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Questions in chemistry
📝 Answered - A sample of chlorine gas is placed in a container at constant pressure. The sample is heated until the absolute temperature is doubled. This will also double which of the following? A. Potential energy B. Moles C. Density D. Number of molecules E. Volume
📝 Answered - How many significant figures are in 7.0?
📝 Answered - What Earth sphere extends from Earth's core to Earth's surface?
📝 Answered - What is a non-example of a substance? (Consider science, water)
📝 Answered - If you blow dry your wet hair, is it a physical or a chemical change?
📝 Answered - How many neutrons are probably in the nucleus of an element with an atomic weight of 197? a. 43 b. 79 c. 83 d. 100 e. 118
📝 Answered - Ten pints of 15% salt solution are mixed with 15 pints of 10% salt solution. What is the concentration of the resulting solution?
📝 Answered - Why does salt separated from a saltwater solution look different than the salt that dissolved in the water?
📝 Answered - Calculate the number of moles for the following substances: 1. 2.25 g of Na\(_2\)CO\(_3\) 2. 0.800 g of NaOH 3. 17.75 g of Na\(_2\)SO\(_4\)
📝 Answered - How many magnesium ions are present in [tex]5.36 \times 10^{-4}[/tex] mol of magnesium iodide?
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