Three of the primary components of air arecarbon dioxide, nitrogen, and oxygen. In a
sample containing a mixture of only these
gases at exactly one atmosphere pressure, the
partial pressures of carbon dioxide and ni-
trogen are given as Pco, = 0.285 torr and
PN = 634.034 torr. What is the partial pres-
sure of oxygen?
Answer in units of torr.
Answers
Answer:
125.681 torr
Explanation:
The formula to calculate the partial pressure of oxygen:
P(O2) = Pcommon - PCO2 - PN2
1 atm = 760 torr
Therefore you need to find the partial pressure of oxygen:
P(O2) = 760 torr -0.285 torr - 634.034 torr =130.013 torr
- Hope that helped!
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Please help me ASAP! Giving out a nice amount of points! Correct answer gets Brainliest! :D Which would be a good example to demonstrate the principle of conservation of energy?A) A stone is crushedB) Light bends around a sharp edgeC) A pendulum swings back and forthD) A balloon inflates when air is blown into it
List the experiment procedures. Some steps have been filled in for you. You may need to adjust the numbers to match the steps you decide on. 1. Identify the variables. 2. Write out your hypothesis in an if/then format. 3.Gather your materials. 4.5.6.7.8.9. Analyze the data. 10. Write your conclusion.
what is a measure of the amount of matter in an object while what is a measure of the force of gravity acting on an object
Answers
Answer:
Heat required to melt 26.0 g of ice at its melting point is 8.66 kJ.
Explanation:
Number of moles of water in 26 g of water: 26× moles
=1.44 moles
The enthalpy change for melting ice is called the entlaphy of fusion. Its value is 6.02 kj/mol.
we have relation as:
q = n × ΔH
where:
q = heat
n = moles
ΔH = enthalpy
So calculating we get,
q= 1.44*6.02 kJ
q= 8.66 kJ
We require 8.66 kJ of energy to melt 26g of ice.
(2) C4H8 (4) P2O5
Answers
Answer: The correct answer is Option 2.
Explanation:
Organic compounds are defined as those compounds in which a covalent bond is present between hydrogen and carbon atom. They are basically known as hydrocarbons. If any atom other than hydrogen and carbon is present, it is not considered as an organic compound.
From the given options:
Option 1:
A, calcium atom is present, so it is not considered as an organic compound.
Option 2:
As., only carbon and hydrogen atom is only present, so it is considered as an organic compound.
Option 3:
As, oxygen atom is present, so it is not considered as an organic compound.
Option 4:
As, phosphorous and oxygen atoms are present, so it is not considered as an organic compound.
From the above information, the correct answer is Option 2.
The formula (2) represents an organic compound.
What is an Organic compound
Organic compounds are compounds that primarily consist of carbon (C) and hydrogen (H), along with other elements such as oxygen, nitrogen, sulfur, and others. The formula represents an organic compound that contains four carbon atoms (C₄) and eight hydrogen atoms (H₈).
These examples represent a small fraction of the vast array of organic compounds found in nature and synthesized in laboratories.
Hence we can say that option 2 is right. represents an organic compound.
Read more on Organic compound here brainly.com/question/6279332
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Answers
A classic example of natural selection is the origin of giraffes long necks. The ancestors of modern giraffes were similar to deer with necks of ordinary length. Here natural selection accomplish Darwin's idea of "survival of the fittest". The correct option is A.
What is natural selection?
The mechanism through which living creature populations adapt and change is defined as the natural selection. The genes which are responsible for the survival of an organism are passed on to the successive generations.
Natural selection states that the organisms which are able to survive and reproduce with the changing environmental conditions are selected by the nature whereas the ones which cannot survive are eliminated.
So the survival of fittest means that the organisms which are suited to the environment will survive. Survival of the fittest is an expression developed from Darwin's theory of evolution.
Thus the correct option is A.
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Answers
If the substance entering the cell was in higher concentration inside the cell than outside the cell, the type of transport that would be required here is known as Active transport. Thus, the correct option for this question is A.
What is Active transport?
Active transport may be defined as a type of transport that occurs against the concentration gradient and therefore it is mediated by carrier proteins. In this type of transport, metabolic energy is utilized in order to move ions or molecules against the concentration gradient. It is directly opposite to passive transport.
Active transport results in the accumulation of solute on one side of the membrane. It is different from the carrier proteins mediated facilitated diffusion. This transport decreases the entropy of the reaction.
Therefore, active transport would be required in order to migrate any substance from a lower concentration to a higher concentration. Thus, the correct option for this question is A.
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To transport the substance inside the cell when the concentration inside the cell is already higher than outside the cell would require active transport because the substance would be moving against its concentration gradient.
Answers
Answer:i believe its water, vinegar, and iodine solution... sorry if wrong
Explanation:
The cornstarch and water mixture acts like a solid sometimes and a liquid at other times. This concoction is an example of a suspension (a mixture of two substances), one of which is finely divided and dispersed in the other. ... When you slap the cornstarch quicksand, you force the long starch molecules closer together.