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Analysis of an unknown substance showed that it has high boiling point and is brittle. It is an insulator as a solid but conducts electricity when melted, which of the following substances would have those characterisitics? *please explain how to get to answer to understand*
A) HCl
B)Al
C)KBr
D)SiF4
E)I2
a cylinder of compressed gas has a pressure of 4.882 atm on one day. the next day the same cylinder of gas has a pressure of 4.690 atm, and its temperature is 8 degrees celcius. what was the temperature on the previous day?
The boiling point of water at sea level Is 1000C. At higher altitudes, the boiling point of water will be a) lower, because temperatures are lower b) lower, because the atmospheric pressure is lower c) higher, because the altitude is greater.
What is the pH of the buffer after the addition of 0.02 mol of NaOH? C)What is the pH of the buffer after the addition of 0.02 mol of HI? Express Numerically
Design an experiment to determine the density of irregular shaped object. a. Include an introduction describing the calculations that will need to be made.
When hydrogenating methyl trans-cinnamate or dimethyl fumurate using 5% Pd/C at room temperature, how will you determine if the reaction is chemoselective
A solution is prepared by dissolving 270 g of sucrose (C12H22O11) in 624 g of water. What is the vapor pressure of this solution at 30°C? (The vapor pressure of water is 31.8 mmHg at 30°C.)
A 10.9 g sample of a certain gas was introduced into a constant volume container at 21 C. if the container were heated to 161C, how many grams of gas must be vented from the container
what is the mass in grams of a single atom of Ru. The answer is supposed to be in scientific notation as in blank time ten^ blank. I kinda have an idea but not sure
How many grams of ammonium sulfate are needed to make 0.3500 L solution at a concentration of 5.000M.
What is the solubility of barium (II) sulfate in water and also in 0.10M Na2SO4(aq)
The enzyme triose phosphate isomerase catalyzes the isomerization of dihydroxyacetone phosphate. What is the product of this reaction
How many grams of CuSO4 5H2O are needed to prepare 100 ml of a .15 m solution CuSO4
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