CuO (s) + CO (g) → Cu (s) + CO₂ (g)
Explanation:
The balanced chemical reaction between copper (II) oxide and carbon monoxide is producing cooper and carbon dioxide:
CuO (s) + CO (g) → Cu (s) + CO₂ (g)
where:
(s) - solid
(g) - gas
To balance the chemical equation the number of atoms of each element entering the reaction have to be equal to the number of atoms of each
element leaving the reaction, in order to conserve the mass.
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balancing chemical equations
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<span>Ionic compounds form crystal lattices, not molecules. The term formula unit is used to indicate the simplest whole-number ratio of ions in the compound.</span>
The volume of 15.7 M H2SO4 is required to prepare 12.0 L of 0.156 M sulfuric acid is 0.12 L
<h3>Data obtained from the question</h3>
From the question given above, the following data were obtained:
- Molarity of stock solution (M₁) = 15.7 M
- Volume of diluted solution (V₂) = 12 L
- Molarity of diluted solution (M₂) = 0.156 M
- Volume of stock solution needed (V₁) = ?
<h3>How to determine the volume of the stock solution needed</h3>
The volume of the stock solution needed can be obtained by using the dilution formula as shown below:
M₁V₁ = M₂V₂
15.7 × V₁ = 0.156 × 12
15.7 × V₁ = 1.872
Divide both side by 15.7
V₁ = 1.872 / 15.7
V₁ = 0.12 L
Thus, the volume of the stock solution needed to prepare the solution is 0.12 L
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Answer:
- line segment of length 8 between the vertices at (-1, -2) and (-1, 6)
Explanation:
The equation can be rearranged to standard form.
(y^2 -4y) -4(x^2 +2x) = 16
(y^2 -4y +4) -4(x^2 +2x +1) = 16 +4 -4
(y -2)^2 -4(x +1)^2 = 16
(y -2)^2 /16 -(x +1)^2/4 = 1
This is of the form ...
(y -k)^2/a^2 -(x -h)^2/b^2 = 1
where the transverse axis is 2a and the center is (h, k). Here, a=4, so 2a = 8.
The transverse axis is a vertical line segment of length 8, centered on (-1, 2).