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(a) Given that the molar mass of H2SO4
is 98.1 grams, determine the number of grams of H2SO4
needed to prepare 0.2 L of a 0.5 M H2SO4 solution. Show your work.
(b) What volume, in Liters, of a 0.5 M H2SO4
solution can be prepared by diluting 100 mL of a 4 M H2SO4
solution? Show your work.
One mole of monoatomic ideal gas expands adiabatically at initial temperature T against a constant external pressure of 1 atm. from one litre to two litre.
The surrounding solution has a mass of 1298 and its temperature is changed by 12.7 . If the specific heat is assumed to be 4.18 , calculate the change in heat for the surroundings.
How many grams of oxygen gas are required to produce 7.68 kJ of heat when hydrogen gas burns at constant pressure to produce gaseous water?
Explain why compare the heats of combustion of sugar or chicken fat measured in a bomb calorimeter with the caloric content of those foods
Common sugar or sucrose is a nonvolatile substance of formula C12H22O11. Two teaspoons of sugar in a cup of coffee correspond roughly to 10 g of sugar dissolved in 200 g of water. What is the MOLE FRACTION of sugar in such a solution
Is there a list of hazardous or safe chemicals for Thailand? Where can I find it?
Natural gas is a mixture of many substances, primarily CH4,C2H6,C3H8 and C4H10. Assuming that the total pressure of the gases is 1.34 atm and that their mole ratio is 94 : 4.0 : 1.5 : 0.50, calculate the partial pressure (in atmospheres) of each g..
Complete the following neutralization reaction, and identify the strong acid, strong base, weak acid and/or weak base.
We were given three ways to make an ammonia/ammonium buffer solution. One way was to add solid NH4Cl to aqueous NH3. This way proved to be the best buffer when HCl or NaOH were added. Why is this. Why does the solid/aqueous buffer work the best.
Explain how you would carry out these two reactions and why you obtain the products you indicate
Pure solid NaH2PO4 is dissolved in distilled water, making 100.0ml of solution. 10 ml of this solution is diluted to 100.00 ml to prepare the orignal phosphare standard solution.
We need to make a 4% NaOH solution in ethanol. How much NaOH do we add to 50.0 mL of ethanol to make a 4% NaOH solution. Density of Ethanol=0.789 g/mL molar mass= 46.06844 g/mol and NaOH molar mass= 39.997 g/mol.
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