A student performed an experiment to determine the ratio of H¿O to CUSU, in a SAmple sam hydrated copper (II) sulfate by heating it to drive off the water and weighing the solid before and after heating. The formula obtained experimentally was CuSO:4.5 H20 but the true formula is CUSO4.5 H;O.Which error best accounts for the difference in results? L The student weighed out too much sample initially. II. The hydrated sample was not heated long enough to drive off all the water. III. During heating some of the hydrated copper (II) sulfate was lost IV. The student used a balance that gave weights that were consistently too high by 0.10g.

A student performed an experiment to determine the ratio of H¿O to CUSU, in a SAmple sam hydrated copper (II) sulfate by heating it to drive off the water and weighing the solid before and after heating. The formula obtained experimentally was CuSO:4.5 H20 but the true formula is CUSO4.5 H;O.Which error best accounts for the difference in results? L The student weighed out too much sample initially. II. The hydrated sample was not heated long enough to drive off all the water. III. During heating some of the hydrated copper (II) sulfate was lost IV. The student used a balance that gave weights that were consistently too high by 0.10g.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Concept explainers

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.

Question

A student performed an experiment to determine the ratio of H2O to CuSO, in a sample of
hydrated copper (II) sulfate by heating it to drive off the water and weighing the solid
before and after heating. The formula obtained experimentally was CuSO:4.5 H20 but
the true formula is CUSO4.5 H;O.Which error best accounts for the difference in results?
L The student weighed out too much sample initially
II. The hydrated sample was not heated long enough to drive off all the water.
III. During heating some of the hydrated copper (II) sulfate was lost.
IV. The student used a balance that gave weights that were consistently too high by 0.10g.

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