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A 30.5 g sample of an alloy at 92.2°C is placed into 45.7 g water at 24.8°C in an insulated coffee cup. The heat capacity of the coffee cup (without the water) is 9.2 J/K. If the final temperature of the system is 31.1°C, what is the specific heat capacity of the alloy? (c of water is 4.184 J/g×K)
What is the molarity of a nitric acid solution if 43.53 mL 0.1000 M KOH solution is needed to neutralize 20.00 mL of the acid solution
what volume should you dilute 43.5mL of a 4.00M KI solution so that 24.0mL of the diluted solution contains
How would the presence of a double or triple bond help to determine the geometric shape of a molecule?
The equation for the reaction is 2 NH3 + 3 O2 + 2 CH4 ----> 2 HCN + 6 H2O, What is the percent yield of HCN?
Given the information below, what is the value of the unknown equilibrium constant?
Lethality of Carbon Monoxide, Sulfur Dioxide and TNT, Air monitoring provides the following contaminant concentrations at the approximate center of a fire scene in which acres of automobile tires are burning
Using Henry's Law to calculate gas solubility If air contains 78% N2 by volume, what is the solubility of N2 in water of 25oC and 1 atm (Henry's constant kH for N2 in H2O at 25oC = 7 x 10-4 mol/L.atm)?
The allowable concentration level of vinyl chloride,C2H3Cl , in the atmosphere in a chemical plant is 2.4×10-6 .How many moles of vinyl chloride in each liter does this represent? How many molecules per liter?
A 1.20 M solution of citric acid (H3C6H5O7) in water has a density of 1.10 g/cm3. Calculate the normality. Citric acid has three acidic protons.
A nuclear explosion generates so much heat that it turns steel structures in the immediate area into steel vapor. What is the correct name of the type of phase transition that is represented by this process
A sample of nitrogen gas in a 4.6-L container at a temperature of 30.°C exerts a pressure of 3.9 atm. Calculate the number of moles of gas in the sample.
The average mass of a carbon atom is 12.011. Assuming you were able to pick up only one carbon atom, the chances that you would choose a carbon atom with a mass of 12.011 is:
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