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Problem- 1) For the thermometer (that is most commonly used) to what degree of precision should you record the temperature?2) What is the estimated uncertainty in the reading of the 50mL graduated cylinder that is the most commonly used?
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calculate the mass of silver chloride required to plate 215 mg of pure silver if silver chloride contains 75.27
How many bonds and how many lone pairs are around the sulfur of SO3? a double or triple bond counts as one bond
sulphur dioxide so2 is an unwelcome result of burning soft coal in power plants. some of the so2 ends up as sulfuric
What is the the molar composition of the products when a stream of CH4 is combusted with 5% excess air if you have 1600 moles per hour of methane being fed into the reactor
What volume will 500 mL of gas at 20°C and a pressure of 420 mm Hg occupy if the temperature is reduced to -80°C and the pressure is increased to 650 mm Hg?
a typical aspirin tablet contains 324mg of aspirin aceytlsalicyclic a momoprotic acid having ka 3.010-4. if you
If the temperature in the laboratory is 22.3oC and the atmospheric pressure is 0.931 atm, what volume would be occupied by the carbon dioxide produced in this reaction (in cm3)?
Problem- A saturated solution of carbon-dioxide in water contains.0682mol/L of carbon-dioxide when the carbon-dioxide partial pressure is 8 atmospheres. What mass of carbon dioxide will escape if the partial pressure is lowered to 3.2 atmospheres
calculate the value of ?Horxn for the following chemical equation: N2H4(l) + O2(g) ? N2(g) + 2 H2O(g)
For each molecule, identify the central atom, the steric number on the central atom, the number of bonded electron pairs on the central atom, and the number of lone pairs on the central atom.
A proton in a linear accelerator has a de Broglie wavelength of 138 pm. what is the speed of the proton?
Question- Element x has 3 isotopic forms: x-28 (27.977 amu, 92.21% abundance) , x-29 (28.976 amu, 4.7% abundance), x-30 (29.974 amu, 3.09% abundance) calculate atomic weight of x
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