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Chemistry Regents Retakes!

                Let us be brutally honest here. You, the student, have spent the last few weeks agonizing over doing well on the chemistry regents and subsequently had nightmares about the prospects. Even being a victim of Freddie Krueger “Nightmare on Elm Street” seemed to have much more appeal than preparing... read more

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Find No of Moles

Atomic Weight of two elements 'A' and 'B' respectively are 32  and 16 .They combine to form two gases AB2 and AB4 and the Mixture is found to have a vapor  density of 38.4. the no of...

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Calculate N

One mol mixture of Feo and Fe3o4  containing equal moles of each on reaction with excess 02 give 'n' moles of Fe2o3 . Calculate 'N'

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Down to the Wire for Chemistry Regents

The school year is nicely wrapped up and New York students are filled with trepidation at the prospect of encountering the chemistry regents face to face which is just a few short days away. Next Tuesday to be exact. Admittedly, there is not much time to learn concepts that should have been learned earlier on in the school year but if you absorbed just a few critical elements along... read more

Blogs

Down to the Wire for Chemistry Regents

The school year is nicely wrapped up and New York students are filled with trepidation at the prospect of encountering the chemistry regents face to face which is just a few short days away. Next Tuesday to be exact. Admittedly, there is not much time to learn concepts that should have been learned earlier on in the school year but if you absorbed just a few critical elements along... read more

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Chemistry Help

A student reacted with the following unknown metal, M, with HCI and collecyed the following data : mass of metal = 0.300, volume of water displaced = 227.3 mL, temperature of H2 =25C , barometric...

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what is answer

2.5 g of a mixture of a BaO and CaO when heated with h2so4 ,produce 4.713g of the mixed sulphates . Find the percentage of BaO present in the mixture 

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