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We were given mass and volume and we were asked to find limiting reactant ,in second question we were asked to find percent by mass of oxygen in CaCO3.
Calculate what the limiting reactant is in the reaction between copper (II) oxide and hydrochloric acid.
CuO(s)+2HCl(aq)->CuCl2(aq)+H2O(l)
Assume that you react 0.698 g of copper (II) oxide with 0.00400 L of 6.00 M HCl ( 0.00400 of 6.00HCl is equal to 0.0240 moles of HCl). Calculate the % by mass of oxygen in CaCo3.
compute the molar mass of vitamin c if a solution of 22.7 g in 100. g of water freezes at -2.40 oc. the kf of water is
Exactly 34.42 mL of 0.1013 M NaOH is used to titrate a 25.00 mL sample of H2SO4. What is the concentration of the sulfuric acid?
A sample of hydgrogen gas, H2, has a volume of 8.56L at a temperature 0C and a pressure of 1.5 atm. Assuming the gas behaves ideally: how many moles of H2 are present in this gas sample
All numerical answers must be reported to the correct number of significant figures. In a routine laboratory analysis, a technician prepare a solution containing 0.126 g of KMnO4 in a 0.250 L volumetric flask. What is the molar concentration (mola..
The excess is titrated with standard 0.101 M KSCN solution, requiring 2.38 mL to reach the red Fe(SCN)2+ endpoint. Calculate the concentration of chloride in the brine in g/L
Initially a container contains 0.75 M HBr and no product. What is the equilibrium concentration of HBr if the equilibrium concentration of H2 is 0.14 M
a 100.0 ml aliquot of .200 M aqueous potassium hydroxide is mixed with 100.0 ml of .200 M aqueous magnesium nitrate. what mass of precipitate is formed? what is the concentration of each ion remaining in the soulution after the reaction is complet..
Find the number of unpaired electrons, magnetic moment and ligand field stabilization energy (LFSE).
Calculate the [H3O+] concentration in 0.45 M solution of barbituric acid, HC4H3N2O3. Ka for barbituric acid is 1.0 X10 ^-5.
Designate each isomer as cis or trans and also indicate if it is chiral or not. indicate the one isomer that dose not have a plane of symmetry but is not chiral.
An alkane with a molecular formula of c18h18 reacts with chlorine in the presence of light and heat to give a single monochloride c8h17cl. What is the most resonalble structure for the starting alkane? and why?
How many electrons can be described by the quantum numbers n=7 and l=2? the answer is 10, why is this
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