sand is a mixture, not a compound..
silicon dioxide is just a compound
Silicon dioxide contains only silicon and oxygen - no carbon., The only carbon in a sample labelled " silicon dioxide", would be an impurity or contaminant probably on the surface
well when the heart pumps then its the sample
2.34285714g/cm3
it has 6 gram of copper
yes it gets very gren 2. I have a sample of silicon on my desk, and it is a grey colour with shiny conchoidal fracture. It has never resembled green. Perhaps you mean silicone (adhesive / sealant)?
silicon dioxide
No
Silicon dioxide contains only silicon and oxygen - no carbon., The only carbon in a sample labelled " silicon dioxide", would be an impurity or contaminant probably on the surface
Yes they wouldn't have the same composition but not properties!
A sample that cannot be separated into two or more substances by physical means is a compound. A compound is made up of 2 or more elements which cannot be broken down by physical means.
The question cannot be answered for several reasons. The first is that reduced magnesium is not a compound. Next, you did not provide either a weight or a volume of the sample of magnesium. Without either one or the other, one cannot calculate the number of atoms in the sample.
The formula mass of the compound sulfur dioxide, SO2 is 32.1 + 2(16.0) = 64.1Amount of SO2 = mass of pure sample/molar mass = 37.4/64.1 = 0.583mol There are 0.583 moles of sulfur dioxide in a 37.4g pure sample.
well when the heart pumps then its the sample
Unless it is "deionized water" fresh water will contain dissolved minerals. Both magnesium and silicon are likely to be in those dissolved minerals, but I cannot state with certainty if a given water sample contains them unless it has been chemically analyzed.
The mass of silicon is 4 659 g.
2g/cm3
Resistivity of silicon higher than that of germanium