A Mixture of Solid NaCl and CaCl₂ Contains 10

question 80

Multiple Choice

A mixture of solid NaCl and CaCl₂ contains 10.0 g of NaCl, and an unknown amount of CaCl₂. When the entire mixture is dissolved in 1.00 kg of water, the boiling point changes by 0.25 °C. What mass of CaCl₂ was in the original mixture?
K_b for water is 0.512 K^. kg ^. mol^-1.

• A) 5.4 g
• B) 8.1 g
• C) 35.2 g
• D) Not enough data to answer the question
• E) None of the above

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Definitions:

Fetal

Pertaining to a fetus, the developing stage of a mammal after the embryonic stage and before birth.

Placenta

An organ that develops in the uterus during pregnancy, allowing nutrient uptake, waste elimination, and gas exchange through the mother’s blood supply, critical for fetal development.

Lactation

Period after childbirth during which milk is formed in the breasts.

Nutrients

Essential substances obtained from food that are necessary for growth, energy, and maintaining body functions.