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How many minutes does it take light from the sun to reach the Earth? (The distance from the sun to Earth is 93 million mi; the speed of light is 3.00 x 10to the 8th power m/s.)
An unknown monoprotic weak acid, HA, has a molar mass of 55.0. A solution contains 2.50 g of HA dissolved 800. mL of solution. The solution has a pH of 2.000. What is the value of Ka for HA
The formula for rust can be represented by Fe2O3. How many moles of Fe are present in 10.0 g of the compound
Calculate the energy of a photon emitted when an electron in a hydrogen atom undergoes a transition
Calculate the standard potential for this cell at 25 °C. Standard reduction potentials can be found here.
A 0.5078g sample of impure nitrobenzene was treated with 1.044g of tin. when the reaction was complete, the residual tin was found to weight 0.338g. Calculate the percentage of nitrobenzene in the sample.
Give the balanced thermochemical equation for the following reactions. show the correct physical state in each equation.
nbspconsidering the given equation where keq 0.016 2hig harr h2g i2gnbspa container contains 0.60 m hydrogen iodide
A 4.10 g nugget of pure gold absorbed 274 J of heat. What was the final temperature of the gold if the initial temperature was 27.0°C? The specific heat of gold is 0.129 J/(g·°C).
Discuss the Hazard classification of areas; class, group, division with respect to flammable gas atmosphere in a chemical process industry and Outline the Principles and standards of intrinsic safety, techniques in the design, use of intrinsically..
The temperature after the reaction is 25.23 C. If the density of final solution is 1.02 g/mL, calculate q, if the specific heat of the solution can be assumed to be equivalent to that of water.
What is the density of Ar gas (molar mass, 39.95 g mol-1) at 21.2oC and 1.10E2 kPa? Give your answer in grams per litre (g L-1), accurate to three significant figures
When 1.0g of snack cake is combusted in a constant-pressure bomb calorimeter with a heat capacity (including its water) of 10.0 kj/c, the temperature of the calorimeter rises by 2.24 c. How many nutritional calories (Calories) are in one serving (..
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