1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alecsey [184]
3 years ago
5

+

Chemistry
1 answer:
aleksklad [387]3 years ago
4 0

Answer:

<h3>The answer is 41.05 %</h3>

Explanation:

The percentage error of a certain measurement can be found by using the formula

P(\%) =  \frac{error}{actual \:  \: number}  \times 100\% \\

From the question

actual density = 0.95 g/mL

error = 0.95 - 0.56 = 0.39

So we have

p(\%) =  \frac{0.39}{0.95}  \times 100 \\  = 41.0526315...

We have the final answer as

<h3>41.05 %</h3>

Hope this helps you

You might be interested in
The reaction in which hydrogen and oxygen are produced by running an electric current through water is an example of
Ainat [17]
Decomposition is the  example  of a  reaction  in  which  hydrogen and oxygen  are  produced  by  running   an  electric current  through  water.

 Decomposition  of   water through  electrolysis  of  water  into   oxygen  and hydrogen   gas  due  an electric  current  passed  through   water.   when an  electric  current  is passed through  water, oxygen   gas is being  produced  at  the anode  and  hydrogen  gas  is produced  at the  cathode.
4 0
3 years ago
Read 2 more answers
Consider the reaction CaCN2 + 3 H2O → CaCO3 + 2 NH3 . This reaction has a 75.6% yield. How many moles of CaCN2 are needed to obt
kherson [118]

Answer: Thus 0.724 mol of CaCN_2 are needed to obtain 18.6 g of NH_3

Explanation:

To calculate the moles :

\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}    

\text{Moles of} NH_3=\frac{18.6g}{17g/mol}=1.09moles

CaCN_2+3H_2O\rightarrow CaCO_3+2NH_3

According to stoichiometry :

2 moles of NH_3 are produced by = 1 mole of CaCN_2

Thus 1.09 moles of NH_3 will be produced by =\frac{1}{2}\times 1.09=0.545moles  of CaCN_2

But as yield of reaction is 75.6 %, the amount of CaCN_2 needed is =\frac{0.545}{75.6}\times 100=0.724

Thus 0.724 mol of CaCN_2 are needed to obtain 18.6 g of NH_3

3 0
3 years ago
NaCl is ___ formula of common salt
MrMuchimi

Answer:

None of them, D

Explanation:

The actual answer is chemical formula NaCl, representing a 1:1 ratio of sodium and chloride ions.

5 0
3 years ago
Read 2 more answers
Which of the following measurements is expressed to three significant figures? 7.30 × 10–7 km 0.007 m 7077 mg 0.070 mm
Sonbull [250]

7.30 x 10^-7 km. the others have 4 significant figures.

4 0
2 years ago
For a principal quantum number n, how many atomic orbitals are possible?
slavikrds [6]

Answer:

The total number of orbitals for a given n value is n2.

Explanation:

For a hydrogen atom with n=1, the electron is in its ground state; if the electron is in the n=2 orbital, it is in an excited state.

5 0
3 years ago
Other questions:
  • Round the following numbers to 3 significant figures.
    10·1 answer
  • How does intestinal failure affect the body?
    12·1 answer
  • Cathode ray tube experiments
    9·1 answer
  • Which of the following represents the most matter?
    5·1 answer
  • In which phase(s) of matter are the atoms closely packed but still able to slide past each other? gas liquid
    11·2 answers
  • The movement of substances from an area of low concentration to an area of high concentration is called what?
    15·1 answer
  • Total atoms of each element in<br>5CaCl2+3Ca(ClO4)2+4Ca(OH)2​
    5·1 answer
  • What other substance (besides salt) could you sprinkle over ice to affect how fast it melts? Describe how you would test the sub
    14·1 answer
  • 3.
    15·1 answer
  • Given substances f2, kr, cl2 and hbr rank them with respect to the highest boiling point?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!