To find the molarity of the compound, simply determine the molar mass of MgCl2 and then convert 50 g to moles using the molar mass of the compound. Then convert 150 ml to L = 0.15 L
Then divide the moles amount by the volume in L.
Answer: The charge on a sulfide ion is –2.
Explanation:
The Cambrian period, part of the Paleozoic era, produced the most intense burst of evolution ever known. The Cambrian Explosion saw an incredible diversity of life emerge, including many major animal groups alive today. Among them were the chordates, to which vertebrates (animals with backbones) such as humans belong. These included brachiopods, which lived in shells resembling those of clams or cockles, and animals with jointed, external skeletons known as arthropods—the ancestors of insects, spiders, and crustaceans. These toughened-up creatures represented a crucial innovation: hard bodies offering animals both a defense against enemies and a framework for supporting bigger body sizes.
Answer:
100L of N2
Explanation:
First let us obtain the number of mole of NH3 that occupied 200L at stp. This can be achieved by doing the following:
1mole of NH3 occupied 22.4L at stp.
Therefore, Xmol mole of NH3 will occupy 200L i.e
Xmol of NH3 = 200/22.4 = 8.93moles.
Now let us generate a balanced equation for the reaction.
N2 + 3H2 —> 2NH3
From the equation above,
1mole of N2 produced 2moles of NH3.
Therefore, Xmol of N2 will produce 8.93moles of NH3 i.e
Xmol of N2 = 8.93/2 = 4.47moles
Now let us convert 4.47moles to N2 to Litres. This is illustrated below:
1mole of N2 occupied 22.4L at stp
Therefore, 4.47moles of N2 will occupy = 4.47 x 22.4 = 100L
Therefore, 100L of N2 is used in the reaction
