<span>'It is formed when metal atoms lose electrons to nonmetal atoms' is the incorrect statement. This statement is the definition of ionic bonding.
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concentration of the contact solution = 3 %
Explanation:
We have the following data:
10.7 g of hydrogen peroxide H₂O₂
355 g of solution
To calculate the concentration of the contact solution we use the following formula:
concentration = (mass of solute / mass of solution) × 100
concentration of the contact solution = (10.7 / 355) × 100
concentration of the contact solution = 3 %
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concentration of solutions
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Answer:
Approximately .
Explanation:
The gallium here is likely to be produced from a solution using electrolysis. However, the problem did not provide a chemical equation for that process. How many electrons will it take to produce one mole of gallium?
Note the Roman Numeral "" next to . This numeral indicates that the oxidation state of the gallium in this solution is equal to . In other words, each gallium atom is three electrons short from being neutral. It would take three electrons to reduce one of these atoms to its neutral, metallic state in the form of .
As a result, it would take three moles of electrons to deposit one mole of gallium atoms from this gallium solution.
How many electrons are supplied? Start by finding the charge on all the electrons in the unit coulomb. Make sure all values are in their standard units.
.
.
Calculate the number of electrons in moles using the Faraday's constant. This constant gives the size of the charge (in coulombs) on each mole of electrons.
.
It takes three moles of electrons to deposit one mole of gallium atoms . As a result, of electrons would deposit of gallium atoms .
F₂ + 2NaBr→ 2NaF +Br₂
The chemical equation above show the conservation of matter because
The number of F atoms in the reactants equal the number of F atoms in the product (answer C)
<u><em>Explanation</em></u>
According to the law of mass of matter conservation, the number of atoms in the reactants side should be equal to number of atoms in products side.
For example in reaction above the number of F atoms in reactants side equal the number of F atoms in the products side.Therefore the equation above show the conservation of matter.