After performing precipitation gravimetry, Asta placed the weighing form inside the crucible, heated it, cooled it down, and weighed the crucible with the weighing form and obtained a mass of 23.4120 g. Repeating this cycle continuously gave a mass of 23.2125 g, then 23.1136 g, then 23.1139 g. Which among these masses should he use for his calculations? a. 23.1139 g b. 23.4120 g c. 23.1136 g

Q: (a) A piston at 6 atm contains a gas that occupies a volume of 3.5 L. What pressure would have to be…

A: We would use gas laws ( Boyle's law , Charles' law , Gay-Lussac's law )  to solve these questions.

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Q: D. SOs Е. Н:О

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Q: Which of the following salts forms a neutral solution when dissolved in water?    NaNO3…

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Q: 1. Find the pH of 0.0500M CH¿CICOOH (a weak acid) where Ka=1.4 x 103

A: The PH of chloroacetic acid(CH2ClCOOH) can be calculated as follows

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Q: Draw the product of the SN2 reaction shown below. Ignore inorganic byproducts. HO Br

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Q: What is the molar concentration of Na+ ions in 0.0350 M solutions of the following sodium salts in…

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Q: Draw the 2D network structure of crystalline AND amorphous B2O3

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A:

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A: ->Alcohol reacts with acetic acid and form ester.

Q: V2. A student prepared a 0.855 M solution of chloro acetic acid, CH2CICOOH, and measured the pH to…

A:

Q: • Determine the number of grams of H2SO4 that would be contained in 800.0 mL of a 1.5 M H2SO4…

A: Given-> Volume b= 800 ml = 0.800 L (1L =1000 ml) Molarity = 1.5 M

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Q: A 3.3 L balloon is filled with He at 1.00bar pressure and 298 K. How many He atoms are in the…

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Q: Calculating reaction entropy using the standard mölår ehtroples. Using the thermodynamic information…

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Q: 1. Identify A-E in the scheme below: CH:(CH2),Br B NaH LDA A Isobutyl bromide 1) DIBAL-H 2) H30* E.

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Q: Question 21 If 17.6 mL of 0.195 M HCIO4 are added to 7.36 mL of 0.0369 M CSOH, what is the final pH?…

A: Calculate moles of acid and base, then, calculate remaining moles of acid. Add the volume of acid…

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Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.