The average molar mass of an atom is equal to the summation of the molar mass of the isotopes multiplied by their relative abundance. In this case, we substitute and use the formula:
MW ave = 49.946044 amu*0.04345 + <span>51.940508 amu * 0.83789 + </span><span> 52.940649 amu * 0.09501 + </span><span>53.93880 amu * 0.02365 = 51.966 amu.
Answer is C</span>
Answer:
The sun is not yellow.
Explanation:
sun can look yellow or red whenever we see the sunlight at sunrise or sunset, when it becomes low on the horizon. That's only how the wavelengths of the low frequency (green , blue, magenta) are dispersed across the planet's crust, just as the tiny waves are distributed along the sea by huge rocks.
Answer:
because the orange is unripe
The number is written in scientific notation.
The significant figures are the numbers known precisely plus 1 digit that is uncertain.
When the numbers are expressed in scientific notation all the digits before 10^n are significant.
So, 7 and 8 are significant figures and the answer is that the number of significant figures is 2.
Answer: 2