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Concentrated nitric acid (HNO3) has a density of 1.42 g/mL and is 70% nitric acid. Calculate the molarity of the acid if 30 mL of the concentrated acid is mixed with 255 mL of water.
Problem- A 23.113 mg sample of a chemical known to contain only carbon, hydrogen, sulfur, and oxygen is put into a combustion analysis apparatus, yielding 41.174 mg of carbon dioxide and 16.855 mg of water. In another experiment, 21.223 mg of the ..
Consult your lecture or lab text and give a complete structuer for the 'intermediate borate ester' formed in the reduction of 2-butanone with NaBH4. Why is it necessary to add water after the reaction is complete?
How many grams of the element nickel are contained in 10.0 g of a 10.2 wt % solution of nickel sulfate hexahydrate, NiSO4 . 6H2O (FM 262.85)?
What ions and/or molecules are present in relatively large proportions in a solution of a weak base NH4OH (aq)?
The rate at which a compound travels through a particular GC system depends on numerous factors. List the five factors and number them one through five.
A neon sign is made of glass tubing who's inside diameter is is 2.5cm and whose length is 5.5m. If the sign contains neon at a pressure of 1.78 torr at 35 degrees Celcius, how many grams of neon are in the sign
Give the formula unite that forms from ionic compounds between: 1 Potassium and Nitrogen 2 Aluminum and Phosphorus 3 Aluminum and Phosphorus
Write the mechanism for the acid-catalyzed reaction of an amide with a methanol to form an ester
A sample of sodium reacts completely with 0.142 kg of chlorine, forming 234 g of sodium chloride. What mass of sodium reacted?
The molecules CO2 and SCL2 are both of the general molecular type AB2, but one is polar and one is not. Which molecule is polar?
the concentration of Hcl in a solution by titrations using different indicators to find the end point. Is the difference between indicators 1 and 2 significant at the 95% confidence level?
Complete and balance the following equation: BrO3^-(aq)+N2H4(aq) -> Br2(l)+N2(g) (acidic solution) And identify the oxidizing and reducing agents from the resulting balanced equation.
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