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(a) What is a ferromagnetic material?
(b) Why does a permanent magnet attract pieces of ferromagnetic materials?
What would happen if the pieces were above their Curie temperature?
calculate the deltahrxn for the combustion of glucose c6h12o6 using deltahf values. you will have to calculate the
Problem- If you wanted to measure the concentration of a particular species in a sample, describe the procedure you would use to do so.
Describe how you would prepare the buffer solution using one of the weak bases listed in the Table below and any other necessary reagents.
Assuming that teh F-18 can be transported at 58.0 miles/hour, how close must the hospital be to the cyclotron if 63% of the F-18 produced is to make it to the hospital
Determine the mass of acetamide present per kg of water if the freezing point of this solution is 0 °C. (The freezing point of pure water is 0°C (exactly) at 1 atm pressure and the molal freezing-point-depression constant for water is 1.86°C/m.)
It is found that 3.8 mL of a 0.01 g/L solution of NaOH is required to completely react withe all HCl. HOw many moles of HCl are present
the amount of h2o2 in 15.8g of hair bleach was determined by titration with a standard potassium permagnate
In the lower atmosphere, oxygen gas is converted to ozone gas by energy provided from lightening as shown in the reaction below and the value of the equilibrium constant for this reaction at 25C is Kc = 1.7 x 10^-56.Equation
Calculate the mass percent composition of carbon in each the following carbon compounds. Express your answer using 4 significant figures. C4H10 C6H10 C8H13O5N
a) What is the structure of biacetyl? b) Indicate the hybridization of each carbon atom. c) How many pi bonds are present? d) Do the four carbon atoms lie in a plane or do they lie in a straight line?
a experiment would also work using another reactive metal such as zinc.If you had used the same number of grams of Zn as you did Al in this experiment,would you have obtained more or less hydrogen. Illustrate with an equation and calculation
A heat exchanger is used to transfer heat from a steam stream to a chlorine gas stream. 100 kg of steam at 1 bar and 400°C enters the heat exchanger and leaves the exchanger as saturated steam at 1 bar. Chlorine gas enters the exchanger at 1 bar a..
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