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blondinia [14]
2 years ago
12

List and explain 2 positive and 2 negative effects of mining in Guyana​

Chemistry
1 answer:
allsm [11]2 years ago
3 0

Answer:

While positive impacts such as employment and community development projects are important, they do not off-set the potential negatives. We have found mining can negatively affect people by: forcing them from their homes and land. preventing them from accessing clean land and water.

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Which substance is always a product when an Arrhenius acid in an aqueous solution reacts with an Arrhenius base in an aqueous so
svetoff [14.1K]
The answer is (2). The question only ask the production of acid reacts with base. The acid has H+ ion and base has OH- ion. When they react, the production will always contain H2O.
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3 years ago
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Convert 23.92inHg to Pa.
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Answer:

3189.07Pa

Explanation:

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Answer:

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Using the appropriate ksp value from appendix d in the textbook, calculate the ph of a saturated solution of ca(oh)2 .
Alex777 [14]
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CALCULATION:
For the reaction 
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we will use the Ksp expression to solve for the concentration [OH-] and then use the acid base concepts to get the pH:
     Ksp = [Ca2+][OH-]^2

The listed Ksp value is 5.5 x 10^-6. Substituting this to the Ksp expression, we have
     Ksp = 5.5 x 10^-6 = (s) (2s)^2 = 4s^3
     s3 = 5.5x10^-6 / 4

Taking the cube root, we now have
     s = cube root of (5.5x10^-6 / 4)s
        = 0.01112

We know that the value of [OH-] is actually equal to 2s:
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We can now calculate for pOH:          
     pOH = - log [OH-]
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              = 1.65

Therefore, the pH is
     pH = 14 - pOH
           = 14 - 1.65
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4 0
4 years ago
Which segment represents melting?"<br> Temperature (°C)<br> Time (minutes)
zheka24 [161]
The segment that represents melting is time (minutes) and temperature.
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3 years ago
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