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Determine the molarity of a solution formed by dissolving 15.79 grams of CaCl2, calcium chloride in 200.grams of H2O, water?
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Interpretation of Reactions by Ionic Type Equations. Aqueous solutions of the following substances or their mixtures with water if they are only slightly soluble, are mixed. Write first the conventional equation , secon ...
How many moles of magnesium ion are present in 5.25g Mg 3 (PO 4 ) 2 ?
A sample consisting of 1.0 mol CaCO3(s) was heated to 800 °C, when it decomposed. The heating was carried out in a container fitted with a piston that was initially resting on the solid. Calculate the work done during co ...
1) If Congress taxes CO2 production at $40 per ton of CO2, what is the tax to burn one ton (2000 pounds) of coal which is 75% carbon? 2) How much heat energy can you get from burning that ton of coal? Take the book value ...
When benzene (C6H6 ) reacts with bromine (Br2 ), bromobenzene (C6H5Br ) is obtained: C6H6+Br2→C6H5Br+HBr What is the theoretical yield of bromobenzene in this reaction when 28.0 g of benzene reacts with 60.7 g of bromine ...
A 3.15- sample of NH4NO3 is introduced intoan evacuated 2.26- L flask and then heated to 245 C. What is the total gas pressure, in atmospheres, in the flask at245 C when the NH4NO3 has completely decomposed?
What are the benefits of measuring the absorbance at the maximum absorbance wavelength? If light has a wavelength of 756 nm, what is the wavelength in centimeters? What is the wavelength in inches?
1. Balanced equation for the double-replacement precipitation reaction described, using the smallest possible integer coefficients. A precipitate forms when aqueous solutions of iron(II) chloride and sodium hydroxid ...
A chemistry lab experiment requires 67.4 grams of silvernitrate. How many grams of a 15.5% by mass solution of silvernitrate should be used?
Assessment Task You have been tasked to prepare a report for potential investors that allows them to understand the potential social, ethical and legal opportunities and risks of a technology, selected from a list of top ...
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