█ Question <span>█
</span><span>Four groups of students, in different parts of the world, are investigating the reason why the shape of the moon changes from time to time. If the results of their investigations are considered valid, they would most likely be ___.
</span>█ Answer █
The results would most likely be identical. This is the only way it can come out valid. The answer is letter B.
<span>Hope that helps! ★ <span>If you have further questions about this question or need more help, feel free to comment below or leave me a PM. -UnicornFudge aka Nadia </span></span>
Answer:
9.9L
Explanation:
Using the general gas law constant;
PV = nRT
Where;
P = pressure (atm)
V = volume (litres)
n = number of moles (mol)
R = gas law constant (0.0821 Latm/molK)
T = temperature (K)
According to the information provided in this question; P = 1.20 atm, V = ?, T = 15°C = 15 + 273 = 288K, n = 0.5mol
Hence, using PV = nRT
V = nRT/P
V = 0.5 × 0.0821 × 288/1.20
V = 11.8224/1.2
V = 9.853
Volume = 9.9L
So just balance the eqn and take the numbers infront of it
take the unknown (the one that the qn is asking for) and ratio it with the known variable
and then put in the mol that you know for the known variable and just do math to get the answer for the unknown
This is because no matter how hard you try to shake or combine the oil and vinegar<span> together, they eventually </span>separate<span>. This happens because </span>vinegar<span> and </span>oil<span> are made of very different types of molecules that are attracted to their own kind.</span>
<u>Answer</u>:
Eye colour is one example of a trait caused by the concentration of melanin in genes.
<u>Explanation</u>:
Eye colour is decided based on two distinct factors- pigmentation of the eye’s iris and scattering of the light by the 'stroma of the iris'. It is a 'polygenic phenotypic' character in a human being.
The pigmentation of the iris varies between brown and black, that all depends on melanin concentration in the iris stroma, iris pigment epithelium and the cellular density of trauma. Further, the eye colour genetics are complicated and multiple genes are responsible for same.