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Chemistry, 22.06.2019 18:30
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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Which organism develops breathing organism develops breathing organs from pharyngeal arches? shark, spider, sea star, sea horse
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Chemistry, 23.06.2019 06:00
Which of the following is a solution a- brewed coffee b-tomato juice c- ranch salad dressing d- muddy water
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17.The column that an element is located in tells us
a. the total number of valence electrons an at...
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