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Zepler [3.9K]
3 years ago
13

Can stars less massive than our sun produce elements up to iron?

Chemistry
1 answer:
Jobisdone [24]3 years ago
6 0

Answer:After the hydrogen in the star's core is exhausted, the star can fuse helium to form progressively heavier elements, carbon and oxygen and so on, until iron and nickel are formed. ... Supernova explosions result when the cores of massive stars have exhausted their fuel supplies and burned everything into iron and nickel.

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A teacher has asked some groups of students to investigate the relationship between the organ systems of the human body. One gro
liberstina [14]

Answer: The digestive system breaks down food into nutrients that are transported by the circulatory system.

Explanation:

An organ system includes the organs which are linked to one another to perform a physiological function in the body of the organism. The digestion is a complex process in which the food is being broken down into sub-components so that it can be assimilated in the body. The digestive system involves the multiple organs like mouth, esophagus, stomach, intestines and others. The food being digested is absorbed in the bloodstream, which circulate in the vital organs of the body like lungs, heart, vascular system hence, the blood becomes the part of the circulatory system.

Thus it can be said that the argument of children that the two systems are related is justified by the digestive and circulatory system of the body.

5 0
3 years ago
How does entropy change with pressure?
nydimaria [60]
The entropy will increase in pressure if you increase the pressure on the system the volume decrease the energies of the particles are in a smaller space so they are less spread out
8 0
3 years ago
Which would be a common-sense practice in a lab environment??
lana66690 [7]
I think you forgot to give the options along with the question. I am answering the question based on my research and knowledge. Using safe research practices would be a very good <span>common-sense practice in a lab environment. I hope that this is the answer that has actually come to your desired help.</span>
3 0
3 years ago
Why did so many people move to California in the 1840's
lisabon 2012 [21]

In 1840, California was part of Mexico and gold wasn't discovered (in large quantities) until 1848. CA had a very small population in 1840 with even fewer foreigners including Americans, English/Irish, Russians, etc.  

There wasn't much migration to CA in 1840, but those that did migrate, went there basically to get away from "civilization" and make a new start on life. Mexican authorities did not have much control so CA was pretty much self-governing.

There you go Hope that helped.

4 0
4 years ago
Read 2 more answers
An aqueous solution is 0.467 m in hcl. what is the molality of the solution if the density is 1.23 g/ml?
Reika [66]
Answer:
molarity = 0.385 moles/kg

Explanation:
Assume that the volume of the aqueous solution given is 1 liter = 1000 ml
Now, density can be calculated using the following rule:
density = mass / volume
Therefore:
mass = density * volume = 1.23 * 1000 = 1230 grams
Now, 0.467 m/L * 1L = 0.467 moles of HCl
We will get the mass of the 0.467 moles of HCl as follows:
mass = molar mass * number of moles = (1+35.5)*0.467 = 17.0455 grams
Now, we have the mass of the solution (water + HCl) calculated as 1230 grams and the mass of the HCl calculated as 17.0455 grams. We can use this information to get the mass of water as follows:
mass of water = 1230 - 17.0455 = 1212.9545 grams
Finally, we will get the molarity as follows:
molarity = number of moles of solute / kg of solution
molarity = (0.467) / (1212.9594*10^-3)
molarity = 0.385 mole/kg 

Hope this helps :)

5 0
3 years ago
Read 2 more answers
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