Recent content by mightyhealthy

Here it goes: You purchase a cup of coffee at Dunkin Donuts. The coffee is about 90deg. in a styrofoam insulated cup. The main question is: Should you mix your cream, which is about 5deg cels, in the coffee at dunkin donuts or wait til you get home? The temperature outside is about 25deg...

ok I've had this for a day: 3I2+2Al---->2AlI3 761.4g 3 mol 53.96g 2 mol 815.36g 2 mol now what?

Homework Statement Calculate the mass in grams of iodine(I2) that will react completely with 23g of aluminum (Al) to form aluminum iodide (AlI3). Homework Equations The Attempt at a Solution don't even know where to start mol mol avogrado mol

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Calculate the mass in grams of iodine(I2) that will react completely with 23g of aluminum (Al) to form aluminum iodide (AlI3).

Homework Statement A hydrate has the following percent composition: Pb=54.61%, C=12.66%, H=1.61%, O=16.88% and H2O=14.24%. What is the formula of the hydrate? Homework Equations The Attempt at a Solution i was told to divide the percentages by the total molecular mass... makes...

Homework Statement A Sheet of aluminum(Al) foil has a total area of 1.000ft^2 and a mass of 3.636g. What is the thickness of the foil in millimeters (density of Al=2.699g/cm^3)? Homework Equations d=m/v The Attempt at a Solution 1.347=totally wrong... help please

Homework Statement The natural abundaces of elements in the human body, expressed as a percent by mass, are oxygen (o) 65%; carbon (C), 18%; hydrogen (H), 10%; nitrogen (N), 3.0%; calcium (Ca), 1.6%; phosphorous(P), 1.2%; all other elements 1.2% Calculate the mass in gram of each element in...