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An experiment shows that a 248mL gas sample has a mass of 0.433g at a pressure of 745 mmHg and a temperature of 28 degrees C. What is the molar mass of the gas?
What happens when you mix Calcium Nitrate and Sodium Carbonate? What is the precipitate it forms?
For the next three problems, consider 1.0 L of a solution which is 0.3 M HC2H3O2 and 0.2 M NaC2H3O2 (Ka for HC2H3O2 = 1.8 x 10-5). Assume 2 significant figures in all of the given concentrations so that you should calculate all of the following pH..
How much energy is required to vaporize 48.7 g of dichloromethane (CH2Cl2) at its boiling point, if its ?Hvap is 31.6 kJ/mol?
Of these three separate and individual elements: F, Ra, and As, Arsenic is more likely to form polar bonds. Why and how do you tell
Describe the Bohr effect in oxygen binding by hemoglobin, including all structural
Calculate a change in pH when 10 mL of 0.2 M LiOH is added to the buffer made by mixing 50mL of 0.1 M hydrobromous acid (HOBr) and 40 mL of 0.2 M of sodium hydrobromide
you need to titrate 38.2 ml of an acetic acid solution ch3cooh. acetic acid is a monoprotic acid. you begin your
Dehydration of two alcohols leads to preparation of methylcyclohexene. write chemical equations for both reactions.
What is the change in the chemical potential of the liquid. as a function of change in temperature assuming the entropy near the boiling point is constant
Indicate which layer( aqueous or organic) each component in the reaction will mainly reside in ( for both products and reactants ) for all the following three reactions: (1)Show the reaction of 1-naphthylamine hydrochloride with sodium hydroxide.
Concentrated acetic acid is a Class II combustible liquid. What is the molecular weight of acetic acid that will form 2 moles of CO2 assuming complete combustion?
A 6.50 x 10^-5 M solution of potassium permanganate has a percent transmittance of 27.3% when measured in a 1.15-cm cell at a wavelength of 525 nm.
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