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How many grams of aluminum are there in 4.05 x 10²5 molecules of Al203?

How many grams of aluminum are there in 4.05 x 10²5 molecules of Al203?

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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4) How many grams of aluminum are there in 4.05 x 1025 molecules of Al2O;? 5) Determine the density of gold if 1.25 x 1023 atoms occupy 2.83 x 10-3 L. 6) Calculate the number of grams in 13.4 L of chlorine gas (Cl2) at STP.
Transcribed Image Text:4) How many grams of aluminum are there in 4.05 x 1025 molecules of Al2O;? 5) Determine the density of gold if 1.25 x 1023 atoms occupy 2.83 x 10-3 L. 6) Calculate the number of grams in 13.4 L of chlorine gas (Cl2) at STP.
Q4) (a) how many moles of H2SO4 are there in 250 mL of a 0.7mol/L sulfuric acid solution? (b) What mass of acid is in this solution? Q5) what mass of (NaOH) is needed to make up 250 mL of a 0.750 mol/L solution? Q6) what is the concentration of (NaCl) in g/L and g/mL in a 2.50 M solution? Q7) A solution of (CaSO4) contained 0.500 g dissolved in 3.00 L of water. Calculate the concentration in (a) g/L, (b) g/mL and (c) mol/L.
Transcribed Image Text:Q4) (a) how many moles of H2SO4 are there in 250 mL of a 0.7mol/L sulfuric acid solution? (b) What mass of acid is in this solution? Q5) what mass of (NaOH) is needed to make up 250 mL of a 0.750 mol/L solution? Q6) what is the concentration of (NaCl) in g/L and g/mL in a 2.50 M solution? Q7) A solution of (CaSO4) contained 0.500 g dissolved in 3.00 L of water. Calculate the concentration in (a) g/L, (b) g/mL and (c) mol/L.
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