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3 years ago

Which physical property is used to be Indentify the ability to dissolve

Chemistry

1 answer:

natulia [17]3 years ago

5 0

Answer:

solubility

Explanation:

solubility is a measure of how much a substance will dissolve in a solvent.

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Draw the structural formula for 3-ethyl-3-methyl-1-pentyne. Click the "draw structure" button to launch the drawing utility.

Dima020 [189]

Answer:

See attached picture.

Explanation:

Hello,

In this case, for the given name, you can verify the structure on the attached picture, wherein you can see verify the presence of both the ethyl and methyl radicals at the third carbon as well as the triple bond at the first carbon.

Best regards.

6 0

3 years ago

Why weren’t scientists initially concerned that the ocean absorbs excess carbon dioxide?

nasty-shy [4]

They only discovered

5 0

2 years ago

One __________ of a substance contains the same number of molecules/atoms as in 12 grams of carbon 12

mash [69]

Answer:

"mole"

Explanation:

That is the definition of mole. Mole is a unit for the measurement of how much there is of something. In other words, in SI, 1 mol of a substance contains the same number of molecules/atoms as in 12 grams of carbon 12.

(Approximately 6.28 × 10^23 --> Avogadro's constant)

For further explanation, check out Wikipedia's article here:

https://en.m.wikipedia.org/wiki/Mole_(unit)

4 0

3 years ago

Periods on the periodic table are

Roman55 [17]

Answer:

Periods on the periodic table of elements

Explanation:

In the periodic table of elements, there are seven horizontal rows of elements called periods. The vertical columns of elements are called groups, or families. (See also The Periodic Table: Metals, Nonmetals, and Metalloids.) In each period (horizontal row), the atomic numbers increase from left to right.

6 0

3 years ago

An impure sample of benzoic acid (C 6H 5COOH, 122.12 g/mol) is titrated with 0.2099 M NaOH. A 1.021-g sample requires 35.73 mL o

Finger [1]

Answer:

The percent by mass of benzoic acid = 89.7 %

Explanation:

Step 1: Data given

Molarity of NaOH = 0.2099 M

Mass of the sample = 1.021 grams

Volume of NaOH = 35.73 mL = 0.03573 L

Step 2: The balanced equation

C6H5COOH(aq) + NaOH(aq) → NaC6H5COO(aq) + H2O(l)

Step 3: Calculate moles NaOH

Moles NaOH = molarity NaOH * volume NaOH

Moles NaOH = 0.2099 * 0.03573 L

Moles NaOH = 0.00750 moles

Step 3: Calculate moles benzoic acid

From your balanced equation - benzoic acid reacts in 1:1 molar ratio with NaOH

The sample must have contained 0.00750 moles benzoic acid

Mass benzoic acid in 0.00750 moles = 0.00750 * 122.12 = 0.9159 g benzoic acid

Mass % acid in sample = 0.9159/1.021 * 100 = 89.7% purity.

The percent by mass of benzoic acid = 89.7 %

5 0

3 years ago