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3 years ago

TUESDAY:

Chemistry

2 answers:

puteri [66]3 years ago

7 0

Answer:

Protons=positive

Electrons=negative

Neutrons=Neutral

Explanation:

I am pretty sure this is what you are asking for if not just tell me

Rzqust [24]3 years ago

5 0

Protons are positive
Neutrons are neutral
Electrons are negatively charged

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When the concentration of hydrogen lons equals the concentration of hydroxide ions, is called the ?

Ira Lisetskai [31]

Answer:

neutral pH or neutral solution

Explanation:

when hydrogen ion concentration and hydroxide ion concentration the pH is neutral i.e. ph=pOH=7

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3 years ago

I'll mark brainliest!! :)

Viefleur [7K]

I believe the answer is C, AgBr. I hope this helps

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3 years ago

What type of bond is this combination likely to form

kari74 [83]

Answer:

A combination is certainly possible, but you should not take formal charges so literally

Normally, when a covalent bond is found, the two atoms both bring in one electron. As you identify correctly, in the case of nitric acid that would not be possible completely. If you draw the different possible resonance structures, the most likely structure has a single bond between the nitrogen and an oxygen where the oxygen has 3 lone pairs and both electrons in the bond are donated by the nitrogen. This makes the nitrogen "positive" and that oxygen "negative", but in fact the electrons move more freely in the molecule and charges are more distributed. You will not be able to find "the negatively charged" oxygen atom.

Explanation:

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3 years ago

A macromolecule made up of mainly carbon and hydrogen atoms that is primarily used for energy storage and in cell membranes.

Alex787 [66]

I believe the answer is glucose

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3 years ago

Read 2 more answers

In the early twentieth century, what was Alexander Fleming’s hypothesis concerning the relationship between a yellow-green mold

SpyIntel [72]

Answer:

The correct answer is the option c)He thought the mold had released a chemical that prevented the bacteria’s growth.

Explanation:

In the 1920s, Alexander Fleming was working in his laboratory at St. Mary's Hospital in London when, almost by accident, he discovered a naturally growing substance that could attack certain bacteria. In one of his experiments, Fleming observed that colonies of a bacterium had been depleted or removed by a mold that grew on the same Petri dish. He observed that the bacteria furthest from the fungus had grown to produce large-sized colonies, while the colonies closest to the fungus were tiny. He determined that mold made a substance that could dissolve bacteria. The fungus was penicilium chrysogenum and thus Fleming called this substance penicillin, by the name of the mold that produces it. Thus, after several years of experiments in 1930, Howard Florey and Ernest Chain developed at Oxford University the procedures to produce pure penicillin from the fungus that Fleming isolated. Thus penicillin could be concentrated by Florey and Chain, and in 1945 they shared with Fleming the Nobel Prize in Medicine.

Then, the correct answer is the option c)He thought the mold had released a chemical that prevented the bacteria’s growth.

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2 years ago