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WorksheetsWarm-Up #32
Total questions: 6
Worksheet time: 11mins
Which list has the elements selenium, calcium, and zinc arranged in order of decreasing electronegativity?
calcium, zinc, selenium
selenium, zinc, calcium
zinc, selenium, calcium
calcium, selenium, zinc
Shyan determined the length of a wooden dowel to be 28.3 cm. The actual length of the dowel is 27.9 cm. What is the percent error in Shyan's measurement?
-1.43%
0.98%
1.01%
1.43%
If a container with 13.7 L of O2 exerts 178 torr pressure at 41°C, what would the pressure of the O2 gas be if the volume was increased to 68.5 L and the temperature was increased 207.5°C?
180.2 torr
54.5 torr
760 torr
101.3 torr
An atom with an atomic number of 48 and a mass number of 120 contains:
48 p+, 48 e-, and 72 n
72 p+, 48 e-, and 48 n
120 p+, 48 e-, and 72 n
72 p+, 72 e-, and 48 n
What is the molarity of a solution that has 0.873 mol CaCl2 dissolved in 550 mL of water?
1.59 x 10-3 M
1.59 M
0.630 M
0.480 M
What number of moles of oxygen, O2, is equivalent to 3.79 x 1021 molecules of oxygen?
1.59 x 102 moles O2
6.29 x 10-3 moles O2
2.28 x 1045 moles O2
6.29 x 1043 moles O2
