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Explain why does dichromate (Cr2O72-) have seven oxygen atoms whereas chromate (CrO42-) have only 4 shouldn't dichromate have eight oxygen instead of 4?
A solid mixture weighing 1.372 grams and containing only sodium carbonate and sodium bicarbonate required 29.11mL of 0.734M HCL for a complete titration. what is the grams of sodium carbonate and sodium bicarbonate in this mixture
Classify each of the following as a binary ionic compound, ternary ionic compound, binary molecular compound, or ternary oxyacid. 1.) Hydrazine, N2H4 2.) Nitrous Acid, HN02(aq) 3.) Cobalt(II) Nitride, Co3N2 4.) Sodium Nitride, NaNO2
What is the pH of the solution that results from mixing 50.0 mL of 0.100 M NaOH with 100.0 mL of 0.100 M propanoic acid
What volume (mL) of a concentrated solution of NaOH (6.00 M) must be diluted to 200. mL to make a 0.88 M NaOH solution
Which of the following will give the largest increase in boiling point when added to 1 kg of water. 1 mol Co(NO3)2, 2 mol KCl, 3 mol C2H6O2, and why
if delta h -50.0 kj and delta s -0.500 kjk the reaction is spontaneous below a certain temperature. calculate that
A solution has a hydroxide-ion concentration of 9.22 × 10-5 M. What is its hydronium-ion concentration
The cloth shroud from around a mummy is found to have a 14C activity of 8.8 disintegrations per minute per gram of carbon as compared with living organisms that undergo 15.2 disintegrations per minute per gram of carbon.
a how many coulombs are required to plate a layer of chromium metal 0.30 mm thick on an auto bumper with a total area
what is the hybridization of the central atom in
How many moles of NH4NO2 would be required to form 25 grams of N2 in the following reaction
What are some methods done by latent fingerprints. What are some advantages and disadvantages to latent fingerprints?
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