Chemistry, 14.05.2021 06:40 goosetuave
Mr. Abersold informed his class that, under normal conditions, water boils at 100°C. He wanted to demonstrate that if the conditions change, water can boil at a lower temperature. Mr. Abersold used a hot plate to warm a beaker of water to 43°C. In step 1, he used a syringe to pull water out of the beaker. He made sure that the syringe was sealed and no air was inside. In step 2, he pulled up on the syringe plunger, which increased the space inside the syringe. When he did this, the water began to boil at 43°C, as shown in the image below. What caused the water in the syringe to boil at 43°C? A. The thermal energy of the water increased. B. The pressure on the water decreased. C. The air around the water started moving. D. The water was put into motion by his hand.
Answers: 2
Chemistry, 22.06.2019 07:00
How many moles are in 7.2 x 10^23 carbon molecules? (*round to the nearest hundredth and include the unit "mol c" after your number) question 6 options:
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Chemistry, 22.06.2019 12:30
A50.0 ml sample of gas at 20.0 atm of pressure is compressed to 40.0 atm of pressure at constant temperature. what is the new volume? 0.0100 ml 0.325 ml 25.0 ml 100. ml
Answers: 1
Chemistry, 22.06.2019 20:00
There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. in the first step, calcium carbide and water react to form acetylene and calcium hydroxide: cac2 (s) + 2h2o (g) → c2h2 (g) + caoh2 (s) =δh−414.kj in the second step, acetylene, carbon dioxide and water react to form acrylic acid: 6c2h2 (g) + 3co2 (g) + 4h2o (g) → 5ch2chco2h (g) =δh132.kj calculate the net change in enthalpy for the formation of one mole of acrylic acid from calcium carbide, water and carbon dioxide from these reactions. round your answer to the nearest kj .
Answers: 3
Mr. Abersold informed his class that, under normal conditions, water boils at 100°C. He wanted to de...
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