Physics, 27.06.2019 00:30 bennettaly2452
during a science lesson on changes, ms. sloan's students made mixtures of sulfur (the yellow substance) and iron filings (the black substance. ms. sloan challenged her students to separate the two substances and one group easily completed the task by using a magnet to lift the iron filings from the mixture.
next, ms. sloan poured the same mixture into a test tube and heated it in the bunsen burner flame.
what was the result of heating the mixture? all but one choice is correct.
a) a chemical change took place.
b) a chemical compound, iron sulfide, was formed.
c) both substances melted and became a solution.
d) the iron filings could not be separated with a magnet.
Answers: 2
Physics, 22.06.2019 10:00, kanonhuffmanp3rnmy
The frequencies refer to the sample data collected from a population of interest when performing a hypothesis test comparing two or more population proportions.
Answers: 2
Physics, 22.06.2019 12:20, macycj8
A2.0 μf capacitor and a 4.0 μf capacitor are connected in series across a 0.827-kv potential. the charged capacitors are then disconnected from the source and connected to each other with terminals of like sign together. find the voltage across each capacitor.
Answers: 2
during a science lesson on changes, ms. sloan's students made mixtures of sulfur (the yellow substan...
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