Chemistry, 22.08.2020 19:01 squawk1738
1. Describe the appearance of the material. Include its color and state (solid or liquid). 2. Pour ¼ cup of water into a small, clear container. Measure ¼ teaspoon of the material, and carefully pour it into the container. Look at the side of the container as you pour in the material. Decide whether the material is less dense or more dense than water by observing whether the material floats or sinks. 3. Swirl the container to see whether the material mixes with the water. 4. Rinse and dry the container and the measuring spoon after each use.
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Chemistry, 22.06.2019 06:00
Compare and contrast physical changes with chemical changes.
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Chemistry, 22.06.2019 06:00
An alkaline battery produces electrical energy according to the following equation. zn(s) + 2 mno2(s) + h2o(l) zn(oh)2(s) + mn2o3(s) (a) determine the limiting reactant if 17.5 g zn and 31.0 g mno2 are used. (type your answer using the format ch4 for ch4.) (b) determine the mass of zn(oh)2 produced. _ g
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Chemistry, 22.06.2019 13:00
The number of neutrons is equal to the atomic number minus the atomic mass. a. true b. false
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1. Describe the appearance of the material. Include its color and state (solid or liquid). 2. Pour ¼...
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