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A volume of 95.0ml of h2o is initially at room temperature (22.0c). A chilled steel rod at 2.00c is placed in the water. If the final temperature of the system is 21.1c , what is the mass of the steel bar? Use the following values: specific heat of water = 4.18j/gc specific heat of steel = 0.452 j/gc Express your answer to three significant figures and include the appropriate units. mass of the steel =
Calculate the vapor pressure of a solution of 20 g of benzene (C6H6) and 20 g of toluene (C7H8) at 90 oC. Is the boiling point of this mixture higher or lower than 90 oC at an atmospheric
the following reaction is carried out in a closed vessel.2 nog cl2g ---gt 2 noclgif the partial pressure of no is
A 466-g of water is heated from 8.50°C to 74.60°C. Calculate the amount of heat absorbed (in kilojoules) by the water. The specific heat of liquid water is 4.184 J/(g °C).
The concentration of Ag+ in a solution saturated with Ag2C2O4(s) is 2.2 multiplied by 10-4 M. Calculate Ksp for Ag2C2O4.
In water, every sulfuric acid molecule transfers H+ to water and becomes an HSO4 - ion. Some HSO4 - ions give off another H+ to form SO4 -2 ions. Which statement is true?
The isothermal reversible expansion at room temperature of one mole of an ideal gas from 2L to 3L. (Answer: 3.4 J/K) b. One mole of ice at 265K is melted under usual lab conditions to form water at 329K.
A weak acid (HA) is found to ionize 17.8% when mixed at a concentration of 0.3 mol/L. What is the value of Ka for this acid?
Calculate the amount of solute in g needed to prepare 453.1 mL of a 5.22 %(m/v) LiNO3 solution.
A mixture of liquid hydrogen and water (99.99 mole %) is in equilibrium with hydrogen gas and water vapor at 25°C. Assuming ideal solution behavior, calculate the system pressure and the molar composition of the gas phase.
In the conversion of glucose to pyruvate, how many of the actual steps involve electron transfer
Neopentyl alcohol, (CH3)3CCH20H,cannot be dehydrated to an alkene without rearrangement. What is the chief product of dehydration?
1. using a sample of a compound of c and o2 having 3.00g of c and 8.00 grams of oxygen calculate the mass percent of
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