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3 years ago

Who might benefit financially the most from the EPA's claim

Chemistry

2 answers:

Bezzdna [24]3 years ago

5 0

Answer:

The right answer is Cookware manufacturer who make pans out of steel.

Explanation:

EPA sustains that there shouldn’t be avoidable harm to the health of someone

Then, the cookware made of C-8 materials are damages for the health of the people because a Teflon coating makes them non-adhesive. The fried and roasted food from the cookware is unhealthy and because of that people will shift on strengthen pans when there will be prohibition on the C-8 coated cookware.

kobusy [5.1K]3 years ago

3 0

Answer: cookware manufacturers who make pans out of steel only .

Explanation: Trust me its correct.

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Fossil originally has 254 g of carbon-14 but currently has 127 g of carbon-14 the fossil is most likely

KATRIN_1 [288]

Answer:

The answer to your question is: letter C) 5730

Explanation:

Data

Originally Carbon - 14 254 g

Currently Carbon - 14 127 g

Half-life of Carbon -14 is when half of the original amount of Carbon disintegrates.

Then, if originally there were 254 and now there are 127, only one half life passed.

Half life of carbon -14 is 5730 years old.

8 0

4 years ago

Calculate the Ka for a 0.3 M solution of HA (unknown weak acid) if the pH = 3.65. The reaction can be modelled as HA (aq) + H2O

Levart [38]

The Ka : 1.671 x 10⁻⁷

<h3>Further explanation</h3>

Given

Reaction

HA (aq) + H2O (l) ←→ A- (aq) + H3O+ (aq).

0.3 M HA

pH = 3.65

Required

Solution

pH = - log [H3O+]

$\tt [H_3O^+]=10^{-3.65}=2.239\times 10^{-4}$

ICE method :

HA (aq) ←→ A- (aq) + H3O+ (aq).

0.3 0 0

2.239.10⁻⁴ 2.239.10⁻⁴ 2.239.10⁻⁴

0.3-2.239.10⁻⁴ 2.239.10⁻⁴ 2.239.10⁻⁴

$\tt Ka=\dfrac{[H_3O^+][A^-]}{[HA]}\\\\Ka=\dfrac{(2.239.10^{-4}){^2}}{0.3-2.239.10^{-4}}\\\\Ka=1.671\times 10^{-7}$

5 0

3 years ago

An element consists of 1.40% of an isotope

Dmitriy789 [7]

Answer:

I think it's lead (pb). Hope this helps.

6 0

3 years ago

Read 2 more answers

Which of the following is not apart of daltons atomic theory

KIM [24]

3. Atoms change into other atoms in chemical reactions.

The idea that you can transform one element into another was called alchemy, and was proven untrue a long time ago.

3 0

4 years ago

Read 2 more answers

What is the name of a hydrocarbon that has the formula CH3(CH2)4CCH?

ivann1987 [24]

Hello!

CH3(CH2)4CCH or <span> C7H12

</span> $CH_3 - CH_2 - CH_2 - CH_2 - CH_2 - C \equiv C-H$

<span>hydrocarbon: </span>1-heptyne

5 0

4 years ago