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Explain how many grams of sucrose should be added to 355g of water to produce a solution that is 0.92% (m/m) sucrose?
A microwave oven operating at 2.4 GHz has a power output of 650 W. A) What is the wavelength of the mocrowaves?
describe and explain the possible effects on your results of the following experimental errors or variations.
Ar is a solid below -189 oC with a face-centered cubic array of atoms and a supposed density of 2.29 g/cm3. Assuming that the atoms are spheres in contact along the face diagonal, what is the radius of a Ar atom
Today Chemistry plays an important role in our everyday lives. When you come to think about it, it is in everything that we do. Define chemistry in your own words and list at least FIVE(5) examples of how you applied chemistry today.
When ice melts, it absorbs 0.33 kJ per gram. How much ice is required to cool a 13.0 oz drink from 74 degree F to 31 degree F
Calculate the pH of 0.515 L of a 0.210 M NH_4Cl and 0.210 M NH_3 buffer before and after the addition of the following substances. Assume that the volume remains constant.
the cancer drug cisplatin contains 65% platinum. if you have 1.53 g of compound, how many grams of platinum does this sample contain
A galvanic (voltaic) cell consists of an electrode composed of aluminum in a 1.0 M aluminum ion solution and another electrode composed of copper in a 1.0 M copper(II) ion solution, connected by a salt bridge. Calculate the standard potential for ..
For the following reaction: Fe(OH)2 + H3PO4 ----> Fe3(PO4)2 + H2O [Unbalanced] In a reaction, 3.20 g of Fe(OH)2 is treated with 2.50g H3PO4. If 3.62g of Fe3(PO4)2 is produced in the reaction, what is the percent yield for the reaction?
you measure 2.34 grams of potassium dichromate k2cr2o7 into a volumetric flask. you dilute the potassium dichromate
Which of the following equations represents the proper net ionic equation for the complete neutralization reaction between the weak acid HClO2 (aq) and the strong base NaOH (aq)
A 32.5 mL sample of NaOH solution was titrated with 64.23 mL of a 1.25 M HCl solution to the equivalence point. What is the molarity of the NaOH
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