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morpeh [17]
3 years ago
14

Balance the chemical equation. ___Mg + ___Fe2O^3 -> ___MgO + ___Fe

Chemistry
1 answer:
VMariaS [17]3 years ago
8 0

Answer:

3Mg + Fe₂O₃ → 3MgO + 2Fe.

Explanation:

  • To balance the equation, you should apply the law of conservation of mass for the equations.
  • The law of conservation of mass states that the no. of each atom is equal in both sides (reactants and products).
  • The balanced equation is:

<em>3Mg + Fe₂O₃ → 3MgO + 2Fe.</em>

<em></em>

That 3.0 mole of Mg react with 1.0 mole of Fe₂O₃ to produce 3.0 moles of MgO and 2.0 moles of Fe.

  • The no. of all atoms is the same in both of reactants and products side.

Mg (3), Fe (2), and O (3).

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What is the total mass of solute in 1000. grams of a solution having a concentration of 5 parts per million?
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50 grams or 50,000 mili grams  is the mass of solute in 1000 grams of a solution having a concentration of 5 parts per million.

Explanation:

Total mass of solution = 1000 grams or 1000 ml since 1 gram = 1 ml

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the formula used for parts per million:

parts per million = \frac{mass of solute (mg)}{volume of solution}

putting the values in the equation:

parts per million = \frac{mass of solute}{volume of solvent}

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converting this into mg

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3 years ago
What is the pH for a 0.10 M HCI solution at 25<br> degreesCelsius?
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Answer:

1.0

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