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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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melomori [17]

Answer:

D)

Explanation:

seems like the most logical option out of all listed.

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Carbon-12 and carbon-13 are isotopes of carbon. Which of the following statements is correct?
kolezko [41]
They both have the same atomic number

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Relacione la teoria cuantica con el numero cuantico correspondite
Xelga [282]
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A student titrated 20 ml of 0.410 m hcl with 0.320 m naoh. determine the volume of naoh needed at equivalence point
Aleksandr-060686 [28]

Answer:

25.6mL NaOH

Explanation:

We are given the Molarity of the solution (\frac{moles}{liters}) and the volume of the solution (.02L).

By multiplying the two together, we can find the moles of solution that are reacted with HCl.

moles = \frac{.410 moles}{L} *.02L

This gives us .0082 moles of HCl.

We then find the moles of NaOH that are needed to react with the HCl using the equation.

HCl + NaOH = NaCl + H_{2} O

As HCl and NaCl have a 1:1 ratio, we need .0082 mol of NaOH.

Dividing this value by the Molarity of the solution

\frac{.0082mol}{.320mol/L}

Gives us the answer, in Liters (.0256), which we can then divide by 100 convert to mL.

3 0
3 years ago
__H3PO4 + __Ca(Oh)2 --&gt; __Ca3(Po4)2 + __H2O Balanced equation
chubhunter [2.5K]

Answer:

3 Ca(OH)_{2} + 2 H_{3}PO_{4} = Ca_{3}(PO_{4})_{2} + 6 H_{2}O; Double Replacement

Explanation:

None

5 0
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