Chemistry, 28.08.2019 12:00 daydallas01
Two grams of potassium chloride are completely dissolved in a sample of water in a beaker. this solution is classified as
1. an element
2. a compound
3. a homogeneous mixture
4. a heterogeneous mixture
Answers: 1
Chemistry, 22.06.2019 03:30
What is the number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )
Answers: 1
Chemistry, 22.06.2019 08:30
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 “x” 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
Answers: 1
Chemistry, 22.06.2019 17:30
Observation and experimentation have led many scientists to accept a theory about the origin of the universe. this theory is called the big bang theory. scientific evidence collected and observed by scientists around the world suggests that the universe is ever expanding from a hot and dense initial state. what makes this a scientific theory? (2 points)
Answers: 2
Two grams of potassium chloride are completely dissolved in a sample of water in a beaker. this solu...
Geography, 29.07.2020 14:01
History, 29.07.2020 14:01
Mathematics, 29.07.2020 14:01
Mathematics, 29.07.2020 14:01
English, 29.07.2020 14:01
English, 29.07.2020 14:01
Mathematics, 29.07.2020 14:01
Biology, 29.07.2020 14:01
Mathematics, 29.07.2020 14:01
Geography, 29.07.2020 14:01
Mathematics, 29.07.2020 14:01
Mathematics, 29.07.2020 14:01
English, 29.07.2020 14:01
Mathematics, 29.07.2020 14:01
Mathematics, 29.07.2020 14:01
Mathematics, 29.07.2020 14:01