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3 years ago

151200 as scientific notation

1 answer:

5 0

1.512 x 10^5

You simply move the decimal point to the left until you get a number greater than or equal to one, and less than 10, then take that number, and the number of decimal places you moved is the exponent.

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Britney added 0.05 moles of copper(II) nitrate solution to 0.1 moles of sodium hydroxide solution and

Rama09 [41]

The percent yield of copper hydroxide is 84%

<h3>Stoichiometry</h3>

From the question, we are to determine the percent yield of copper hydroxide

First, we will determine the theoretical mass

From the given balanced chemical equation, we have

Cu(NO₃)₂ + 2NaOH -- Cu(OH)₂ + 2NaNO₃

This means,

1 mole of copper(II) nitrate reacts with 2 moles of sodium hydroxide to produce 1 mole of copper hydroxide

Therefore,
0.05 mole of copper(II) nitrate reacts with 0.1 mole of sodium hydroxide to produce 0.05 mole of copper hydroxide

The theoretical number of moles of copper hydroxide that is produced is 0.05 mole

Now, for the theoretical mass

Using the formula,

Mass = Number of moles × Molar mass

Molar mass of copper hydroxide = 97.56 g/mol

Then,

Theoretical mass = 0.05 × 97.56

Theoretical mass of copper of hydroxide produced is = 4.878 g

Now, for the percent yield of copper hydroxide

Percent yield is given by the formula,

$Percent\ yield = \frac{Actual\ yield}{Theoretical\ yield} \times 100\%$

Then,

$Percent\ yield\ of\ copper\ hydroxide= \frac{4.1}{4.878}\times 100\%$

$Percent\ yield\ of\ copper\ hydroxide= 84\%$

Hence, the percent yield of copper hydroxide is 84%.

Learn more on Stoichiometry here: brainly.com/question/9372758

7 0

2 years ago

What is true when a reaction has reached equilibrium?

goldfiish [28.3K]

Answer:

In a chemical equilibrium, the forward and reverse reactions occur at equal rates, and the concentrations of products and reactants remain constant. A catalyst speeds up the rate of a chemical reaction, but has no effect upon the equilibrium position for that reaction.

Explanation:

7 0

3 years ago

Read 2 more answers

In a common laboratory experiment in general chemistry students are asked to determine:_____.

Alex787 [66]

<h3>The <u>complete question</u> would be:</h3>

In a common laboratory experiment in general chemistry, students are asked to determine the relative amounts of benzoic acid and charcoal in a solid mixture. Benzoic acid is relatively soluble in hot water, but charcoal is not. Devise a method for separating the two components in the mixture.

<h3>The <u>solution</u> for that would be:</h3>

First you put the mixture in hot water and allow the benzoic acid to separate. Next funnel it and then see what's on the funnel paper. Lastly, heat the leftover water and see what's left after it evaporates.

<h3><u>What are laboratory experiments ?</u></h3>

Using controlled surroundings to test theories, researchers may develop laboratory experiments.
Laboratories are rooms or specially constructed facilities within buildings that are often found on college and university campuses and are utilized for academic research.
It's crucial to differentiate between experiments and other kinds of research investigations carried out in lab settings.
Even if a research study takes place in a lab, it is not always an experiment.
In order to evaluate causal conclusions regarding the links between independent and dependent variables, laboratory studies, like all genuine experimental designs, use procedures of random assignment of participants and control groups.

To view more about experiments, refer to:

brainly.com/question/17143317

#SPJ4

3 0

1 year ago

Which Element is a member of the Alkali Metal Family?

Rainbow [258]

Answer:

the answer is Sodium (Na)

4 0

3 years ago

HELP ASAP PLEASE!!!<br><br> Formulas for acids usually begin with one or more _____ ions.

Yuki888 [10]

hydrogen ions

H2SO4

HNO3

H3PO4

etc

8 0

3 years ago