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A. The new molarity of the diluted solution is 0.047 M
B. The new molarity of the diluted solution is 0.188 M
C. The new molarity of the diluted solution is 4.4 M
D. The new molarity of the diluted solution is 1.28 M
A. How to determine the new molarity
- Volume of stock solution (V₁) = 26.6 mL
- Molarity of stock solution (M₁) = 0.127 M
- Volume of water = 45.4 mL
- Volume of diluted solution (V₂) = 26.6 + 45.4 = 72 mL
- Molarity of diluted solution (M₂) =?
M₁V₁ = M₂V₂
0.127 × 26.6 = M₂ × 72
Divide both side by 72
M₂ = (0.127 × 26.6) / 72
M₂ = 0.047 M
B. How to determine the new molarity
- Volume of stock solution (V₁) = 49.5 mL
- Molarity of stock solution (M₁) = 0.757 M
- Volume of water = 150 mL
- Volume of diluted solution (V₂) = 49.5 + 150 = 199.5 mL
- Molarity of diluted solution (M₂) =?
M₁V₁ = M₂V₂
0.757 ×49.5 = M₂ × 199.5
Divide both side by 199.5
M₂ = (0.757 × 49.5) / 199.5
M₂ = 0.188 M
C. How to determine the new molarity
- Volume of stock solution (V₁) = 102 mL
- Molarity of stock solution (M₁) = 25.8 M
- Volume of water = 500 mL
- Volume of diluted solution (V₂) = 102 + 500 = 602 mL
- Molarity of diluted solution (M₂) =?
M₁V₁ = M₂V₂
25.8 × 102 = M₂ × 602
Divide both side by 602
M₂ = (25.8 × 102) / 602
M₂ = 4.4 M
D. How to determine the new molarity
- Volume of stock solution (V₁) = 741 mL
- Molarity of stock solution (M₁) = 1.81 M
- Volume of water = 308 mL
- Volume of diluted solution (V₂) = 741 + 308 = 1049 mL
- Molarity of diluted solution (M₂) =?
M₁V₁ = M₂V₂
1.81 × 741 = M₂ × 1049
Divide both side by 1049
M₂ = (1.81 × 741) / 1049
M₂ = 1.28 M
Learn more about dilution:
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I would say the answer is A - a stars mass
The majority of stars in the galaxy, including our Sun, Sirius and Alpha Centauri A and B are all main sequence stars.
Mass is the key factor in determining the lifespan of a main sequence star, its size and its luminosity ( brightness)
Two characteristics define brightness: luminosity and magnitude. Luminosity is the amount of light that a star radiates. The size of the star and its surface temperature determine its luminosity. Apparent magnitude of a star is its perceived brightness, factoring in size and distance, while absolute magnitude is its true brightness irrespective of its distance from earth.