A 500-G Sample of Liquid Water at 25

question 1

Multiple Choice

A 50.0-g sample of liquid water at 25.0 °C is mixed with 29.0 g of water at 45.0 °C. The final temperature of the water is __________ °C.

• A)102
• B)27.6
• C)35.0
• D)142
• E)32.3

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Definitions:

Covariances

Covariance is a measure used in statistics to determine how much two random variables vary together.

Portfolio Variance

A measurement of the dispersion of returns of a portfolio, indicating the degree of investment risk.

Risky Securities

Financial instruments that carry a higher degree of uncertainty and a higher risk of loss, such as stocks.

Weighted Sum

A calculation that takes various quantities into account, multiplying each by a factor that reflects its importance and then adding these products together.