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3 years ago

Why do some chemical reactions occur?

Chemistry

1 answer:

zheka24 [161]3 years ago

7 0

Answer:

Explanation:

Reactions occur when two or more molecules interact and the molecules change. Bonds between atoms are broken and created to form new molecules

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3. Which of the following are isometries (rigid motions)? (Choose all that apply) (2 points)

vichka [17]

Answer:

The answer is D.

Explanation:

<h2><u><em>PLEASE MARK AS BRAINLIEST!!!!!</em></u></h2>

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3 years ago

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A student constructs a galvanic cell that has a strip of iron metal immersed in a solution of 0.1M Fe(NO3)2 as one half-cell and

MrMuchimi

Answer:

Explanation:

The cell potential is:

ΔE°cell = E°red(red) - E°red(oxid)

Where, E°red(red) is the reduction potential of the substance that is reducing, and E°red(oxid) is the reduction potential of the substance that is oxidizing. For the reaction be spontaneous and happen, ΔE°cell > 0.

The reduction takes place in the cathode, which is the negative pole, and the oxidation in the anode, which is the positive pole. So, the electrons flow from the positive pole to the negative pole (anode to cathode).

Then, if the voltmeter measured a negative potential, it means that is was attached incorrectly. So, the anode is Fe.

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3 years ago

What precipitate is formed when solutions of aluminum nitrate and calcium<br> chromate are mixed?

Scrat [10]

Answer:

Aluminum chromate, a yellow precipitate.

Explanation:

${ \bf{2Al(NO _{3} ) _{3(aq)}+ 3CaCr _{} O _{4(aq)} → { \orange{Al _{2} (CrO _{4} ) _{3(s)}} +3 Ca(NO _{3}) _{2(aq)} }}}$

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3 years ago

What is carbon dioxide water and light energy converted into the process of photosynthesis

lesantik [10]

Answer:

Glucose(Sugars) or C6H12O6

Explanation:

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3 years ago

Which element in period 3 has both metallic and non metalik properties

Andrei [34K]

Answer:

Si is the answer I hope this help

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2 years ago