3 years ago

Why is the research of alternative energy resources important?

2 answers:

8 0

Answer:

Environmental and economic benefits of using renewable energy include: Generating energy that produces no greenhouse gas emissions from fossil fuels and reduces some types of air pollution. Diversifying energy supply and reducing dependence on imported fuels.

Explanation:

guapka [62]3 years ago

5 0

:hsiensownsosjsisjejdnjsje

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A physical reaction is a process in which one or more reactants change into one or more products with different properties. Plea

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the answer is true trust me i got this answer wrong my dumb self chose f.

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3 years ago

What is the law of conservation?

frez [133]

Answer:In physics, a conservation law states that a particular measurable property of an isolated physical system does not change as the system evolves over time. Exact conservation laws include conservation of energy, conservation of linear momentum, conservation of angular momentum, and conservation of electric charge. Wikipedia

Explanation:

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3 years ago

What fraction of the original atoms of the radioactive sample will remain after the given number of half-lives has passed?

meriva

Answer:

1/8

Explanation:

$\frac{1}{ {2}^{3} } = \frac{1}{8}$

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2 years ago

How many moles of CaO are needed to react with excess water to produce 370g of calcium hydroxide?

never [62]

Answer:

5 moles

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RFM 56 18 74

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3 years ago

Calculate the fractional saturation for hemoglobin when the partial pressure of oxygen is 58 mm Hg. Assume hemoglobin is 50% sat

svetlana [45]

Answer:

0.8988

Explanation:

To calculate the fractional saturation of hemoglobin , the formula used is

YO_2= $\frac{(pO_2)^n}{(p50)^n+(pO_2)^n}$

now putting the values

YO_2= $\frac{58^3}{28^3+58^3}$

= $\frac{195112}{21952+195112}$

=0.8988

Therefore, fractional saturation of hemoglobin= 0.8988

where

YO_2= fractional saturation of hemoglobin

pO_2= partial pressure of oxygen

p50= is the pO_2 at which hemoglobin is 50% saturated

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3 years ago