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Answer is B because more energy is needed when the electron is removed from next orbital. In all options there are 2 p electrons. But in B theres only 1 so the next electron is removed from next orbital so more energy is needed
Q of conc. Ca+2 is replaced with 2 H so the resulting solution is H2SO4. so H2SO4 + 2KOH--> K2SO4+2H2O
Q14- Use the Ar of each elements. Then calculate the mole ratio. For example- Mg(NO3)2 is 5g and 3.29 is lost meaning MgO is 1.71g. moles of Mg(NO3)2= 5/148=0.034 moles. then moles of MgO= 1.71/40=0.043moles. mole ratio should be 1:1 so its not magnesium. try it with calcium and u get it
Q25- Just substitute n with any integer and youll get the answer. For example take n=1. then u get C3H6 + 4.5O2--> 3CO2 + 3 H2O so it gets balanced
Q37- Its not 2 because 2 will form only one ketone and the other will be an acid. D is the only option with no 2 so chose D
Answer is B because more energy is needed when the electron is removed from next orbital. In all options there are 2 p electrons. But in B theres only 1 so the next electron is removed from next orbital so more energy is needed
lol i prefer sis not bromy godness ... i considered water as a gas
Thanks bro ..
what about the last one
umm yeah i answered that above 
Q of conc. Ca+2 is replaced with 2 H so the resulting solution is H2SO4. so H2SO4 + 2KOH--> K2SO4+2H2O
find moles of KOH. then divide by 2. this gives moles of H2SO4. its equal to moles of CaSO4. then moles=volume*concentration so divide the moles by 50/1000 and u get A
ugh this was my exam! i wasnt able to get it that time :/ is it C anyway?
283+44-286=+41! and im not a bro im a sis!! guess i should change my pic XD
if u still dont get it just let me know
okay the only way i get D is by substituting X with the no. of moles of R from the equations. Then find total moles. The equation which has same no. of moles is the right 1 and i got D that way
maybe changing your avatar will be good is there any tip which i can keep in mind while doing this questions
well main thing is the signs. If the reactants turn to products or vice versa always change the sign! and take your time and write down all steps so you dont confuse urselfumm sorry for saying sis
rarely i get correct answer is hess law
good luck!
well main thing is the signs. If the reactants turn to products or vice versa always change the sign! and take your time and write down all steps so you dont confuse urself
Only 1! 2 will produce only one organic compound with a ketone. The other options all have 2 anyway except D which says only 1 so just do that
else it isnt even 3 because it will also produce only one ketone compound. only one will produce 2 compound and both are ketones
Only 1! 2 will produce only one organic compound with a ketone. The other options all have 2 anyway except D which says only 1 so just do that
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