Substance with a molar mass
A sample of 4.00 g of a substance with a molar mass of 80.0 g/mol is combusted and the heat released is used to heat 750.0 mL of water from 15.0 degrees Celsius to 22.0 degrees Celsius. Calculate the (delta)H in kJ/mol.
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The vapor pressure of pure water at 25°C is 28.3 mmHg. Estimate the mass in grams of KCl needed per liter of pure water to reduce the vapor pressure of water at 25°C by 5%.
Your client is All's Fair Appliance Company, an appliance wholesaler. Select the most appropriate audit procedure from the following list and enter the number in the appropriate place on the grid.
Store A had sales of $80,000 during March, a contribution margin ratio of 30%, and a segment margin of $11,000. The company as a whole had sales of $200,000, a contribution margin ratio of 36%, and segment margins for the two stores totaling $31,0
Stephen Bosworth, a super salesman contemplating retirement on his fifty-fifth birthday, decides to create a fund on an 9% basis that will enable him to withdraw $26,700per year on June 30.
Each component contains different metals and minerals. The pebbles and shells can easily be separated from the sand. Which term or terms could be used to describe this sample of sand?
Given Fe(CH3COO)3 can dissolve in water and form the following species; Fe3+, Fe(OH)2+, Fe(OH)+2, CH3COOH, CH3COO-. Write charge and mass balance equations.
The Ka for H2PO41- is 6.3 x 10-8. The Ka for HS1- is 1.3 x 10-13. Both are amphoteric substances. a) What does amphoteric mean? Use H2PO41- to describe your definition.
Pacific Airlines has three service departments; ticketing, baggage handling, and aircraft maintenance. Costs of these departments are allocated to two revenue producing departments, domestic and international flights.
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