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If a gaseous compound has a percentage composition of 82.4%nitrogen and 17% hydrogen. Explain what is the empirical formula of the gas
The nickel-cadmium battery cell has a standard potential of +1.20 V. The cell reaction is: 2 NiO(OH)(s) + Cd(s) + H2O(l) --> 2Ni(OH)2(s) + Cd(OH)2(s) What is the standard free energy change for this reaction
If the standard enthalpy of evaporation of CF2Cl2 is 17.4 kJ/mol, compared with change in H(vapor)=41kJ/mol for liquid water. Explain how many grams of liquid CF2Cl2 are required to cool 130.8g of water from 49.4 to 29.4 Celsius. The specific heat..
Calculate delta G
Which ions were present in the original solution? Write net ionic equations for the formation of each of the precipitates observed.
given that the density of solid sodium is 0.968 gcm3 estimate the atomic metallic radius of a na atom. assess the value
Utilizing a periodic table, arrange the subsequent substances according to their expected lattice energies, listing them from lowest lattice energy to the highest: LiCl, KCl, KBr, CaO. Use the appropriate symbol to separate substances in the list..
A flask contains a mixture of Ne(g) and Ar(g). There are 0.250 mol of Ne(g) which exerts a pressure of 205 mmHg. If the Ar(g) exerts a pressure of 492 mmHg.
What is the mole fraction of ethanol in a solution made from mixing 299 grams of ethanol (C2H5OH) and 360 grams of water? (Round your answer to 2 places after the decimal.)
you prepare a buffer solution by dissolving 1.77 g each of benzoic acid hc7h5o2 and sodium benzoate nac7h5o2 in 900.0
A Cu/Cu2+ concentration cell has a voltage of 0.24 V at 25M . The concentration of Cu^2+ in one of the half-cells is 1.5×10-3 . What is the concentration of Cu2+ in the other half-cell?
at a particular temperature the first-order gas-phase reaction n2o5 ----gt 2no2 12 o2 has a half-life for the
How do I know which specific orbital loses an electron in the third ionization step for the Be atom.
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