Calculate the heat of reaction
Calculate the heat of reaction in kJ. SiO2(s) + 4 HF(g) SiF4(g) + 2 H2O(l)
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Assume you dissolve 2.56g of malic acid, C4H6O5 in half a liter of water (500g). Calculate the molarity, molality, mole fraction, and weight percentage of acid in the solution.
The critical point of NH3 is 132°C and 111 atm, and the critical point of N2 is -147°C and 34 atm. Which of these substances cannot be liquefied at room temperature no matter how much pressure is applied?
You have 1005.3 g of a bleach solution. The percent by mass of the solute sodium hypochlorite, NaOCl, is 3.62%. How many grams of solvent are in the solution?
what volume of ethylene glycol, a nonelectrolyte, must be added to 15.0 Liters of water to produce an antifreeze solution with a freezing point of - 30 degrees celcius?
Hydrofluoric acid (HF) has a Ka value of 7.2 × 10¯ 4. 0.250 mol of F¯ ions (in the form of NaF) are added to 1.00 L of 0.100 mol L¯ 1 aqueous HF. Calculate the resulting pH.
A solution of ethanol (C2H5OH) in water is prepared by dissolving 57.0 mL of ethanol (density = 0.79 g/cm3) in enough water to make 255.0 mL of solution. What is the molarity of the ethanol in this solution?
A calorimeter contains 150g of water at 65 C. 45f of 5 C is added to the calorimeter and the mixture's temperature stabilizes. what is the final temperature?
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Write a letter of nomination for an honorary doctorate. Genny's Academy Daycare & Learning Center is a licensed child care center located in Prichard, Alabama.
Review Case Study: Bridging The Two Worlds By William Todorovic. What symptoms in this case suggest that something has gone wrong?
Assignment: Discuss Descriptive Statistics in Research. A description of the purpose of the research, the hypotheses, and the methods
What are the potential "pitfalls" when an ambivalent client meets a helper who has the "fixing reflex?"
Discussion Thread: Motivational Interviewing Is Better "Tried" Than "Described" 1. Pitfalls When an Ambivalent Client Meets a Helper with the "Fixing Reflex?"
Review: Using Jenga in the Couples and Family Counseling Classroom: A Method for Demonstrating Bowen Family System Theory
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