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
Sholpan [36]
2 years ago
14

A mixture of BaCl2 and NaCl is analyzed by precipitating all the barium as BaSO4. After addition of an excess of Na2SO4 to a 3.6

56-g sample of the mixture, the mass of precipitate collected is 1.658 g. What is the mass percentage of barium chloride in the mixture
Chemistry
1 answer:
Juli2301 [7.4K]2 years ago
5 0

Answer:

\% m=40.46\%

Explanation:

Hello there!

in this case, according to the given information, it turns out firstly necessary for us to write up the chemical equation as shown below:

BaCl_2+Na_2SO_4\rightarrow BaSO_4+2NaCl

Thus, we calculate the mass of BaCl2 stoichiometrically related to the produced 1.658 g of precipitate in order to discard it from the sample:

m_{BaCl_2}=1.658gBaSO_4*\frac{1molBaSO_4}{233.38 gBaSO_4} *\frac{1molBaCl_2}{1molBaSO_4}*\frac{208.23 gBaCl_2}{1molBaCl_2}\\\\m_{BaCl_2}=1.479gBaCl_2

Thus, the mass percentage is calculated as shown below:

\% m=\frac{1.479g}{3.656g}*100 \% \\\\\% m=40.46\%

Regards!

You might be interested in
Number 14? Please :)
ASHA 777 [7]
Evaporated is the answer
4 0
3 years ago
Given two temperatures, 36 °F and 72 °F, which of the following correctly compares the number of opportunities for particles to
Liono4ka [1.6K]

The correct answer is "Greater at 72 °F " hope it helps

5 0
3 years ago
What is the mass of 6 atom(s) of copper in grams?
USPshnik [31]

Answer:

6.33×10¯²² g

Explanation:

From the question given above, the following data were obtained:

Number of atoms = 6 atoms

Mass of copper (Cu) =?

From Avogadro's hypothesis, we understood that:

6.02×10²³ atoms = 1 mole of Cu

But 1 mole of Cu = 63.5 g

Thus,

6.02×10²³ atoms = 63.5 g of Cu

Finally, we shall determine the mass of 6 atoms of copper. This can be obtained as illustrated below:

6.02×10²³ atoms = 63.5 g of Cu

Therefore,

6 atoms = (6 × 63.5) / 6.02×10²³

6 atoms = 6.33×10¯²² g of Cu

Therefore, the mass of 6 atoms of copper is 6.33×10¯²² g.

4 0
3 years ago
The first law of thermodynamics is observed when
krek1111 [17]

Answer:

Explanation:

The first law of Thermodynamics is known as Conservation because it explains that energy is always maintained within a closed system and cannot be created or destroyed. Therefore, this is observed when there is no longer change in temperature in a system. Mainly because the energy is not being transferred to and from another system. Without this transfer of energy, the energy itself gets conserved within the system and the temperature no longer fluctuates.

8 0
2 years ago
In which system does a spontaneous redox reaction produce electrical energy?
Vladimir [108]
Had to look for the options and here is my answer.
When we say that a redox reaction is spontaneous, this would mean that there is a formation of positive voltage <span>across the electrodes of a voltaic cell. Therefore, the system that this kind of reaction produces electrical energy is in a GALVANIC CELL. Hope this helps.</span>
3 0
3 years ago
Other questions:
  • How do bones and muscles help your body move
    12·1 answer
  • What do the electrons affected by illumination do when they are made to vibrate with greater energy?
    14·1 answer
  • Particles very far apart a solid liquid or gas
    10·2 answers
  • WILL MARK BRAINLIEST!!<br><br> What is the percent composition of each element in barium nitrate?
    14·1 answer
  • Living things within an ecosystem
    11·1 answer
  • There are the same number of atoms in a mole of calcium (Ca) than in a
    14·1 answer
  • How many joules of heat are required to heat 100.0g of room temperature water to the boiling point
    9·1 answer
  • Find the % composition for each element in Zinc Chlorate
    12·1 answer
  • When rubbing alcohol and water are at room temperature, which one boils first
    8·2 answers
  • What is the scientific word used to describe the process of the protein in the eggs changing form?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!