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insens350 [35]
3 years ago
11

Where should reactions involving the evolution of toxic gases be performed?

Biology
1 answer:
soldier1979 [14.2K]3 years ago
8 0

Experiments involving the evolution of any kind of the harmful gases, lest of all toxic, should never be performed in an open environment. Such reactions involving the toxic gas evolution should be performed in a secured environment, such as the fume hood. This will prevent the toxic gases released from escaping and getting inhaled by the person conducting the experiment.  

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A new car is being built in a factory. One of the factory workers weighs all the parts before it is built. It weighs 2,300 pound
xenn [34]
The answer is true because the weight of all of the parts is 2300 when you put them together they will stay 2,300
3 0
3 years ago
Which of the following is NOT considered a form of precipitation? *
Daniel [21]

Answer:

Lightning is not considered a form of precipitation but rather a discharge of electricity.

4 0
2 years ago
Which organelle is found in both plants and animals:
MrMuchimi

Answer:

The correct answer is E. The organelle that is found in both plants and animals is the Mitochondria.

Explanation:

Mitochondria are cellular organelles responsible for supplying most of the energy necessary for cellular activity (cellular respiration). They act as energy plants of the cell and synthesize ATP at the expense of metabolic fuels (glucose, fatty acids and amino acids). The mitochondria has an outer membrane permeable to ions, metabolites and many polypeptides. This is because it contains proteins that form pores called porins or VDAC (voltage-dependent anionic channel), which allow the passage of molecules up to 10 kDa of mass and an approximate diameter of 2 nm.

8 0
3 years ago
Place the following materials in the order in which they are likely to fossilize. Begin with the material that is most likely to
marusya05 [52]

Answer: correct order--->

1)mammal teeth

2.)bones of an adult mammal quickly buried

3.) bones of an adult mammal left on the surface

4.)soft body parts of any animals

Explanation:

Fossilization is the ability of an organism to be preserved and remain unaltered for a very long time. Through research , it has been found out that Harder  parts of the body tend to remain preserved for a long time  because they  naturally have minerals deposited in them and may only be reduced,  but the softer part or tissues do not get preserved for a long time because being made up of polymer can be disintegrated easily by natural biological and physical processes.

The order of which material will likely fossilize is

1.)mammal teeth

2.)bones of an adult mammal quickly buried

3.) bones of an adult mammal left on the surface

4.)soft body parts of any animals

Reason,

--Teeth and bones biologically contain calcium but the teeth is more tougher and durable than the bone, Even when a  body is decomposed, the teeth most times are not  affected at all.

Bones of an adult mammal left on the surface will decompose faster than the one buried because of the biological (natural decomposing ) and physical processes(temperature, wind, sunglight, rainfall ) which will both act on it at the same time because of its exposure.

- soft body parts of any animals will decompose fastest as bacteria will feed on it immediately since it lacks minerals that can elongate preservation.

5 0
3 years ago
You watched the lab demo video and looked over the lab sheet. You saw how the catalyst (MnO2) affected the rate of reaction as h
artcher [175]

Answer:

I increase the speed of reaction.

It was observed that the reaction speed was being increased since the products were obtained in a less expected time range, that is, in less time.

Explanation:

Catalysts are those that increase the reaction rate and make the reactants quickly turn into products WITHOUT ALTERING THE NATURALITY OF THE REACTION, that is why this happened in this experiment.

7 0
3 years ago
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