Because <span> The half-life of carbon-14 is around 5,700 years. So, by measuring the half-live of the sample, we could predict how old the sample actually is.
</span><span>After 50,000 years there is probably less than 1% of the original C-14 left which make it much more accurate to measure, so, the upward limit is put on 50,000 years.</span>
If it has a positive charge it is a cation if negative it is an anion .
I attached a chart that will help you know the charges of the elements
The two systems would be respiratory and circulatory i think not completely sure tho <span />
Answer:
<h3>DEPENDENT VARIABLE</h3>
Explanation:
I HOPE IT HELPS :)
The conjugate base of ch3ch2co2h or propanoic acid would be CH3CH2COO- or propanoate. The conjugate base is what is left after an acid has donated a proton in a reaction. Hope this answers the question. Have a nice day.
