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Questions (7)

The graph shows the solubility curve of an unknown substance.Which BEST describes the solution at point C? A. saturated B.
1. 1 answer
2. 260 views
What would happen if a scuba tank (a rigid, sealed gas cylinder) heats up?A. The pressure exerted by the gas in the tank would
1. 1 answer
2. 322 views
If a balloon is taken outside on a very cold day, what will occur?A. The volume of the balloon will decrease. B. Gas will flow
1. 2 answers
2. 325 views
Which of the following compounds results from the formation of an ionic bond?A. H2O B. NO2 C. NaCl D. CO2
1. 2 answers
2. 188 views
A sodium ion, Na+, has a positive charge because itA. gained an electron. B. lost a proton. C. gained a neutron. D. lost an
1. 2 answers
2. 174 views
How many valence electrons does an oxygen (O) atom have?
1. 3 answers
2. 121 views
How many protons are in the nucleus of a sodium atom?
1. 3 answers
2. 158 views