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Explain how many grams of C2H2 must burn according to the equation below in order to heat 2.34x104 grams of H2O from 25*C to 50*C?
C2H2(g) + 5/2 O2(g) > H2O(l) + 2CO2(g) (Delta H = -1212kJ)
Explain what additional piece of information must you look up?
At what temperature does the numerical reading on a Celsius thermometer equal that on a Fahrenheit thermometer
which has the same osomotic pressure as blood, can be prepared by dissolving 0.923 g of NaCl in enough water to produce 100.mL of solution. What is the osmotic pressure of this solution at 25 C. But NaCl dissociates into ions
To treat a burn on your hand, you decide to place an ice cube on the burned skin. The mass of the ice cube is 12.9 g, and its initial temperature is -13.9 °C. The water resulting from the melted ice reaches the temperature of your skin,
A: 2-methyl-1-bromohexane B: 1-bromohexane which of the above compounds will react the fastest with NaI in acetone?
Calculate the mass of silver bromide that will produce 0.023 mol Na3[Ag(S2O3)2].Answer in units of g.
The reaction of iodide ion with hypochlorite ion, OCI - (the active ingredient in a chlorine bleach, such as Chlorox), follows the equation OCI- + I- OI- + CI- It is a rapid reaction that gives the following rate data: What is the overall order of..
An IR spectrum for a sample of this solvent is found to show no appreciable absorbance in the region of 1700 cm-1. Of the given possibilities, what is the most likely identity for this paint solvent
An emerald gemstone is an impure form of the mineral beryl, Be3Al2Si16O18. What is the percentage of silicon in the mineral?
When using paper chromatography to separate components of a mixture, the manual suggests that water is wicked through the paper.
cannot be dehydrated to an alkene without rearrangement. What is the chief product of dehydration?
If densities were addititive, what should be the density of a 50-50 mixture of propylene glycol and distilled water at 20 degrees Celsius? Note: d^20 = 1.0361 g/mL propylene glycol and d^20 = 0.99821 g/mL distilled water.
About 6 x 10^9 g of gold is thought to be dissolved in the oceans of the world. If the total volume of the oceans is 1.5 x 10^21 L, What is the average molar concentration of gold in seawater
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