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3 years ago

Question 3: During a severe drought, which will likely cause the most erosion of a farmland?

Chemistry

2 answers:

jekas [21]3 years ago

8 0

Answer:wind and rain water

Explanation:

Dima020 [189]3 years ago

4 0

Answer: Animals and Humans or groundwater

Explanation: If animals and humans are moving around a lot and the human is using machinery, it will cause physical erosion. Ground water may be because that is the only water it may have to erode

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musickatia [10]

Answer:

Here's what I get

Explanation:

3. Molar concentration by formula.

$\begin{array}{rcl}M_{\text{a}}V_{a} & = & M_{\text{b}}V_{b}\\M_{a} \times \text{0.025 00 L} & = & \text{0.3840 mol/L} \times \text{0.034 52 L}\\0.025 00M_{a}\text{ L} & = & \text{0.013 26 mol}\\M_{a}&= &\dfrac{\text{0.013 26 mol}}{\text{0.025 00 L}}\\\\& = &\textbf{0.5302 mol/L}\end{array}$

(i) Comparison of molar concentrations

The formula gives a calculated value of 0.5302 mol·L⁻¹.

Dimensional analysis gives a calculated value of 0.1767 mol·L⁻¹.

The first value is three times the second.

It is wrong because the formula assumes that the acid supplies just enough moles of H⁺ to neutralize the OH⁻ from the NaOH.

Instead, I mol of H₃PO₄ provides 3 mol of H⁺, so your calculated concentration is three times the true value.

(ii) When is the formula acceptable?

The formula is acceptable only when the molar ratio of acid to base is 1:1.

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H₃PO₄ + Al(OH)₃ ⟶ AlPO₄ + 3H₂O

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Is it helpful?

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3 years ago

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Question 3: During a severe drought, which will likely cause the most erosion of a farmland?​

Question 3: During a severe drought, which will likely cause the most erosion of a farmland?