Chemistry, 01.07.2020 18:01 weridness80
1. Dust particles move randomly in one direction / all directions.
2. The dust particles are supported by a fluid. The fluid is a gas / liquid.
3. You cannot see the gas / dust particles directly as they are too small, but they are there.
4. The gas particles move slowly / quickly in random directions.
5. The particles have many / few collisions which means they bump into each other.
6. Each time a gas particle hits a dust particle, it moves away in the same / a different direction.
7. Robert Brown first observed this with pollen / sugar particles in water. 8. In this case, the fluid was a gas / liquid.
9.The pollen grains appeared to jiggle randomly because they were colliding with water molecules / air particles.
Answers: 2
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Marcel just purchased 1.69 grams of iron fillings in order to make living putty for his 6 year old niece. how many moles of iron are made in his sample?
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Chemistry, 22.06.2019 22:30
Which of these statements best explains why space exploration should be encouraged? it prepares humans to live without oxygen. it dispel myths about objects in space. it prevents comets and asteroids from striking earth. it creates technology to absorb harmful radiations in space.
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Chemistry, 23.06.2019 00:20
Steam reforming of methane ( ch4) produces "synthesis gas," a mixture of carbon monoxide gas and hydrogen gas, which is the starting point for many important industrial chemical syntheses. an industrial chemist studying this reaction fills a 1.5 l flask with 3.5 atm of methane gas and 1.3 atm of water vapor at 43.0°c. he then raises the temperature, and when the mixture has come to equilibrium measures the partial pressure of carbon monoxide gas to be 1 .0 atm. calculate the pressure equilibrium constant for the steam reforming of methane at the final temperature of the mixture. round your answer to 2 significant digits.
Answers: 1
Chemistry, 23.06.2019 06:20
Why is it that 85.48 rounded to two significant figures is 85 and not 86?
Answers: 1
1. Dust particles move randomly in one direction / all directions.
2. The dust particles are suppor...
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