help!!!

Lead metal is added to 0.100M Cr3+(aq) Pb(s) + 2Cr3+(aq) -> Pb2+(aq) + Cr2+(aq) What is [Pb3+] when equilibrium is reached? What is [Cr2+] when equilibrium is reached? What is [Cr3+] when equilibrium is reached? i solved it buh for sum reason am not getti...

what is the pH of an aqueous solution that is 0.123M NH4Cl

Arrange the following amines in order of decreasing base strength. NH3, NH2Br, CH3NH2, (CH3)2NH

compared to the period of a wave of red light the period of green light is... A)less B)greater C)the same D)none of the above

what were some aspects of the ten percent plan?

A mutual consent registry is relevant to obtaining medical information about what?

Describe two ways that WWII created more oppurtunities for African-Americans. Be sure to use key terms, such as A. Philip Randolph, Executive Order 8802, the "Double V" campaign, and/or the NAACP. Describe two way that WWII stripped away the Constituitona...

Which of the following describes the principle of checks and balances A. congress must make sure that the national budget is balanced. B. one branch of government can check the power of another branch of government. C. power is balanced equally between th...

Bats and birds eating insects at different times of day is an example of(1 point)

describe at least one similarity between Great Britain's and Germany's government

initail 0.120M 0M 0M change -2X X 2X equilbrium (0.120-2X) X 2X Kc= [Pb^2+] [Cr^2+]/ [Cr3+] 3.2x10^-10 = 4x^3/ (1.20-2x_^2 x= 1.048x10 ^-4 n thn i kno i hv 2 substitude in 'x' im jus hving probs wid the calculation part..plz help asap..as tis stuff is due...

im still not getting the answer right!!! =( n it ws my mistake...the concentration is 0.120M

my y = 2.25*10^-5 n what do i do

thanks alot !! =)

ok thank u

umm i tried it,,yet im getting the wrong answer.. this is wht i did: M1 X V1= M2 X V2 V1 = M2 X V2 ---------- M1 = 2.45 X 0.65 ------------ 0.65 = 259.365 ml

thank you so much!!!!

Previously slaves African americans had hopes of entirely earning their freedom and prooving their worth, Philip Randol a civil rights activits he led the brotherhood of "sleeping car porters", he actually caused President Roosevelt to have to issue execu...

check me thats my answer for 1^

is it C.?

i was not guessing! if your not going to help me then you can go, all i wanted was for someone to check my answer.

👍

i have one more question Can you explain why a European country would choose to stay away from the European Union?