Question

predict the number of covalent bonds that the following atoms will form C,H, O, N

Answer 1

C = 4 possible bonds
H = 1 possible bond
O = 2 possible bonds
N = 3 to 4 possible bonds

Answer 2

Thank you, do you mind helping me with another that i need help on

Answer 3

why are hydrogen and van der waals forces considered weak bonds?

Answer 4

because they are constantly being broken and reformed compared to covalent bonds which tend to remain stable

Answer 5

it take less energy to break intermolecular bonds than it does to break covalent bond thus they are considered weak

Answer 6

Such a live saver, I have two more questions that I need clarification on.

Answer 7

what is a simplified way to explain hydrogen bonding between water molecules?

Answer 8

I have no idea what it means by a simplified way to explain hydrogen bonding between water molecules, here is an old note of mine on intermolecular forces

Answer 9

hydrogen bonding between water molecules forms a strong network

Answer 10

due to water having very unique hydrogen bond angles they can form very strong hydrogen bond networks

Answer 11

how great a difference is there in hydrogen ion concentration between a ph of 6 and a ph of 8?

Answer 12

the lower you go on the pH scale the higher the Hydrogen ion concentration, the higher you go the lower the concentration of hydrogen ions

Use the formula
pH = - log [ H+]

Answer 13

I'm pretty sure the concentration is in molarity (M)

Answer 14

do you know how to use the equation? It is pretty easy to solve

Answer 15

no

Answer 16

6 = - log [ H+]
-6 = log [ H+]
10^-6 = 10^log[H+]
10^-6 = H+

Answer 17

you should be able to calculate the concentration of H+ at 8pH by following my examle

Answer 18

Remember
10^log(x) = x

Answer 19

\[b^{\log_b(x)} = x\]

Answer 20

that is a general rule

Answer 21

so at 6pH it has a concentration of 0.000001M

Answer 22

do you know how to calculate the molarity now of hydrogen at 8pH?

Answer 23

once you do just subtract the two concentrations that will give you the difference.

Answer 24

a bit lost

Answer 25

you dont understand the math?

Answer 26

\[\log(x) = \log_{10}(x)\]
we just use use log(x) as short hand for log base 10

Answer 27

the same rule applies

\[10^{\log(x)}\] is the same thing as x

Answer 28

if you told me where you were lost I could be of more help but meh