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Juli2301 [7.4K]
3 years ago
12

Which is the electron configuration for lithium? o 15² o 253 1822s1 O 151252

Chemistry
1 answer:
kompoz [17]3 years ago
5 0

Answer:

Explanation:

the atomic number of lithium is 3 thats why the electronic configuration of lithium is 1s2,2s1

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3 years ago
How is the enthalpy of reaction shown in this potential energy diagram?
Snowcat [4.5K]

Answer : The correct option is C.

Explanation :

Enthalpy of reaction : It is defined as the changes in heat energy takes place when reactants go to products. It is denotes as \Delta H.

\Delta H = Energy of product - Energy of reactant

\Delta H is positive when heat is absorbed and the reaction is endothermic.

\Delta H is negative when heat is released and the reaction is exothermic.

In the given potential energy diagram, the energy of product at higher level and energy of reactant at lower level. The \Delta H for this reaction will be positive.

So, the enthalpy of reaction is defined as the difference of the energy of the reactants and the energy of the products.

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4 years ago
How does a Camel prevent the loss of water from their body?​
Schach [20]

Camels lose less water through their urine and feces than many other mammals. Their kidneys concentrate water heavily, leading to salty urine. The intestines also reabsorb water from intestinal material as it is digested, so dry feces are produced.

7 0
3 years ago
What is the difference between a theory and an observation
UNO [17]
A theory is like a hypothesis like an idea. Observation is to gain information like taking notes about what you see.
4 0
4 years ago
Identify which two compounds below are constitutional isomers
Romashka [77]

Answer:

(CH₃)₃COCH3₃ and (CH₃)₂CHOCH₂CH₃

Explanation:

Isomers are compounds which have the same molecular formula. Constitutional isomers have different connectivity; the atoms are connected in different ways.

1. (CH₃)₃COCH₃

2. (CH₃)₂CHOCH3₃

3. (CH₃)₂CHOCH₂CH₃

Molecules 1 and 3 have the same formula (C₅H₁₂O) and are isomers. Molecule 2 is not an isomer. From the structural formula, it is clear that Molecules 1 and 3 have different connectivity.

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3 years ago
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