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The Cliffs of Dover are chalk cliffs found along the English Channel near Dover, England. The Scarborough Bluffs are limestone cliffs along the north shore of Lake Ontario. Both formations are largely made out of calcium carbonate and both are eroding at an alarming rate. Compute the solubility of calcium carbonate in both seawater also lake water suppose the ion concentration in lake water is negligible and determine if seawater is a greater threat to the Cliffs of Dover than lake water is to the Scarborough Bluffs
What are the boiling point and freezing point of a 2.58 m solution of naphthalene in benzene. (The boiling point and freezing point of benzene are 80.1°C and 5.5°C, respectively.) boiling point °C freezing point °C
CH4(g) + 3 Cl2(g) CHCl3(g) + 3 HCl(g) How many grams of CH4 is needed to produce 43.0 g CHCl3?
In the gravimetric determination of Zn^2+, 2.2024 g sample was dissolved and made up to volume in a 100.0 mL flask. A 10.0 mL aliquot were precipitated by adding a soluble pyrophosphate salt and heating the precipitate to a solid Zn2P2O7 (304.728 ..
what is the formula for the ionic compounds formed by magnesium ions and calcium ions with nitrate ions?
what is the value of equilibrium constant Kp if the total pressure is 11 atm?
What is the change is volume when 1.00 mol of CH4 reacts with 2.00 mol O2? What is the w for this chnage? Calculate the change in internal energy, U, for the change indicated by the chemical equation
how much oxygen is required to support the aerobic biodegradation of the bod5 material in a storm water sewage
Find the total number of Coulomb potential energy terms and the number of electron-electron repulsion terms, for a) a boron atom B; b) an iodine atom I
Potassium hydrogen phthalate (also known as KHP) KHC8H4O4, is frequently used a the neutralization standard for sodium hydroxide. What mass of KHP will react with 25.00 mL of 1.654 M NAOH
Calculate the frequency of the light emitted when an electron in a hydrogen atom makes each of the following transitions.
A pipet delivers 10.5, 10.3, 10.9 and 10.7 ml. (a)find the mean volume and deviation from the mean for each and calculate the average deviation from the mean. (b) calculate the relative deviation (in %) for this set of data.
A buffer containing 0.4316M of acid, HA, and 0.1549M of its conjugate base, A- has a pH of 2.20. What is the pH after 0.0019 mol NaOH
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