A30. ml sample of distilled water at 10ºc is added to a 50. ml sample of the same water at 50ºc in a coffee-cup calorimeter. the final temperature of the mixture is closest to30ºc10ºc20ºc60ºc

The final temperature of the mixture is closest to 30ºC

Explanation:

Step 1: Data given

Volume of sample 1 = 30 mL ≈ 30 grams

Temperature of sample 1 = 10 °C

Volume of sample 2 = 50 mL ≈ 50 grams

Temperature of sample 2 = 50 °C

Step 2: Calculate the final temperature

T(final) = (30 g * 10 °C + 50 g * 50 °C) / (50 g + 30 g)

T(final) = (300 + 2500)/80

T(final) = 35 °C

The final temperature of the mixture is closest to30ºC

in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

explanation:

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