Chemistry, 01.10.2019 18:10 nikitakhrabkov123
Read the following hypothesis about why a chicken bone becomes bendy after being soaked in vinegar: the bone can bend because the acid in the vinegar has removed the calcium that made it hard. what evidence would support this hypothesis? a. observing that a bone placed in a freezer becomes more rigid b. observing that a bone placed in a beaker of acid becomes bendy c. observing that a bone placed in a beaker of water becomes bendy d. observing that a bone placed in a mixture of baking soda and water becomes more rigid
Answers: 2
Chemistry, 21.06.2019 15:30
Which substance absorbs 58.16 kj of energy when 3.11 mol vaporizes? a)ch4 b)h2s c)co2 d)nacl
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Chemistry, 22.06.2019 16:00
Which of the following is the correct definition of chemical energy? a. energy an object has because of its motion or position b. energy resulting from the flow of charged particles, such as electrons or ions c. energy produced from the splitting of atoms d. energy stored in chemical bonds of molecules
Answers: 1
Chemistry, 22.06.2019 17:30
Observation and experimentation have led many scientists to accept a theory about the origin of the universe. this theory is called the big bang theory. scientific evidence collected and observed by scientists around the world suggests that the universe is ever expanding from a hot and dense initial state. what makes this a scientific theory? (2 points)
Answers: 2
Chemistry, 23.06.2019 04:31
Chemical engineering who specializes in negotiating for large purchases and instructing customers in use of the products are
Answers: 1
Read the following hypothesis about why a chicken bone becomes bendy after being soaked in vinegar:...
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