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If a system has 4.00 × 102 kcal of work done to it, and releases 5.00 × 102 kJ of heat into its surroundings, what is the change in internal energy of the system?
500.0mL of 0.130 M NaOH is added to 535mL of 0.250 M weak acid ka= 8.22x10-5. Explain what is the pH of the resulting buffer. HA(aq)+ OH-(aq)---> H2O(l)+A-(aq)
on venus the surface atmospheric pressure is about 90 earth atmospheres. what is the venusian atmospheric pressure in
1.00 ml of a 3.45 times 10-4 m solution of oleic acid is diluted with 9.00 ml of petroleum ether forming solution a.
Suppose you could buy a bottle of water claiming that it contains 76 ppm oxygen. The law constant for water is k = 1.2 x 10 -3 M atm -1. What pressure would the water have to be bottled under to obtain the claimed concentration
What state is being described in each case? Type either s for solid, l for liquid (make sure you type an l and not an i), and g for gas (assume ideal). If the statement applies to more than one state
how many grams of neon are in the sign
3 Cu + 8 HNO3=> 3 Cu(NO3)2+ 2 NO + 4 H2O. How many moles of HNO3will react with 247.6 grams of Cu?
Question- A 25.0 ml solution of 0.100 M of CH3COOH is titrated with a 0.200 KOH solution. Calculate the pH after the following additions of the KOH solution
The valve between these Tanks X and Y is opened and the gases are permissible to mix. After the gases have had time to mix, calculate the partial pressure of the oxygen gas?
Gallium crystallizes in a primitive cubic unit cell. The length of an edge of this cube is 362 pm . What is the radius of a gallium atom
Write a balanced molecular equation and a net ionic equation for the reaction aluminum hydroxide with a solution of hydrobromic acid. Include the states of each species.
Consider the following reaction: HC2H3O2 (aq) + H2O (l) = H3O+ (aq) + C2H3O2- (aq) Kc=1.8*10^-5 If a solution initially contains 0.260M HC2H3O2, what is the equilibrium concentration of H3O+ at 25C
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