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Korolek [52]
1 year ago
6

The atomic number of aluminum is 13. What is the correct designation of the electron configuration of aluminum?.

Chemistry
1 answer:
Svetlanka [38]1 year ago
3 0

Answer:

Its 1s22s22p63s23p1 ik it looks a lil goofy but i think its right

Explanation:

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What is the relationship between the number of protons and the number of electrons in an atom?
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A piece of magnesium is in the shape of a cylinder with a height of 6.62 cm and a diameter of 2.34 cm. If the magnesium sample h
frez [133]

Answer:

0.600 g/cm³

Explanation:

Step 1: Given data

  • Height of the cylinder (h): 6.62 cm
  • Diameter of the cylinder (d): 2.34 cm
  • Mass of the cylinder (m): 17.1 g

Step 2: Calculate the volume of the cylinder

First, we have to determine the radius, which is half of the diameter.

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Then, we use the formula for the volume of the cylinder.

V= π × r² × h

V= π × (1.17 cm)² × 6.62 cm

V = 28.5 cm³

Step 3: Calculate the density (ρ) of the sample

The density is equal to the mass divided by the volume.

ρ = m/V

ρ = 17.1 g/28.5 cm³

ρ = 0.600 g/cm³

8 0
2 years ago
Write the ions present in a solution of k3po4. express your answers as chemical formulas separated by a comma. offset subscripts
olga55 [171]
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HPO₄²⁻ + H₂O ⇄ H₂PO₄⁻ + OH⁻

H₂PO₄⁻ + H₂O ⇄ H₃PO₄ + OH⁻

K⁺, PO₄³⁻, HPO₄²⁻, H₂PO₄⁻, OH⁻
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