If I do a reaction where copper (II) sulfate
2. If I do a reaction where copper (II) sulfate (blue) and aluminum metal are involved, then after the reaction there is a tinge of blue solution. The blue solution indicates
a) excess CuSO4,
b) limited amounts of Al2(SO4)3
c)excess Al2(SO4)3,
d) limited amounts of CuSO4
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3. T or F Chemical changes are closely related to chemical properties
4. T or F Calorimetry is the study of the process of measuring the amount of heat released or absorbed during a chemical reaction.
5. The numbers required to balance the following equation are:
___ Mg + ___ Mn2O3 → ___ MgO + ___ MnO
6. in the Ideal Gas Law Constant laboratory, hydrogen peroxide (H2O2) is decomposed to oxygen gas (O2.)Â What is the ratio of oxygen to hydrogen peroxide?
7. An example of human error is:
a.pouring less than a key solution
b.calculator needs a battery
c.computer syntax error on instrument
d.scale not calibrated
8. An object weighs 20.9 grams. A graduated cylinder with water has a volume of 25.2 mL. The object is placed in the graduated cylinder of water and has a new volume of 9. mL. The density of the object is:
10. Accuracy is defined as:
a.the extent to which a given set of measurements of the same sample agree with their mean.
b.the extent to which a given measurement agrees with the standard value for that measurement.
c.neither is correct
d.both are correct
11. T or F Electronegativity measures the ability of atoms to acquire an electron.
Answers
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Posted 19 Jun 2017 03:06 AM
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