Which discovery did scientists make when they arranged elements in order of increasing atomic mass?
a.
a repeating pattern of properties
b.
a puzzling series of numbers
c.
alphabetical arrangement of the names of elements
d.
a complex code of patterns and relationships
Answers: 1
Chemistry, 22.06.2019 10:40, rntaran2002
What is the ph of a 0.0010 m hno3? 1.0 3.0 4.0 5.0
Answers: 2
Chemistry, 22.06.2019 13:00, nadikadiaz1
These questions are based on the attached photo. the experiment is about burning magnesium metal with oxygen. 1. write the balanced chemical equation for the reaction you are performing. 2. calculate the mass of magnesium metal used in each trial. o trial 1: o trial 2: 3. calculate the actual yield of magnesium oxide for each trial. o trial 1: o trial 2: 4. magnesium is the limiting reactant in this experiment. calculate the theoretical yield of mgo for each trial. o trial 1: o trial 2: 5. determine the percent yield of mgo for your experiment for each trial. o trial 1: o trial 2: 6. determine the average percent yield of mgo for the two trials. your company currently uses a process with a similar cost of materials that has an average percent yield of 91 percent. if the average percent yield of this process is higher than that, this could save the company money. what is your recommendation to the company? support your recommendation using your data, calculations, and understanding of stoichiometry gathered from this lab.
Answers: 1
Chemistry, 22.06.2019 16:00, winnie45
He table below gives the atomic mass and relative abundance values for the three isotopes of element m. relative abundance (%) atomic mass (amu) 78.99 23.9850 10.00 24.9858 11.01 25.9826 what is the average atomic mass (in amu) of element m? 2.86 5.36 24.30 24.98
Answers: 2
Chemistry, 22.06.2019 19:00, Farhan54019
Which change to the system wood cause the freely-moving piston to lower?
Answers: 1
Which discovery did scientists make when they arranged elements in order of increasing atomic mass?...
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