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A chemist makes an HBr (hydrogen bromide) sample and observes that this sample occupies capacity of 279 mL at the temperature of 65?C and 502 Torr pressure. Then determine what volume would it occupy at zero degree Celsius temperature at same pressure? Express your Answer in units of mL
determine the heat released when (ethene) CH2 CH2 reacts with hydrogen gas and form CH3CH3.If Bond enthalpies given are H H : 436 kJ/mol,C Br : 276 kJ/mol,C C : 612 kJ/mol,C C : 348 kJ/mol,C H : 412 kJ/mol;
The excess of acid needed 16ml of 0.25M Naoh for neutralization. then Calculate the percentage of calcium carbonate and magnesium carbonate?
What is the empirical formula of the compound if Quantitative analysis of a 5.00-g sample of a gaseous compound yielded the following results: 2.00 g sulfur and 3.00 g oxygen?
Using the given reduction potential determine what is the voltage for these given electrochemical cell
Explain briefly that how HCl could test for limestone's presence , use the balanced chemical equation for this and then describe specific reaction that takes place?
Compute the vapor pressure at 25 °C if it is given that the density of H 2 O=0.9971 g/mL , vapor pressure of H 2 O=23.76 torr, molar mass of sucrose, = 342.3 g/mol,
What is the alkali-aggregate reaction? List some of the rock types that are vulnerable to attack by alkaline solutions. Discuss the effect of aggregate size on the phenomenon.
What is the pH of the solution if [OH-] of an ammonia solution is 1.0 X 10-2M?
Determine how would you compare the escape velocity of asteroid Y as compare to the escape velocity of asteroid X?
Compute the amount of heat needed to completely sublime 43.0 grams of solid dry ice at its sublimation temperature. (The heat of sublimation for carbon dioxide =32.3).
Understanding the basics of thermal chemistry and The Second Law of Thermodynamics indicates that a system
Calculate empirical formula of this compound & molecular formula and calculate the molality of solution of sulfuric acid?
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