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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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Chemistry, 22.06.2019 20:20
Which symbol can be used to indicate the pressure at which a chemical reaction is carried out? 25°c 2 atm pa
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Chemistry, 23.06.2019 02:30
Apound is approximately 0.45 kilogram. a persons weighs 87 kilograms. what is the persons’s weight, in pounds, when expressed to the correct number of significant figures
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Chemistry, 23.06.2019 08:00
What is the temperature in kelvin of a gas if it is allowed to expand from 1.50 l to 4.50 l? the initial temperature is 10.0°c and pressure is constant throughout the change. which equation should you use? t2= v2/v1 t1 what is the final temperature? ⇒ 849 k these are the answers.
Answers: 1
Humans have the ability to change the characteristics, or traits, of organisms over time. What is th...
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