Answer:
0.238 M
Explanation:
A 17.00 mL sample of the dilute solution was found to contain 0.220 M ClO₃⁻(aq). The concentration is an intensive property, so the concentration in the 52.00 mL is also 0.220 M ClO₃⁻(aq). We can find the initial concentration of ClO₃⁻ using the dilution rule.
C₁.V₁ = C₂.V₂
C₁ × 24.00 mL = 0.220 M × 52.00 mL
C₁ = 0.477 M
The concentration of Pb(ClO₃)₂ is:

Answer:
9kg
Explanation:
According to Newton's second law, Force=Mass x Acceleration.
Since we have the Force and the Acceleration, we can plug the values in and solve for mass using this equation:
90N = Mass x 10m/s
Divide both sides by 10:
90/10=Mass x 10/10
Mass = 9
The Mass of the object is 9kg.
Hope this helped!
Must be C because the liquid fuel is Codium nitrate to be used in rocket engines
Answer:

Explanation:
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