Answers by visitors named: Riana

mol/l

can you tell me the solution?

i got 197g is that correct. am not sure. is that correct.

that part confused me....that is mole acetate x (1 mol Pb(C2H3O2/2 mols C2H3O2) =x do u mean to divie 1 mole of Pb...by c2h3o2 mol?

is is 481.4g ?

i got it...its 120.3g.........right?

hey i have posted another question can you see if you can help me in that?

formula is 2FeCl3 + 6 NaOH -> 2Fe(OH)3 + 6NaCl

it says determine the concentration of four components ions.

i don't know how to find the concentration of ion.....just show me only one of them so i can carry on with the rest.

plz can you help me?

no 2

#2 i think so.

plz just tell me the method. :)

Where below??

I got Cl ion concentration 0.342mol/L

The question says write two equation so we will write 2fecl3 -> 2fe+3 + 6cl1- And 6naoh -> 6na1+ + 6oh1- Is that the way we have to write ???

volume of HCl is 10.0ml. initail volume of NaOH is 1.0ml and final is 21.0ml. this is for the first trial only.

i have to find concentration of NaOH and this is one of the requirement.the answer for the first trial is 0.5 and should there be a unit with it?

2nd and 3rd titration ratio are the same. our teacher said if you got two same your good. and the number of moles of NaOH used will be same for all trails ?

thank you that helped a lot :)

ok i have a question. if i take the average of NaOh concentration then that's the concentration i was looking for right and then i use the same concentration oh NaOH with unknown concentration of H2SO4 to find its concentration ?

The exact question is like this.describe four examples of solutions for which the concentration must be known and exact. (E.g drinking water)

Mean river or lake.

The question says SOLUTIONS?

Ok but I can't use water cause its already in question I need some other.

Thanks that helped.

Its shud be done without using log

But if it had to perish twice, I think I know enough of hate To say that for destruction ice i didn't get these lines.

Homologous means a mixture of same substance.e g Iodide crystals

a. (0,-8) is the vertex

b. axis of symmetry is zero.

then your vertex is (-2,8) and axis will be -1

the vertex can't be (-1,-9) its incorrect.

how did you gt 19d ?

the answer is t25=79 and it sum of 20th term that is S20=710.

reproduce

so i will convert volume of naoh to moles first then to mass and divide it by mass of khp and that will be my ratio?

it just say ratio NaOH used: Mass of KHP ?

and its titration of KHP and NaOH.

yeah crushed sorry my mistake. then what should i use instead of aparted?

yeah healing and dose this poem make sense and is it good or not or any grammatical mistakes ?

a failure lover.

where should i make the changes ?

i changed the sentence number 6 "never saw a heart crushed like a walnut"

its for my poem just wanna know is it okay?

for god sake plz help me.

yeah i know but how will you know when to use this discriminant formula ?

but the anwer is (-3,0)(7,0) how can i get that?

can you explain how you got 1/2 x 5-4x ?

and mol/l ?( the density of the solution is 1.15g/ml)

is the dry hydrogen 98.13kpa? and is the mass 224.1g?

review questions for test...

OK I converted °C to K but the answer now is 4304530J

Did you solved the problem? Is it 2.6×10^6J? I don't know where I am doing it wrong...I checked my work thrice but still the answer is wrong.

But my table have specific heat in J/kg.k And latent heat in kJ/kg That's why I only converted °c to k and kJ into J

Can you please tell me what value of specific heat did you used for q3?

if all the energy used to do the work comes from the burning fat how much fat is used ?

false because acceleration is the time rate of change of velocity. speed is scalar and acceleration vector it cannot be ture.

=2(1)^2(1+7) =16

sorry my mistake its =2(7)^2(1+7) =784 that is c

a=3b+7...eq (1) 4a+9b=70 or 4a=-9b+70...eq (2) multiplying equation i by 3 3(a)=3(3b+7)...eq (1) 3a=9b+21...eq (3) subtracting equation (2) from eq(3) 4a=-9b+70...eq(2) 3a=9b+21...eq (3) a = 49 this is the value of a

the distance between two successive crests in waves is 1.50m, and the source generates 25 crests and 25 troughs in 5.00sec. what is the speed of the waves?

x^2=-1 x=underroot -1.

how ?

can you please explain how?

1) C 2) B

Thanks. Do I have to put Lee also? Because when I am talking with my teacher about him, she just says Moon Shadow?

Thanks. I really don't understand though. Because I need to write words for the letters that spell out Moon Shadow and then right evidence from the story. Please help! I would be really grateful and she told us to use interenet support to find all words.

Please?

Hi again! Whhat do you think of this? M- mature O- obedient O- obnoxious N- nervous S- sarcastic H- hateful A- active D- daring O- observant W- warm-hearted

Please answer!

Yesterday’s high temperature was −8°F. Today’s high temperature is −3°F. a. Write a numerical expression you can use to find the change in temperature from yesterday to today. b. Evaluate your expression and explain what it means.

Thank you for helping! So for part: a) Both the mean and median would remain the same. b) The mean would decrease while the median would remain the same.

The elapsed time is 2 hours and 39 minutes

It would be D I promise