Atomic radii increase when going down a group and decreases when going towards the anion periods. So A and D.
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The amount of a substance that can dissolve in a liquid (at a any temperature) is called the solubility of the substance, (in this case water).
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Answer:
0.05142 M
Explanation:
Let's consider the neutralization reaction between KHP and NaOH.
KHC₈H₄O₄ + NaOH → H₂O + NaKC₈H₄O₄
12.39 mL of 0.04150 M NaOH were required for the neutralization. The moles that reacted are:
12.39 × 10⁻³ L × 0.04150 mol/L = 5.142 × 10⁻⁴ mol
The molar ratio of KHP to NaOH is 1:1. The moles of KHP that reacted are 5.142 × 10⁻⁴ mol.
5.142 × 10⁻⁴ moles of KHP were in 10 mL of solution. The concentration of the KHP solution is:
5.142 × 10⁻⁴ mol / 10 × 10⁻³ L = 0.05142 M
The cyclists ride a total of 2270.24179 miles.
She needs to do more observations to find out what makes her foot burn before she analyzes the data or does anything else, so she should make observations next.