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Explain how these 20 amino acids are responsible for the billions of proteins that are used by the body?
methanolch3oh burns in air to produce carbon dioxide and liquidwater. calculate the heat released in kilojoules per
What volumes of 0.53 M HNO2 and 0.59 M NaNO2 must be mixed to prepare 1.00 L of a solution buffered at pH = 3.41
Calculate the pressure of oxygen for a system in equilibrium in which [NH4+] = [NO3-] at pH 7.00
Consider the decomposition of N2O5 in carbon tetrachloride (CCl4) at 45?C 2N2O5(soln) 4NO2(g) + O2(g) The reaction is first-order in N2O5, with the specific rate constant 6.08 x 10-4/s. Calculate the reaction rate at these conditions.
A 0.2150g sample is dissolved and treated with excess AgNO3. The precipitate is filtered, washed, dried as well as weighed. Product mass (AgCl) is 0.4587g. Explain what is the weight % of Cl in the original sample
What is the boiling point of a solution made by adding 6.79 g of magnesium chloride to 242.0 g of water?
batteries are listed by their cranking power which is the amount of current that the battery can produce for 30 sec a
A compound is composed of element X and hydrogen. Analysis shows the compound to be 80% X by mass, with three times as many hydrogen atoms as X atoms per molecule. Which element is element X
If 10ml of 0.1M zinc nitrate were added to 25mL of 0.1M Ba(OH)2, what would you obersve? write a chemical reaction for this process.
Draw a flow sheet to show how you would separate the components of a mixture containing an acid substance, toluic acid; a basic substance, p-bromo-aniling and a neutral substance, anthracene.
The only materials on hand are 300 mL of white vinegar (5.00% by mass acetic acid, density = 1.006g/mL) and potassium acetate. How should the student proceed?
An unknown metal M reacts with Oxygen to give the metal oxide MO2. Identify the metal based on the following information.
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