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If 4.20 mol of calcium carbide (CaC2) reacts with an excess of water, how many moles of acetylene (C2H2), a gas used in welding, will be produced?
CaC2(s) + 2 H2O(l) Ca(OH)2(aq) + C2H2(g)
If the computer writes electron configurations in the form for Fe for example, [Ar]4s(2)3d(6) which we would write [Ar]4s23d6. Give the electron configuration for Cu2+
Rank the subsequent compounds in order of decreasing surface temperature at a given temperature. CH3OH, CH3CH3, H2C=O
The mole fractions of CO2 and O2 in the atmosphere have been estimated to be 4.2 x 10-5 and 0.2, respectively. Given the Henry's law constants of 1,600 and 43,000 atm, respectively, calculate the ratio of CO2:O2 in both the atmosphere and in the o..
what is minimum grams of acetic acid and of sodium acetate dehydrate that must be used to prepare a buffer with a
Calculate amount of Energy released in formation of one mole of BaO (Not Lattice energy). The radius of barium ion is 1.35 A and Radius of oxide ion
An unidentified metal crystallizes in a body-centred cubic lattice with an edge length of 429 pm. The density of the metal is found to be 0.967 g/cm 3 . What is the identity of the metal
If a solution contains 0.01M Ca^2+, 0.01 M Zn^2+, and 0.01 M Ni^2+ ions and you want to separate them using aqueous (NH4)2C2O2, which ion will precipitate first as an ozalate, CaC2O4, ZnC2O4, or NiC2O4
If 6.40 multiplied by 10-9 mol of 176W emits 1.07 multiplied by 1015 positrons in 1.00 h, what is the decay constant
1. a. for the following two peptides draw the chemical structure of both peptidesindicating where the peptide bonds
What mass of O2 in grams is required for complete combustion of 25.5 g of CH4? What is the total mass of product expected from the combustion of 25.5 g of methane
Define what is the balanced overall net-ionic equation for the reaction between oxalic acid and the permanganate ion, MnO4-
Assuming no energy is transferred to or from the surroundings, calculate the final temperature of the water after all the ice melts. Heat capacity of H2O(s) 37.7 J/(mol X K) Heat capacity of H2O(l) 75.3 J/(mol X K) Enthalpy of fusion H2O 6.01 KJ/m..
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