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Elan Coil [88]
3 years ago
13

Scientists notice that many fish are dying in a local lake. Which onsite water quality data would they most likely gather to det

ermine the cause of the fish kill?
A. arsenic and cyanide levels

B.water level and surface area

C.biodiversity and water depth

D. dissolved oxygen and temperature
Chemistry
1 answer:
never [62]3 years ago
8 0

Answer:

D. (Dissolved oxygen and temperature)

Explanation:

Have a nice day and stay safe <3

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If the radius of copper is 0.128 nm, what is the pd of the (100) plane for copper in m-2?
kolbaska11 [484]

Copper has a FCC i.e. face centered cubic crystal structure. The 100 plane is essentially a planar section of the cubic cell where 4 Cu atoms occupy the 4 corners of the plane along with 1 Cu atom at the center of that plane. Each of the Cu atoms in the corners is shared by 4 adjacent unit cells. Thus, there are 2 Cu atoms present in the 100 plane (4*1/4 + 1 = 2).

Now, the planar density PD along the 100 plane is given as:

PD(100) = # atoms in the 100 plane/Area of 100 plane

            = \frac{2}{8R^{2} }

Here R = radius = 0.128 nm = 0.128*10^{-9} m

PD = \frac{2}{8*(0.128*10^{-9}) ^{2} } = 1.526*10^{19} m^{-2}

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Below is the thermochemical equation for the combustion of octane.
Gnom [1K]

5mol produces -10.941KJ

4 mol let produces x KJ

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Write an equilibrium equation that shows bisulfate acting as a weak acid in water.
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Answer:

Explanation:

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