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VMariaS [17]
3 years ago
11

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Chemistry
1 answer:
marishachu [46]3 years ago
3 0

Answer:

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3. A magnet attracts a piece of metal. How is this event like a chemical bond?
damaskus [11]

Answer: the answer is b

7 0
2 years ago
What is the percent cr, by mass, in the steel sample? express your answer numerically as a percentage?
djverab [1.8K]
Given:3.40g sample of the steel used to produce 250.0 mLSolution containing Cr2O72−

Assuming all the Cr is contained in the BaCrO4 at the end. 
(0.145 g BaCrO4) / (253.3216 g BaCrO4/mol) x (250.0 mL / 10.0 mL) x (1 mol Cr / 1 mol BaCrO4) x (51.99616 g Cr/mol / (3.40 g) = 0.219 = 21.9% Cr
8 0
3 years ago
Read 2 more answers
Calculate the number of moles of each compound, given the number of molecules.
anastassius [24]

Answer:

1.  2.46\times 10^{21} molecules of CO₂

2. 10⁴ molecules of H₂O

3. 8.75×10³² molecules of C₆H₁₂O₆

Explanation:

1.  2.46\times 10^{21} molecules of CO₂

2. 10⁴ molecules of H₂O

3. 8.75×10³² molecules of C₆H₁₂O₆

5 0
3 years ago
Emphysema can lead to which acid/base disturbance? What would be the compensation?
Nonamiya [84]

Emphysema can lead to respiratory acidosis acid/base disturbance.The compensated respiratory acidosis is typically the result of the chronic condition  , the slow nature of onset giving the kidney time to compensate.

If the primary acid-base disorder is from respiratory , then the kidneys will compensate. If the primary acid-base disorder is from metabolic cause, then the lungs will compensate.The respiratory compensation can be begin within minutes and becomes maximal in 12-24 hours

The respiratory acidosis occurs when breathing out does not get of enough CO_{2} . The increased CO_{2} that  remains results in overly acidic blood. This can results from respiratory problems.

Learn more about acids,

brainly.com/question/14072179

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4 0
1 year ago
How does human consumption of limited resources (energy), impact the biosphere?
evablogger [386]

Human use of land has negative impacts. Human activities contribute to the erosion and pollution of beaches. Deforestation of land can also lead to desertification and a loss of biodiversity.

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