Explanation:
Geologic feature --- Mid oceanic ridge
The mid oceanic ridge is a located in the Atlantic ocean and it runs North and South.
It is made up of system of ridges that separates the Atlantic ocean.
The mid-oceanic ridge is a produced from a divergent margin. As the Atlantic lithospheric plate separates, magma wells up on the ocean floor to fill up the void.
These magma cools and solidifies along the edge of the separating crust.
- Oceanic crust are the ones associated with the mid-oceanic ridges.
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Answer:
D displacement
Explanation:
This is because removing metal means your displacing it
Answer:
Mass% Cr = 85.5%
Explanation:
<u>Given:</u>
Mass of CrBr3 sample = 0.8409 g
Mass of the AgBr precipitate = 1.0638 g
<u>To determine:</u>
The mass percent of Cr in the sample
<u>Calculation:</u>
The reaction of CrBr3 with silver nitrate results in the precipitation of the bromide ion as silver chloride (AgBr) and Cr as soluble Cr(NO3)2
CrBr3(aq) + 3AgNO3(aq)→ 3AgBr(s) + Cr(NO3)3(aq)
Molecular weight of AgBr =187.77 g/mol
Moles of AgBr precipitated is:
Since 1 mole of AgBr contains 1 mole of Cl, therefore:
# moles of Cl = 0.004478 moles
At wt of Cl = 35.45 g/mol
Mass%(Cr) = 100 - 14.50=85.5%
<span>Avogadro's number
represents the number of units in one mole of any substance. This has the value
of 6.022 x 10^23 units / mole. This number can be used to convert the number of
atoms or molecules into number of moles.
</span><span>7.5 X10^23 molecules of H2SO4 ( 1 mol / 6.022x10^23 molecules ) (98.08 g / 1 mol ) = 122.15 grams H2SO4</span>