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Elenna [48]
3 years ago
5

Jack hypothesize that more mold will grow on a slice of bread that is left in the dark that a slice of bread left in the light h

e wants to do in experiment to test this hypothesis Jack has four slices of bread for this experiment was condition should not be the same for the four slices of bread in order to test a hypothesis a The type of bread b used to be where the bread is placed c how long the bread is being observed The amount of jelly on them
Chemistry
1 answer:
cestrela7 [59]3 years ago
7 0
A- The type of bread. some breads can become moldy faster than others.
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Talja [164]

Answer:

This means the the sign of q for the reaction was _NEGATIVE _____ and the reaction was _EXOTHERMIC_____.

Explanation:

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Whereas, when heat is absorbed from the solution, the q-value for the solution will have a negative value. This means that the reaction will absorb heat from the solution and so the reaction is endothermic, and q value for the reaction is positive.

So, from the question, since the q-value of water is positive, it means that heat is absorbed by the solution and the reaction will produce a negative value of q and it's an exothermic reaction because the reaction produces heat for the solution.

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murzikaleks [220]

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Explanation:

It can be expressed in several ways: molarity (moles of solute per liter of solution); mole fraction, the ratio of the number of moles of solute to the total number of moles of substances present; mass percentage, the ratio of the mass of the solute to the mass of the solution times 100; parts per thousand (ppt), grams ...

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Ostrovityanka [42]

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