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Vladimir [108]
3 years ago
7

Which of the following cannot have hydrogen bonds? Select one: A. NH3 B. H2O C. HF D. CH3NH2 E. Which of the following cannot ha

ve hydrogen bonds? Select one: A. NH3 B. H2O C. HF D. CH3NH2 E. HCl
Chemistry
1 answer:
noname [10]3 years ago
3 0

Answer:

E. HCl

Explanation:

Cl atom does not have enough electronegativity to make enough positive charge on H.

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HOMER - <span>hypothesize, operationalize, measure, evaluate, and replicate/revise/report."</span>
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Kryger [21]

Answer:  B

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3 years ago
The following Lewis diagram represents the valence electron configuration of a main-group element. This element is in group 2A A
Paraphin [41]

<u>Answer:</u> The symbol of the ion formed is Ca^{2+}

<u>Explanation:</u>

An ion is formed when a neutral atom looses or gains electrons.

  • When an atom looses electrons, it results in the formation of positive ion known as cation.
  • When an atom gains electrons, it results in the formation of negative ion known as anion.

Electronic configuration is defined as the representation of electrons around the nucleus of an atom.

Number of electrons in an atom is determined by the atomic number of that atom.

The element present in Group 2-A and in period 4 is Calcium (Ca)

Electronic configuration of Ca atom:  1s^22s^22p^63s^23p^64s^2

This atom will loose 2 electrons to attain stable electronic configuration similar to Argon element (noble gas)

The electronic configration of Ca^{2+}\text{ ion}=1s^22s^22p^63s^23p^6

Hence, the symbol of the ion formed is Ca^{2+}

4 0
4 years ago
25g of gold with initially 27grade centigrade what is the final temperature uppon absorbing 2.3kj of heat
dezoksy [38]

The final temperature of the mass of gold is  737 °C.

<h3>What is the specific heat capacity of gold?</h3>

The specific heat capacity of gold is 0.126 J/g/K

The final temperature, T2 of the gold is calculated as follows:

T2 = T + Q/mc

where;

T is initial temperature, m is mass, and c is specific heat capacity of gold.

T2 = 27 + 2.3 x 1000/(25 x 0.126)

T2 = 737 °C

Therefore, the mass and heat capacity of gold determines its final temperature.

Learn more about specific heat capacity at: brainly.com/question/27862577

#SPJ1

7 0
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BigorU [14]

Answer: exothermic

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