Please help me to solve this. How The atomic musses of 14 N7 (99. 64 percent) and 15N7 (0.36 percent) are 14.00307 amu and 15.0001 amu, respectively. Calculate the average atomic mass of nitrogen. The percentages in parentheses denote the relative abundances C01β?
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Apure solvent has a vapor pressure the vapor pressure of a solution. a. equal to b. lower than c. higher than
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Scientists are often interested in knowing the molar heat of combustion β the heat released during the combustion of one mole of a substance. use the periodic table to find molar masses. how many moles of ethanol are present in the sample?
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Can someone me out on this question for my national 5 chemistry homework
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Ms. sullivan's class is designing a miniature roller coaster. after first setting it up, they find that it didn't have enough speed to go through the loop de loop. instead of taking out the loop, they decide to increase the height of the first hill the coaster goes down, and this adds the speed needed to make it through the loop. what would be a drawback to this plan in real life? a) no one likes loop de loops. b) there is no downside to this plan. c) a higher hill means a scarier ride. d) a higher hill takes more time and material to build.
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Please help me to solve this.
How The atomic musses of 14 N7 (99. 64 percent) and 15N7 (0.36 percen...
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