Answer;
-B3
Explanation;
Refrigerants are divided into two groups according to toxicity:
-Class A signifies refrigerants for which toxicity has not been identified at concentrations less than or equal to 400 ppm; and
-Class B signifies refrigerants for which there is evidence of toxicity at concentrations below 400 ppm.
They are also divided into three groups according to flammability:
-Class 1 indicates refrigerants that do not show flame propagation when tested in air at 21°C and 101 kPa;
-Class 2 indicates refrigerants having a lower flammability limit of more than 0.10 kg/m3 at 21°C and 101 kPa and a heat of combustion of less than 19 kJ/kg;
-Class 3 indicates refrigerants that are highly flammable as defined by a lower flammability limit of less than or equal to 0.10 kg/m3 at 21°C and 101 kPa or a heat of combustion greater than or equal to 19 kJ/kg.
-Therefore; the answer for the above question would be Class B and class 3.
During the process of transcription, the information<span>stored </span>in<span> a gene's DNA </span>is<span> transferred to a similar molecule called RNA (ribonucleic acid) </span>in the cell<span>nucleus. ... </span>Translation<span>, the second step </span>in getting<span> from a gene to a protein, takes place </span>in the<span>cytoplasm
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-Payshence xoxo</span>
A. A lab performs a test by giving bacterial colonies the same amount of different antibiotics and growing them under the same conditions.
B. A company that makes pain relief medication tests the effectiveness of their own medicine compared to that of three other brands.
C.
A student tests the attraction of bees to flowers by placing four different flowers in the same location and counting how many bees visit each.
D. A chemistry class performs an experiment in which each reaction has the same amount of starting material and begins at the same
Explanation:
The experiment that has bias the second one in which a company that makes pain relief medication tests the effectiveness of their own medicine compared to that of three other brands.
- A bias in an experiment originates from the experimenter influencing the desired outcome of the experiment.
- The pharmaceutical company will only be able to critique their own product devoid of the view of other pain relief products.
- This experiment will not give a good marketable opinions the company desires.
Learn more:
Experiment brainly.com/question/5249450
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Answer:
Rune Elmqvist is designated with the credits of establishing the first artificial cardiac pacemaker.
Explanation:
The fox, Mountain Lion and turkey vulture. the others are herbivores.
