To calculate the average mass of the element, we take the summation of the product of the isotope and the percent abundance. In this case, the equation becomes 186.207=187*0.626+185*x where x is the percent abundance of 185. The answer is 0.374 or 37.4%. This can also be obtained by 100%-62.6%= 37.4%.
We have mass. Anything that generally includes atoms is matter
the answer was S=d/t = 60/10 = 6m/s, I'm sorry for getting it wrong the first time I answered ^^
I might need a diagram for this, but I have a vague idea of what you are talking about.
If H20 is going left it means the temperature is going lower.
The molecules will condense to slowly become ice
