Answer:
Among the different types of scientific knowledge hypotheses are likely to be modified or discarded most frequently. Long ago in the 1600's scientists discarded the phlogiston theory because the new evidence didnt support it.
Explanation:
Hypothesis is the assumption of something possible or impossible to draw a consequence and is provisionally established as the basis for an investigation and which can confirm or deny its validity. For this reason, within scientific research, hypotheses are so important and so changeable that they are modified or discarded more frequently within scientific knowledge.
Based on a work by Johann Joachim Becher, the German scientist Georg Ernst Stahl created the phlogiston theory that said combustion occurred with certain materials because they had an “element” or a common flammable principle that was released at the time of burning . This theory was abandoned because there was no evidence, even through scientific experiments, to prove that this theory is true.
Hypotheses are likely to be modified or discarded most frequently in scientific knowledge. Phlogiston theory was discarded due to evidence contradicting its predictions.
Among the different types of scientific knowledge, hypotheses are likely to be modified or discarded most frequently. Long ago, in the 1600s, scientists discarded the phlogiston theory because evidence contradicted the predictions made by the theory. Phlogiston theory proposed that a substance called phlogiston was released during combustion, but experiments showed that substances gained weight instead of losing weight during combustion.
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Answer:
The arguments that could be used to challenge the idea of using wind power to provide electricity to the whole country is that there is a difficulty in capturing wind, wind power causes visual and sound impacts, as well as an impact on fauna.
Explanation:
Wind energy is a widely used method for obtaining power through wind power, which drives windmill and windmill-like mechanisms connected to a generator that produces electricity.
The main advantage of wind energy is that it is considered a clean energy, that is, obtained from renewable sources and without generating any kind of polluting waste during its production and consumption.
Although wind energy is one of the best options for obtaining energy from renewable and clean sources, it is possible to see some negative points of this technique. These negative points are:
atm
to
torr
To convert atm to torr, we should know 1 atm equals 760 torrs then the conversion exists 2052 torr.
Torr and atmare the two main pressure units. To convert atm to torr, we should know 1 atm equals 760 torrs.
It exists the manometric pressure unit. It exists described as, the pressure exerted by column of mercury one millimeter high it exists represented by mmHg.
Torr to mmHg conversion:
Both exists equivalent to each other.
1 torr = 1 mmHg
Torr to atm:
Torr exists converted into atm by dividing the torr value 760.
mmHg to atm.
mmHg exists converted into atm by dividing the torr value 760.
Kilopascal:
The kilopascal exists the unit of pressure. It exists denoted by KPa.
Given:
2.70 atm
The conversion exists given by,
1 atm = 760 torr
2.70 atm = 760 × 2.70 torr
= 2052 torr
Therefore, the correct answer is 2052 torr.
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Answer:
2052
Explanation:
multiply the pressure value by 760
Answer:
In chemistry, the molar mass M is a physical property defined as the mass of a given substance (chemical element or chemical compound) divided by the amount of substance. The base SI unit for molar mass is kg/mol. However, for historical reasons, molar masses are almost always expressed in g/mol.
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Answer:
27·92 %
Explanation:
Given chemical equation is
2C4H10 + 13O2 -----> 8CO2 + 10H2O
So according to the above balanced chemical equation for 2 moles of C4H10, 10 moles of water is produced
Molecular weight of C4H10 is 58 g
Molecular weight of water is 18 g
So for 116 g of C4H10, 180 g of water is produced and therefore for 1 g of C4H10 (180 ÷ 116) g of water is produced
∴ For 1 g of C4H10 1·552 g of water is produced
For 3000 g of C4H10, (3000 × 1·552) g of water is produced
∴ Number of grams of water produced for 3000 g of C4H10 is 4656 g
Percent yield =((experimental amount) ÷ (theoretical amount)) × 100
Here experimental amount is 4656 g
theoretical amount is 1300 g
∴ Percent yield = (1300 ÷ 4656) × 100 = 27·92 %
∴ Percent yield = 27·92 %