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A sample of 1.5 grams of unknown alkali metal carbonate that was dissolved in H2O, and 31.10mL of 0.350M CaCl2 was needed to precipitate all the carbonate ions as CaCO3.can you find out the name and formula of the unknown compound.
An element that is crystallized in a face-centered cubic lattice. If the density of the element = 19.3 g/cm3, the length(l) of an edge of the unit cell = 0.408 nm, determine the identity of the element?
at equilibrium the flask containing the reacting mixturenis 4 cog --gt nico4gcontains 232 torr co 1240 torr nico4 and
butane has a heat of vaporization of 22.44 kJ/mol and a normal boiling point of -.4 degrees Celsius. A 250 mL sealed flask contains .75 g of butane at -22 degrees C.
What speed would an O2 molecule have if it had the same momentum as a photon of 700 nm wavelength
If I have .0888g of potassium hydrogen sulfate, its density is 2.322g/mL and its molecular weight is 136.17g/mol how many mols do I have
A buffer is prepared by adding 1.50X 10^2 ml of 0.250 M NaOH to 2.50X10^2 ml of 0.350 M weak acid, HB. The solution is diluted to 1.00 L. If the pH of the resulting solution is 6.55, what is the pKa of the weak acid
2 NH3(g) + 3 O2(g) + 2 CH4(g) → 2 HCN(g) + 6 H2O(g) If 5.46x10^3 kg each of NH3, O2, and CH4 are reacted, what mass of HCN and of H2O will be produced, assuming 100% yield?
Please explain the following technical terms used in mass spectrometry: a) Molecular ion,
Rank the compounds in each group according to their reactivity toward electrophilic substitution. (a) Fluorobenzene, benzaldehyde, o-xylene (b) Benzonitrile, p-methylbenzonitrile, p-methoxybenzonitrile
If you have 410.0 mL of water at 25.00 °C and add 140.0 mL of water at 95.00 °C, what is the final temperature of the mixture. Use 1.00 g/mL as the density of water.
How much heat (in kJ) is needed to convert 866 g of ice at -10 degress celsius to steam at 126 degrees Celsius? (The specific heats of ice and steam are 2.03 and 1.99 J/g x respectively)
What mass of solid sodium fluoride (molar mass = 41.99 g/mol) should be added to 1.0 L of 0.23M hydrofluoric acid to make a buffer with a pH of 2.94? (Ka of HF = 1.36 x 10-3)
what is the K value for compound Z in the biphasic system, 2) how much do you remove in each individual extraction
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