crystaltedbear

A balloon in the shape of sphere is inflated at the rate of 12m3/sec. What is the rate at which the surface area of the balloon is changing when the radius is 6m?

based on VSEPR theory, what is he expected value of the following compounds?

1) C-O-C in CH3-O-CH3

2) C-N-C in CH3-NH-CH3

thanks

I'm having a test tmr n I am not sure how to attempt half life questions. Anyone can suggest any website or videos that can help me understand how to do such questions?

By the way I am taught the eqn A/2=Ae^-kt

(4^x)[3^(2x+1)]=6^x

2^(a+2) - 3 = 7x2^(a-1)

how do i identify the dominant intermolecular forces in this molecules?

CH3NH2 & CH3F

(log square root27 + log square root8 - log square root 125) / (log6-log5) =??

Ps I cant use calculator to solve this qn. Hints will be appreciated thanks:)

in what ways are homologous chromosomes

- genetically similar to each other

- genetically different from each other ?

1)explain in terms of structure and nature of ions why the melting poiint of copper(II)oxide is higher than that of sodium chloride

2) what's the oxidation state of chlorine NaClO3? how do i calculate this qn?

i shall name the two friends A and B

both of them are my friends. previously when the 3 of us were good friends, B and I had the feeling that A was just being our friend for some motive-- like when she needed help she'll come to us and keep in contact with us, other than that she seldom keep in contact and most of the time she leaves us and go with her other friends.

ever since then we tried avoiding her. however both of us decided to give her another chance and started sms-ing her. --> this was about 2to3 weeks ago

then all of a sudden B told me that she decided not to have A as her friend. i personally felt that maybe i should still give her a chance though. then just now i sms-ed B and somehow her reply indicates that if i want A as my friend, i cant be friends with her. if i want A as my friend, B will go with her other group of friends

i'm upset. i want both of them to be my friends like before. i dont want to lose either one of them. what should i do? can anyone give me some advice?

url/address of some blogshops? i would like to shop for some tops and clothes ;)

is it because of the gaps on the fishing net?

what about coarse salt? i've never seen them

eg CaCO3 + 2HCL -> CaCl2 + H2O + CO2

in this reaction excess HCL was used

if the amount of CaCO3 used was reduced by half, will the reaction complete at a shorter time?

why?

find all values of x between 0degree and 360degree inclusive which satisfy the equation

5sin2x + 3cosx = 0

if a material eg diamond has a higher refractive index compared to another material eg water, does that mean that the one with higher refractive index has a higher chance of total internal reflection than the one with a lower refractive index?

if yes, why?

i wan to attend home tuition to focus better but my parents are not comfortable with tutors coming to my house for tutoring. so i was hoping to find a tutor who can give me tuition at his or her house.

what compound when added with sulphuric acid gives a green salt solution?