Which will have a higher density: 1.00 g of pure gold or 1.00 kg of pure gold?

As a part of an experiment a student burns propane to produce carbon dioxide and water she remembers that she must follow the law conservation of matter when writing a balanced chemical equation which of these equation adheres to the law of conservation of matter

Which of the following pairs of elements belong to the same groupa. h and he b. li and bec. c and pb d. ga and ge

The chart shows the bid provided by four contractors to complete a job. which contractor is the most cost-effective?