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2 years ago

Which prefix is used to indicate that the main chain of a hydrocarbon contains four carbon atoms?

Chemistry

1 answer:

Fantom [35]2 years ago

8 0

The answer for this question would be “but-“

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you are given a solution of lead nitrate. use any of the solution used in this experiment to form a white precipitate of lead ch

Vesnalui [34]

We have as a reagent a salt, lead nitrate (Pb(NO3)2), and an unknown solution that gives us as a product lead chloride (PbCl2). That is, the solution must contain chlorine.

If a chlorine solution is used we will have the following reaction:

$Pb(NO_{3)2}+2Cl^-\rightarrow PbCl_2+2NO^-_3$

So, with a chlorine solution, we will have a white precipitate of lead chloride.

7 0

1 year ago

Calculate the mass in mg of the aspirin tablet that contains 5.0 grains of aspirin . Assume 1 pound contains 7000 grains.

Rzqust [24]

Answer:

323.99 mg

Explanation:

We need to find the mass of the aspirin tablet that contains 5.0 grains of aspirin.

1 pound = 7000 grains

$1\ \text{grain}=\dfrac{1}{7000}\ \text{pounds}$

$5\ \text{grain}=\dfrac{1}{7000}\times 5\ \text{pounds}\\\\=\dfrac{1}{1400}\ \text{pounds}$

We know that, 1 pound = 453.592 grams

Also, 1 pound = 453592 mg

$\dfrac{1}{1400}\ \text{pounds}=\dfrac{1}{1400}\times 453592\ mg\\\\=323.99\ \text{mg}$

Hence, 4 grains of aspirin contains 323.99 mg.

4 0

3 years ago

Gaseous methane reacts with gaseous oxygen gas to produce gaseous carbon dioxide and gaseous water . If of water is produced fro

Nonamiya [84]

Answer:The masses of the reactants and products formed are not included in the question, so we cannot determine the percentage yield of water without knowing the yields of other substances.

However the formulae for percentage yield is;

Percentage yield=experimental yield/theoretical yield X 100

3 0

3 years ago

What is the molarity of a solution made from dissolving 10.0 moles of NaOH into 5.0

Vladimir79 [104]

Answer:

Option D

Explanation:

Molarity (M) of any solution is equal to the number of moles (n)of solute in it divided by total volume of solution (V)

Mathematically, it can be represented as

$M = \frac{n}{V}$

Substituting the given values, we get-

$M = \frac{10}{5} = 2$

Hence, option D is correct

7 0

3 years ago

What does Hund's rule state? A. An orbital can contain two electrons only if the electrons have opposite spins. B. An orbital ca

Ne4ueva [31]

The answer is D. The rules states that every orbital on every sub level must be occupied before any can be double occupied.

6 0

3 years ago