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3 years ago

What are some possible consequences of global warming

Chemistry

1 answer:

Gelneren [198K]3 years ago

4 0

Answer: I hope this answer helps with ur question

<h2>Explanation: <u><em>These threats are destroying forests, which as Earth's lungs are the very solution to climate change in the first place.</em></u></h2>

<h2><u><em>All over the world, the Rainforest Alliance’s work is assisting communities and businesses as they keep forests healthy and recycling greenhouse gases. We’re helping farming communities adapt to the impacts of climate change, and we’re working with forestry operations as they adopt techniques that benefit ecosystems and pursue innovative carbon sequestration projects.</em></u></h2>

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Polymer formed from methylene diphenyl isocyanate

marin [14]

Answer:

Polymeric MDI is a mixture of. monomeric MDI as well as larger molecular weight oligomers of MDI, and is a brownish. liquid at room temperature and may have a slight odor. Commercial MDI products are. often mixtures of monomeric and polymeric MDI and can contain other additives as well.

Explanation:

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3 years ago

Kendra conducts an experiment. She mixes two chemicals, resulting in a chemical reaction. Based on Kendra's

kondaur [170]

Answer: It changed in identity and properties.

Explanation:

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3 years ago

Matter appears to be conserved in chemical reactions but not in nuclear reactions because:

Vlad [161]

I think the best answer is B. Even this is the broadest case for the Conservation of matter and the one for Energy, the only way this can be applied is in nuclear rxns.

8 0

3 years ago

Read 2 more answers

A scientist wants to replace the letters on the diagram with the features they represent. Which question would BEST help a scien

agasfer [191]

Answer:

Explanation:

7 0

3 years ago

You are asked to prepare 500 mL 0.300 M500 mL 0.300 M acetate buffer at pH 4.904.90 using only pure acetic acid ( MW=60.05 g/mol

defon

Answer:

You will need 9,0 g of acetic acid

Explanation:

The equilibrium acetate-acetic acid is:

CH₃COOH ⇄ CH₃COO⁻ + H⁺ pka = 4,76

Using Henderson-Hasselbalch you will obtain:

pH = pka + log₁₀ $\frac{[A^{-}]}{[HA]}$

Where HA is acetic acid and A⁻ is acetate ion

4,90 = 4,76 + log₁₀ $\frac{[A^{-}]}{[HA]}$

1,38 = $\frac{[A^{-}]}{[HA]}$ <em>(1)</em>

As acetate concentration is 0,300M:

0,300M = [HA] + [A⁻] <em>(2)</em>

Replacing (2) in (1):

[HA] = 0,126 M

And:

[A⁻] = 0,174 M

As you need to produce 500 mL:

0,5 L × 0,126 M = 0,063 moles of acetic acid

0,5 L × 0,174 M = 0,087 moles of acetate

To produce moles of acetate from acetic acid:

CH₃COOH + NaOH → CH₃COO⁻ + Na⁺ + H₂O

Thus, moles of acetate are equivalents to moles of NaOH and all acetates comes from acetic acid, thus:

0,087 moles of acetate + 0,063 moles of acetic acid ≡ 0,15 moles of acetic acid × $\frac{60,05 g}{1mol}$ = <em>9,0 g of acetic acid</em>

I hope it helps!

5 0

3 years ago