Search & Filtering
A 3.215 kg unknown substance was transformed from solid to liquid by condensing 10.57 kg of steam under atmospheric condition
What is the initial temperature of steam in degF?
How much heat was gained by the steam in kJ?
What is the heat of fusion of the unknown substance in kj/g?
Two moles of gas A at 35 degF and 35 grams of gas B at 35 degC were combined and their temperature become 20 degC. Gases A & B have specific heats of 5/3 R and 7/2 R, respectively. Use R = 8.3145 J/mol-K, 1 BTU = 1055 J
What is the initial temp of Gas A in degC?
What is the change of temperature of Gas B in K?
Change of temperature of Gas B in degF?
Molecular weight of Gas B?
How much is the heat involved in the process in BTU?
To me it is not clear.
The decomposition of copper (II) carbonate hydroxide into copper(II) oxide and
carbon dioxide water will be observed. For our reaction, we will use 1.00 grams
of copper (II) carbonate hydroxide. In the space below, use the 4 steps (mass-
mass calculations) to calculate how much copper (II) oxide should theoretically
form
What is the volume of a 28.0g sample of propane (C3H8) gas at STP?
What is the molarity of a solution if 47.50 g potassium iodide (KI) is added to a container that is then filled with water to a final volume of 201 mL?
calculate the volume of the same mass of water at 300 degrees
In a 1 molar solution of acetic acid (containing 1 mol of acetic acid per liter of solution) only about 0.5% of the acid is ionized to produce an acetate ion and a hydrogen ion. Calculate the number of moles of H+ in a liter of such a solution.
the standard enthalpy of the reaction: CO(NH2)2(S)+H2O(1)=2 NH3(g) is -133.42 kJ/mol. calculate the standard enthalpy of formation of urea, CO(NH2)2(s)
A sample of a compound of Cl and O reacts with an excess of H2 to give 0.233 g of HCl and 0.403 g of H2O. Determine the empirical formula of the compound.
