Solutions of acids and bases are good conductors of electricity because they are capable carrying current. Solutions of such substances have ions in the solution which can carry current through out the solution. Hope this answers the question.
Independent is what you are testing with. dependent is what you ARE testing. constant is the control so like for example the time, or the same material etc. tools should be on your paper depending on what lab it is :)
Hello
The balance chemical reaction is 2Al + 6HCl -à 2AlCl3 + 3H2 Assuming excess amount of HCl because it is not given Mole Al reacted = 13.5 g ( 1 mole/ 27 g) = 0.5 mole Al
Mole H2 = 0.5 mol Al ( 3 mole H2 / 2 mole Al) = 0.75 mole H2
since at STP then 1 mole gas occupies 22.414 L volume H2 = 0.75 mole (22.414 L / mol) = 16.8105 L H2
Have a nice day
Answer:
39.0229 amu
Explanation:
Hello there!
In this case, according to given information, the idea here is to multiply the percent abundance by the mass number of each isotope and then add them all together as shown below:
![=0.0967*38+0.7868*39+0.1134*40+0.0031*41\\\\=3.6746+30.6852+4.536+0.1271\\\\=39.0229amu](https://tex.z-dn.net/?f=%3D0.0967%2A38%2B0.7868%2A39%2B0.1134%2A40%2B0.0031%2A41%5C%5C%5C%5C%3D3.6746%2B30.6852%2B4.536%2B0.1271%5C%5C%5C%5C%3D39.0229amu)
Regards!
Answer:
on https://www.ck12.org/book/peoples-physics-concepts/section/20.1/
Explanation:
it shows for calcium 45 and maybe a possible equation on 3/4th's scroll down?