Solve these problems like weighted averages:
The first one:
Multiply the masses (isotope numbers) by the decimal form of the percentage. Add them
0.076 (6) + 0.924 (7) = 6.924
The second one:
0.2 (10) + 0.8 (11) = 10.8
If you think about it, these answers make sense. 6.924 is much closer to 7 than to 6 (since there's a lot more lithium-7 than there is lithium-6). 10.8 is closer to 11 than to 10.
Answer:
Science is the study of the world and how it works through collecting data using the scientific method. Technology is the application of that scientific knowledge to create devices that solve problems and carry out tasks.
Answer: The water (in a subtle sort of way) will now be attracted towards the balloon
I attached a picture to help make sense
<h3><u>Question</u><u>:</u><u>-</u></h3>
In which one element replaces a similar element in a compound?
<h3><u>Answer</u><u>:</u><u>-</u></h3>
A single-replacement reaction
<h3><u>Explanation:</u><u>-</u></h3>
A single-replacement reaction is a reaction in which one element of a compound is replaced by another.