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.
The correct answer for this question is this one: "A. Has the claim been discussed on the news or other reliable media sources?"
There exists the same question from other source that has the following choices:
<span>A. Has the claim been discussed on the news or other reliable media sources?
B. Has the claim been promoted by more than one expert witness?
C. Has the claim been published in more than one periodical?
D. Has the claim been tested numerous times by more than one scientist?</span>
Answer:
Strawberry = $0.75
Cherry = $0.6
Explanation:
x= Strawberry
Y=Cherry
6x + 4y = 6.9 = -1.5x - 1y = -1.725 x 9 = -13.5x - 9y = -15.525
5x + 9y = 9.15
5x + 9y = 9.15
+ -13.5x - 9y = -15.525
--------------------------------
-8.5x = -6.375
x = $0.75
5(0.75) + 9y = 9.15
9y = 5.4
y = $0.6
Answer:
Protists are eukaryotes, which means their cells have a nucleus and other membrane-bound organelles. Most, but not all, protists are single-celled. Other than these features, they have very little in common. You can think about protists as all eukaryotic organisms that are neither animals, nor plants, nor fungi.
