from this temperature to 80 EC by burning methane (ÄHrxn= !890.31 kJ/mol), how many grams of methane would you have to use?
What is the new volume of the balloon (in mL) at constant temperature?
what is the balanced net ionic equation? AND what is the molarity of the tartaric acid solution?
a solid,is thought to be either zinc or lead(2)nitrate.how are we going to determine the identity of the solid?
Briefly explain why the part of the curve beyond the equivalence point is similar in the graphs for a strong acid-strong base and weak acid-strong base, even though you titrated a strong acid in one and a weak acid in the other.
The bright-red color of highway safety flares comes from strontium ions in salts such as Sr(NO3)2 and SrCO3. Burning a flare produces strontium ions in excited states,
12.00mL of 0.125M of HCl is required to titrate 21.55mL of Mg(OH)2. Calculate the molarity of the unknown base.
A solution is initially 0.050M in acetate, CH3COO- (Kb = 5.6 x 10^-10). 10.0mL of 0.10 M HCl is added to 50.0mL of the acetate solution. The Ka for the conjugate weak acid of CH3CHOO- is 1.8 x 10^-5. Calculate the pH for this solution at equilibri..
Draw the mechanism of N-acetylglucosamine hydrolysis. a) under alakine conditions and b) under acidic conditions
a gas is contained in a 5.0 l container at a pressue of 100kpa. what size container would be required to contain the
For each of these three chemicals, state how the "parity rule" is (or is not) obeyed by the MS data. If this question cannot be answered for a chemical, state briefly why not (for example, what additional data would be needed or why the situation ..
A sample of sodium reacts completely with 0.355 of chlorine, forming 585 of sodium chloride. What mass of sodium reacted?
question how to draw a diagram of sodium metal starting with one sodium atom then two atoms then four atoms then eight
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