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g100num [7]
3 years ago
6

Choose the word that best completes this sentence. Welding in confined spaces or on stainless steel generates _____________ a ve

ry toxic chemical.
a. Carbon monoxide
b. Hexavalent chromium
c. Hydrogen sulfide
d. Solvent vapors
Chemistry
2 answers:
Aleks04 [339]3 years ago
6 0

Correct answer choice is :


B) Hexavalent chromium


Explanation:


Mixtures may be utilized as colors in dyes, paints, inks, and synthetics. It also may be utilized as an anticorrosive tool added to paints, primers, and other exterior layers. The Cr(VI) compound chromic acid is utilized to electroplate chromium onto alloy parts to give a beautiful or shielding sheet.


Drupady [299]3 years ago
5 0
<span>Welding in confined spaces or on stainless steel generates (B) Hexavalent Chromium a very toxic chemical. Hexavalent chromium are chemical compounds that has a chromium with an oxidation state of +6. It is commonly used in textile dyes and wood preservation to avoid corrosion and conversion coatings.</span>
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Answer:

3 bags are required.

Explanation:

Find the number of mg needed for 150 pounds

150 pounds * 5 mg/pound = 750 mg

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x bags = 750 mg               Cross multiply

250 * x= 750                      Divide by 250

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3 years ago
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1.667L of a 0.30M BaCl₂ solution

Explanation:

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<em />

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In a 0.30M BaCl₂ solution there are 0.30 moles of BaCl₂ in 1 liter of solution.

Now, in your solution you have 500mmol of BaCl₂ = 0.500 moles of BaCl₂ (1000 mmol = 1 mol). Thus, 0.500 moles of BaCl₂ are present in:

0.500 moles * (1L / 0.30 moles) =

<h3>1.667L of a 0.30M BaCl₂ solution</h3>
5 0
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