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riadik2000 [5.3K]
3 years ago
8

During the experiment, scientists noted that several of the reaction beakers became hot to the touch. All of the following react

ions could cause this result except:____________.
Chemistry
1 answer:
Basile [38]3 years ago
4 0

During the experiment, scientists noted that several of the reaction beakers became hot to the touch. All of the following reactions could cause this result except endothermic and positive ∆H experiments.

<u>Explanation:</u>

If the beakers are becoming hot during experimentation, then that means the energy is being released from the reactants during this experiment. As the energy is being released that enthalpy change will also be negative as the enthalpy change is calculated as the difference of enthalpy of reactants from products.

So in these cases, heat is released making the beakers hot. So for the exceptional case, the experiment should be endothermic in nature and positive enthalpy change should be there in the experiment. Such that the heat will not be released leading to no heating of beakers.

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Using the diagram of the forces on an airplane, which arrow represents the force of gravity?
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Answer:

Is there a diagram that you can post

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3 years ago
sucrose is composed of carbon hydrogen and oxygen which of the following is not needed in order to determine the precent by mass
Dimas [21]

Explanation:

It is often desirable to determine the mass percent of elements in a given compound.

To determine the mass percent of elements:

  • Evaluate the formula mass of the compound. This is done by summing the atomic masses of the atoms in the compound together.
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3 0
3 years ago
What would be the best indicator for titrating the weak base sodium bicarbonate using hcl titrant?
BabaBlast [244]

The methyl orange  would be the best indicator for titrating the weak base sodium bicarbonate using HCl titrant

When weak base is titrated with strong acid then , then solution is slightly acidic at end point . If weak acid is titrated with strong base then , the solution is slightly basic because salt formed will hydrolyzed to a certain extent .

In acid base titration at the end point the amount of the acid becomes chemically equivalent to the amount of the base present .The methyl orange  would be the best indicator for titrating the weak base with strong acid .

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6 0
1 year ago
The population of worms in a garden ecosystem is decreasing. The population of birds will most likely _____.
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The population of birds would Decrease

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It also depends on what bird it is but with any species if there main source of food decrease then they decrease or move out of the area.

Hope this helps

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3 years ago
What is science? Write a definition for the word
Tanya [424]

Answer:

make me brainliest pls :)

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Science is both a body of knowledge and a process. In school, science may sometimes seem like a collection of isolated and static facts listed in a textbook, but that's only a small part of the story. Just as importantly, science is also a process of discovery that allows us to link isolated facts into coherent and comprehensive understandings of the natural world.

Science is exciting. Science is a way of discovering what's in the universe and how those things work today, how they worked in the past, and how they are likely to work in the future. Scientists are motivated by the thrill of seeing or figuring out something that no one has before.

Science is useful. The knowledge generated by science is powerful and reliable. It can be used to develop new technologies, treat diseases, and deal with many other sorts of problems.

Science is ongoing. Science is continually refining and expanding our knowledge of the universe, and as it does, it leads to new questions for future investigation. Science will never be "finished."

Science is a global human endeavor. People all over the world participate in the process of science. And you can too!

5 0
2 years ago
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