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3 years ago

Which statement explains how commercial land use negatively impacts watersheds?

Chemistry

2 answers:

prisoha [69]3 years ago

7 0

Answer:

Option B, Production of clothing items makes pollutants that contaminate the water.

Explanation:

Clothes manufacturing is a commercial activity. Most of the clothes, now days are made up of synthetic fibers and hence are non-degradable under normal scenarios.

Textile and fabric industries use lot of water for washing and dyeing which ultimately is disposed of as waste water into the nearby water bodies. This leads to water pollution.

Hence, option B is correct

Feliz [49]3 years ago

7 0

Answer:

Explanation:

i think thats the right answer

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An object with a mass of 5.0 kg accelerates 8.0 m/s2 when an unknown force is applied to it. What is the amount of the force?

atroni [7]

The correct amount of force i believe is
f= 40 newton
i got the answer by using the formula below
force = mass x acceleration
f=5kg *8.0 m/s^2

7 0

3 years ago

How much heat (in kilojoules) is evolved or absorbed in the reaction of 1.90 g of na with h2o? 2na(s) 2h2o(l)→2naoh(aq) h2(

myrzilka [38]

Do you have a screen shot or picture of the problem?

3 0

3 years ago

when copper sulfide is partially roasted in air (reaction with o2), copper sulfite is formed first. subsequently, upon heating,

Lyrx [107]

The question is incomplete, complete question is:

When copper(I) sulfide is partially roasted in air (reaction with oxygen), copper(I) sulfite is formed first. subsequently, upon heating, the copper sulfite thermally decomposes to copper(I) oxide and sulfur dioxide. Write balanced chemical equations for these two reactions.

Answer:

The balanced chemical equations for these two reactions:

$2Cu_2S(s)+3O_2(g)\rightarrow 2Cu_2SO_3(s)$

$Cu_2SO_3(s)\overset{heat}\rightarrow Cu_2O(s)+SO_2(g)$

Explanation:

On partial roasting of copper sulfide in an air. The balanced chemical reaction is given as:

$2Cu_2S(s)+3O_2(g)\rightarrow 2Cu_2SO_3(s)$

On further heating of copper(I) sulfite it get decomposes into copper oxide and sulfur dioxide. The balanced chemical reaction is given as:

$Cu_2SO_3(s)\overset{heat}\rightarrow Cu_2O(s)+SO_2(g)$

5 0

3 years ago

How many grams are in 10.25 moles of zinc chromate?

Kobotan [32]

Answer:

1859.4 g of ZnCrO₄ in 10.25 moles

Explanation:

First of all, we determine the molecular formula of the compound:

Zinc → Zn²⁺ (cation)

Chromate → CrO₄⁻² (anion)

Zinc chromate → ZnCrO₄

Molar mass for the compound is:

Molar mass of Zn + Molar mass of Cr + (Molar mass of O) . 4 = 181.41 g/mol

65.41 g/mol + 52 g/mol + 16 g/mol . 4 = 181.41 g/mol

Let's apply this conversion factor: 10.25 mol . 181.41 g/mol = 1859.4 g

5 0

3 years ago

Which of the following statements best defines Le Châtelier's principle?

8_murik_8 [283]

The answer is B.

This is the definition of La Châtelier's principle: <span>When the equilibrium of a system is disturbed, the system makes adjustments to restore equilibrium.</span>

3 0

3 years ago