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FinnZ [79.3K]
3 years ago
5

In an experiment, some magnesium ribbon is weighed and its mass is recorded. It is then placed in a crucible and heated. Once ho

t enough, it combines with oxygen to form magnesium oxide (MgO). Observe the data table provided. Why does the law of conservation of mass appear violated?
Biology
2 answers:
My name is Ann [436]3 years ago
6 0

Maybe i think I don’t know

Andrews [41]3 years ago
3 0

Answer:

B) Some of the product escaped as a vapor from the crucible.

Explanation:

Impurities and magnesium not reacting completely would not lead to less product necessarily. Nitrogen gas getting into the crucible would lead to a larger product mass.

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Westkost [7]
Seismic waves are waves produced by earthquakes. This occurs when rocks under the earth suddenly break or explode. There are two MAIN TYPES of seismic waves called body waves and surface waves.   <span>Body waves have the capacity to travel through the Earth's inner layers. They have a higher frequency and they are the ones that first occur under water at the onset of an earthquake. They can be subdivided into two types, the primary and secondary waves that arrive at seismic records one after another.

Surface waves can only traverse through the surface of the planet like ripples in the water. These waves can easily be detected on a seismogram result. These waves arrive after body waves and they are the ones mostly responsible for damages and destruction bought by earthquakes.</span>       <span> </span>
8 0
3 years ago
scientist genetally agree thay earth is getting warmer due to whats called the greenhouse effect .what is the main conclusion yo
lyudmila [28]
That would be due to global warming
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3 years ago
How does nerve impulses travel from one neuron to another?
olga2289 [7]

Answer:

(d) Electrical-->Chemical-->Electrical

Explanation:

A nerve impulse is the transmission of an electrical change along the neuron's membrane from the point at which it is stimulated (synapse). The normal direction of impulse in the body is from the cell body to the axon. This nerve impulse, or action potential, is a sudden and rapid change in the transmembrane potential difference.

Normally, the membrane of the neuron is polarized at rest, which means that the ionic constitution of the medium internal to the membrane is different from the external medium, which generates different electrical charges in one medium and the other, so this difference, ie , the potential during rest is negative (-70 mV). The action potential thus consists of a rapid reduction of membrane negativity to 0mV and inversion of this potential to about + 30mV, followed by a rapid return to values slightly more negative than the resting potential of -70mV.

Nervous impulse or action potential, therefore, is a phenomenon of an electrochemical nature and occurs due to changes in the permeability of the neuron membrane. These permeability modifications allow ions to pass across the membrane. Since ions are electrically charged particles, changes also occur in the electric field generated by these charges.

Thus, we can say that the correct answer to this question is: Electrical -> Chemistry -> Electrical

8 0
3 years ago
Why might the the climate in Scotland be relatively mild even though the country is located at a high latitude?
icang [17]
Large bodies of water or ocean currents.
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3 years ago
EXPLAIN The scuba diver is a living system. The scuba gear, or self-
zepelin [54]

Pt.I

All living things needs some form of oxygen to live. In talking about a scuba diver, we are talking about a human, who uses their lungs to breathe, and did not develop the ability to breathe under water. Instead, when in a body of water, we tend to hold our breaths until an opportunity arises for us to exchange our carbon dioxide for oxygen.

Take into account the scuba gear. The scuba gear fits the user, and has a number of protection, including the suit counter-balancing any pressure applied by the deep, and the tank providing much needed oxygen to the user during delayed periods within the water.

Pt.II

<u>How does these two systems interact?</u>

Like as a human is breathing on land or even swimming, the human expels carbon dioxide, which forms into "air bubbles" that are then expelled into the water surrounding. The user then draws air from the pressurized air tank, and is able to breathe as such. This allows the user to stay underwater for much longer than just one breathe, and is able to travel farther inside the deep.

Inside this system, the Oxygen is first input into the oxygen tanks, which are then used by the diver. The diver would draw the oxygen from the tank (output), and he will then expel the used air into the surrounding water.

~

8 0
3 years ago
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