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zmey [24]
2 years ago
14

the decomposition of calcium carbonate to calcium oxide and carbon dioxide only takes place at very high temperatures, making th

e direct measurement of h for this reaction difficult. both calcium carbonate and calcium oxide react readily with dilute hydrochloric acid at room temperature
Chemistry
1 answer:
USPshnik [31]2 years ago
4 0
So calculate the H for the other two reactions a room temperature and combine the reactions to calculate the H of the decomposition of calcium carbonate using the Hess's Law
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I would say that the answer is d?
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3 years ago
1.Which element would most likely lose electrons to form positive ions when bonding with other elements?
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1) The element that will most likely lose electrons to form positive ions when bonding with other elements is rubidium (Rb).

2) The correct statement about sodium atoms is; "The sodium atom transfers electrons to the chlorine atoms to form ionic bonds."

3) Based on their location in the periodic table, nitrogen (N) and oxygen (O) are most likely to form covalent bonds with each other

4) Electronegativity is best described by the phrase; "the relative strength with which an element attracts electrons in a chemical bond"

Metals of group 1 and 2 are highly electropositive and are more likely to loose electrons in a bonding situation. Therefore, the element that will most likely lose electrons to form positive ions when bonding with other elements is rubidium (Rb).

Sodium chloride is an ionic compound. It is formed by transfer of electrons from sodium to chlorine. Sodium is highly electropositive while chlorine is highly electronegative. Therefore, sodium chloride is formed when sodium atom transfers electrons to the chlorine atoms to form ionic bonds.

Covalent bonds are formed between two nonmetals. Nitrogen and oxygen are non metals hence they form covalent bonds.

According to Linus Pauling, electronegativity refers to the ability of an element in a compound to draw electrons towards itself.

Learn more: brainly.com/question/14077687

8 0
2 years ago
Old thermometers contained very small amounts of mercury. The mercury in the photo has a melting point of -38.8 degrees Celsius.
Nikolay [14]

Answer:

••It's melting point equals -38.8 degrees Celsius because it is mercury. |••

Explanation:

This one makes the most sense out of the answers.

7 0
3 years ago
Plants are responsibe for a very important energy transformation what answer
Soloha48 [4]

Plants are chlorophyll-containing photosynthetic organisms. Thus, they convert solar or radiant energy into chemical energy under the process termed as photosynthesis.

<u>Explanation:</u>

  • Plants are chlorophyll-containing photosynthetic living beings. Consequently, they convert radiant energy into chemical energy under the procedure named  photosynthesis.  
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5 0
2 years ago
Describe the kinetic energy/ movement of the particles in plasma.
exis [7]
kinetic energy is a moving object potential energy is stored energy
8 0
3 years ago
Read 2 more answers
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