I just don't have the formulas. I looked at online tutorals and I got confused by everything. I think the formula for the first is Sn = n/2 (a1 + an) but i am not sure. I have no idea for the second one
I am trying to remember the formulas and ways to do this but I am have much trouble! Please help! Thank you!
1) Find the sum of the first 50 terms 1, 8, 15,... using the sum of an arithmetic series formula.
2) Find the sum of the n terms of the arithmetic sequence a1 = 7, a12 = 29, n = 12.
A large cube with a mass of 25 kg is being accelerated across a horizontal frictionless surface by a horizontal force P. A small cube with a mass of 4.0 kg is in contact with the front surface of the large cube and will slide downwards unless P is sufficiently large. The coefficient of the...
Synthesis Reactions---Help
:smile: I am having trouble deciding two different synthesis equations for an experiment done at school.
The expermient consisted of heating magnesium and then adding a few drops of H2O. Reactions where Nirtogen, Magnesium, and H2O. The products where Ammonia...
I have a lab report to do with some different reactions to balance. I'm having a little trouble with a few so pleasee help!
In the following Double Replacement Reaction equation:
HCl + NaOH ---> NaCl + H2O
How can I balance this equation? When balancing it, do I need to regard the...
yeah so i got that part...that the 2- acts for the Al...is the reason why related to the bonding that occurs? the 3+ from the Al couldn't work with the O cause the O has to be a diatomic molecule?
ohh shoot! i see wut i did! i think i was suppose to put the 3 in front of the O2...not the Al2...i think i did that cause i thought that thre wut affect the oxygen if i put it at the beginning
Ok...I'm not entirely sure how to do decompostion equations (balancing) since i just learned it today but...
Al2O3------> ?
I think that the oxygen becomes an O2because it is a diatomic molecule. That I understand.
Do I have to carry the Al2 over so that the factors end up being 3Al2...