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Problem- When a sample of H2S gas produced according to the equation was collected over water at 25 oC the pressure of gas above the water was 0.997 atm and its volume was 6380 mL. Calculate the mass (g) of Fe2S3 that reacted. Be sure to consider the vapor pressure of the water.
Fe2S3(s) + 6HCl(aq) ---> 3H2S(g) + 2FeCl3(aq)
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A 70.0 g steam sample at 150.0 degree Celsius was converted to ice at -150.0 degree Celsius, calculate the total amount of heat removed in the process.
Draw a tetra-peptide that FPHD at pH 2.0. Clearly indicate with a circle what groups would be charged if the pH was changed to 12.0. Draw a box around the peptide bonds
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you are asked to titrate a 6.00 ml sample of vinegar using 0.25m naoh. the mass of your vinegar sample was 6.168g so
Write the ionic equation for the reactions. Write the net ionic equations for the reactions, A.) LA2(CO3)3 (s)+HCL (aq)= LaCl3 (aq) + CO2 (g) + H20
An unknown element has two naturally occurring isotopes. Isotope 1 has a mass of 120.0 amu and an abundance of 40%. Isotope 2 has a mass of 122.0 amu. What is the atomic mass of the element
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Compare the rms speeds. Compare the average kinetic energy. -Consider equimolar samples of the same ideal gas at the same temperature, but different volumes. Sample A has a larger volume than Sample B
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