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Is U-235 U236 U238 isotopes?
what is the mass of 2.90x10^2 L of a liquid if the density is 1.025 g/cm^3
While making the lewis structure of NO3- we make it normally but while making the lewis structure for H2SO4 we consider the formal charge of the sulphur the central atom to be zero then the structure is completed.. Why like this? in the lewis structure of NO3- is not zero still the structure is correct but in H2SO4 after putting all the electrons correctly then we check the formal charge to be zero then only our structure is completed.. why?
Geoffrey used 2.498g of a mixture of CuSO4 x 5H20 and salicylic acid in this experiment. He recovered 1.324g of salicylic acid and 1.247 g of CuSO4 x 5H2O. What is the % salicylic acid in the original mixture? What is the % CuSO4 x 5H2O in the original mixture?
What are the advantages and disadvantages of having Ethanoic acid, citric acid and sulfamic acid as desclaers? answer please.
Rank the following from strongest ion attractions to weakest ion attractions.

a) Al 2(subscript)O3(subscript)
b) LiF
c) KF
d) CaO
e) KNO3(subscript)
f) CaF2(subscript)
convert 15nm into km
how to break bond in carbon dieoxide
The average mass of a metal sample was 10.089g and the average volume, 1.28 mL. What is the density of the metal in g/mL?
sulfonyl amide is solved in acetone. what will be the vapour pressure of the solution in which there is 5gram of sulfonyl amide is present in 8grams acetone.the tempreture is 10 centigrade.the vapour pressure of pure acetone in 10 centigrade is 400 mmHg
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