metal heating

Given that: Initial temperature of metal: 20c Final temperature of metal: 100c Initial temperature of water from calorimeter: 20c Final water temperature from calorimeter: 28c 1. What is estimate of specific heat for metal?: (use 1 cal/gm-°C for water) 2. What is estimate the atomic weight of metal?:

Four compounds have the formula C4H8O...

Four compounds have the formula C4H8O. Identify possible compounds (by name or structure). Compounds A and C have similar boiling points; Compounds B and D have significantly lower boiling points than A and C. See attachment.

Complete and Balance equations

1. Al2(CO3)3---> 2. Pb(Cr2O7)2 + Na3Po4 ---> Na2Cr2O7 + Pb3(PO4)4

Chromate/Dichromate Equilibrium

NaOH is added to K2CrO4 and K2Cr2O7 separately in test tubes and a color change is noted. HCl is added to the same two separte solutions in fresh test tubes and a colourchange is noted. Hcl is added to the first two mixtures NaOH is added two the second until a colour change is noted. What would the equations for the equil ...continues

Chromate/Dichromate Equilibrium

Can you explain fully what happens when H+ is added to a mixture containing BaCrO4(s)and CrO4(aq)ions?What about when HCl and NaOH are added on top to change the colour and form a precipitate?

equations

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gas metal

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ozone

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radioactive decays

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carbon

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