Answer:
Li is more reactive then Be.
Explanation:
As you go to the farther left and down on the periodic table, the higher that element reactivity is.
Answer:
<h3>The answer is 3.0 g/mL</h3>
Explanation:
The density of a substance can be found by using the formula
![density = \frac{mass}{volume} \\](https://tex.z-dn.net/?f=density%20%3D%20%20%5Cfrac%7Bmass%7D%7Bvolume%7D%20%5C%5C)
From the question
mass = 15 g
volume = 5 mL
We have
![density = \frac{15}{5} \\](https://tex.z-dn.net/?f=density%20%3D%20%20%5Cfrac%7B15%7D%7B5%7D%20%20%5C%5C%20)
We have the final answer as
<h3>3.0 g/mL</h3>
Hope this helps you
1. <span>It helps to maintain cell shape. It holds organelles in place, and for some cells, it enables cell movement.
</span><span><span>2.Suspending cell organelles.
</span><span>3.pushing against the plasma membrane to help the cell keep its shape.
</span><span>4.providing a site for many of the biochemical reactions of the cell.
Here are 4. Pick your favorite</span></span>
Answer:
A proton has the charge of +1.
Explanation:
Answer:
![Q=16.62kJ](https://tex.z-dn.net/?f=Q%3D16.62kJ)
Δ![_CH=48.6kJ/g](https://tex.z-dn.net/?f=_CH%3D48.6kJ%2Fg)
Explanation:
Hello,
A. In this part, we must include the heat effect for pentane and water:
![Q=1000gH_2O*4.184J/(g^0C)*\frac{1kJ}{1000J} *(22.82^0C-20.22^0C)+2.21kJ/^0C*(22.82^0C-20.22^0C)\\Q=16.62kJ](https://tex.z-dn.net/?f=Q%3D1000gH_2O%2A4.184J%2F%28g%5E0C%29%2A%5Cfrac%7B1kJ%7D%7B1000J%7D%20%2A%2822.82%5E0C-20.22%5E0C%29%2B2.21kJ%2F%5E0C%2A%2822.82%5E0C-20.22%5E0C%29%5C%5CQ%3D16.62kJ)
B. In this part, we just consider the previously computed heat and divide it by the sample of pentane as follows:
Δ![_CH=\frac{Q}{m}=\frac{16.6kJ}{0.3423g}= 48.6kJ/g](https://tex.z-dn.net/?f=_CH%3D%5Cfrac%7BQ%7D%7Bm%7D%3D%5Cfrac%7B16.6kJ%7D%7B0.3423g%7D%3D%2048.6kJ%2Fg)
Best regards.