Chemistry, 09.07.2017 01:17

# If 6.4 miles of fe react with excess o2, how many miles of fe2o3 can be formed? 4 fe + 3 o2 -> 2 fe2o3

Answers: 3

Chemistry, 04.02.2019 16:20

Astudent wants to shorten the ripening time for tomatoes. he predicts that the more water the seedlings receive, the faster the tomatoes will ripen. he grows 20 tomato plants in a garden in full sunlight that has dry soil, and 20 tomato plants in the same garden where there is more moisture in the soil. he records the time it takes for fruit to develop and ripen on the plants in each location. what is test variable (independent variable) in this experiment? *

Answers: 1

Chemistry, 31.01.2019 21:16

Since the gas in your graduated cylinder is a mixture of butane and water vapor, you must determine the partial pressure of the butane, pbutane, alone. to do this, consult a reference and record the partial pressure of the water vapor, pwater, at the temperature you recorded. use the following formula to compute the partial pressure of the butane. pbutane = atmosphere - pwater use the following combined gas law formula and compute the volume that the butane sample will occupy at stp. (hint: convert both temperatures to kelvin.) pbutane x voriginal = pstandard x vfinal troom tstandard use the following ratio and proportion formula to determine the mass of butane needed to occupy a volume of 22.4 l at stp. grams of butane you used βxβ grams of butane ml of butane corrected to stp = 22,400 ml compute the theoretical molar mass of butane based on its formula and the atomic masses on the periodic table. compare your experimental results from #3 to the theoretical value of #4, computing a percent error of your findings using this formula: % error = measured value - accepted value x 100 accepted value use the following ratio and proportion formula to determine the mass of butane needed to occupy a volume of 22.4 l at stp. need asap

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Chemistry, 31.01.2019 04:04

Which of the following are good traits of a hypothesis? it will be able to be testedit can predict an outcomeit will explain the observationsall of these

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Chemistry, 30.01.2019 01:11

Scientists often have to deal with numbers that are either very large or very small. for example, the radius of the sun is approximately 696,000 kilometers, while bacterial cells are as small as 1.9 Γ 10-4 millimeters. express each number in an alternate form.

Answers: 1

If 6.4 miles of fe react with excess o2, how many miles of fe2o3 can be formed? 4 fe + 3 o2 ->...

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