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Chemistry, 22.06.2019 07:30
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Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.
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When the chemicals iron sulfide (fes) and hydrochloric acid (hcl) are combined, bubbles appear from the mixture. 1. does the appearance of bubbles indicate a physical or chemical change? 2. why do the bubbles indicate this change? 3. what property is this?
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Chemistry, 22.06.2019 21:00
Which property of water causes water drops to bead on a freshly waxed car?
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If an atom has 11 protons and 13 neutrons what is it’s atomic number...
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