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Andrej [43]
3 years ago
12

Given the formula for a compound:

Chemistry
1 answer:
Elina [12.6K]3 years ago
8 0

Answer:

3.

Explanation:

4 carbon equals butane

O=C-NH2 equals amide

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unknown substance's mass: 75.0g, unknown substances molar mass = 150.0 g/mol, Hfus = 5.0x10^3 J/mol, Hvap = 1.00 x 10^4 J/mol, u
Leni [432]
These are the answers hope this helps

4 0
3 years ago
Read 2 more answers
What is ionisation enthalpy?<br>_<br>brúh +_-​
inysia [295]

Answer:

The amount of energy required to remove an electron from an isolated gaseous atom in its gaseous state.

Explanation:

LOL, Same here bhai, am fed up now

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5 0
2 years ago
When a reaction occurs between atoms with ground state electron configuration 1s2 2s1 and 1s2 2s2 2p5 the predominant type of bo
fenix001 [56]

Answer: The bond formed between the elements will be ionic bond.

Explanation: We are given two elements having electronic configurations:

Element 1: 1s^22s^1

Element 2: 1s^22s^22p^5

Element 1 can easily loose 1 electron to attain stable electronic configuration and Element 2 can accept 1 electron to attain stable electronic configuration.

For these elements, there will be a complete transfer of electron from Element 1 to Element 2. Hence, this will form a ionic bond.

From the configuration, Element 1 is Lithium and Element 2 is Fluoride. So, the compound is LiF.

5 0
3 years ago
SOICHIOMETRY HOW MANY MOL OF NITROGEN DIOXIDE ARE REQUIRED TO PRODUCE 2.75 MOL NITRIC ACID? 3NO2+ H20→ 2HNO3+ NO
pishuonlain [190]

Answer: C

Explanation: Hope this help :D

4 0
3 years ago
What is indicated by 'A' in the figure below? A. -VE B. +Ea C. -Ea D. +VE
makkiz [27]

Answer:

+VE

Explanation:

If we look at the reaction profile pictured in the question, we can easily identify A as the enthalpy of the reaction. The enthalpy of reaction (ΔHrxn) is usually defined as the difference between the total enthalpy (heat content) of the products of a reaction and the total enthalpy (heat content) of the reactants in that reaction.

Looking at the figure, we can see that the enthalpy of products is greater than the enthalpy of reactants, hence ∆Hrxn is positive as stated in the answer above.

6 0
3 years ago
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