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Calculate the amount of heat liberated (in kJ) from 355 g of mercury when it cools from 76.0°C to 13.0°C.
how many grams of MgCl2 are contained in 225mL of a 0.650 M solution
if a molecule of a neon gas travels at an average of 400.m/s at a given temperature, estimates the average speed of a molucule of butane gas, C4H10, at the same temperature.
How many grams of KOH are required to neutralized 300ml of 5.0 N HN03 solution.
A chemist dissolves 0.099 g of CuSO4 · 5 H2O in water and dilutes the solution to the mark in a 500-mL volumetric flask. A 36.1-mL sample of this solution
How much heat is required to warm 225 grams of ice from negative 46.8 degrees celsius 0 degrees celsius melt the ice, warm the water from 0 degrees celsius to 100 degrees celsius.
Calculate OH- of each aqueous solution using the following H3o+ a. 1.0 X 10-7m in OH- b.1.0 x 10-5 in OH-
If 75 g of liquid water (C = 4.18 J/g-oC) in a calorimeter changes temperature from 25°C to 75°C, how much heat was transferred? Use the equation C = q/mT.
If 2.55 mol of ethane (C2H6) undergo combustion according to the unbalanced equation C2H6 + O2 -→ CO2 + H2O , how much oxygen is required? Answer in units of mol.
A gas occupying 28 mL at standard conditions is heated to 13?C while the pressure is reduced to 0.84119 atm. What is the new volume occupied by the gas.
Find out the exact significant figures for each of the values - Indicate the number of significant figures
2 FeBr3(aq) + 3 Na2CO3(aq) Fe2(CO3)3(s) + 6 NaBr(aq) what is the net ionic eqation for this molecular equation.
A solution of household bleach contains 5.25% sodium hypochlorite, NaOCl, by mass. Assuming that the density of bleach is the same as water,
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