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weeeeeb [17]
3 years ago
8

Which concept describes the formation of four equivalent, single, covalent bonds by carbon in its compounds that resembles metha

ne, ch4?
Chemistry
1 answer:
Montano1993 [528]3 years ago
4 0
Carbon is special and unique because it is able to form different compounds with a lot of elements, including itself. When it bonds with itself, this is possible because of the concept of hybridization. It is the mixing of atomic orbitals into a new hybrid orbital. In this case, methane is formed through the sp³ hybridization.
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230 cm3 of hot tea at 96 °C are poured into a very thin paper cup with 100 g of crushed ice at 0 °C. Calculate the final tempera
ivann1987 [24]

Answer:

Final temperature of the ice tea, x = 42.73°C

Explanation:

230 cm^3 = 230 g of liquid ( taking the density of tea as the same the density of water)

In cooling from 96°C to 0°

C (before freezing) the available energy is

96 × 230 = 22080 cal

The latent heat (the heat required to melt the crushed ice per gram) of fusion for water = 79.7 cal/g

Melting 100 g of crushed ice at 0°C will absorb

100 × 79.7 = 7970 cal

The retain heat of the iced Tea = (22080 - 7970) cal of heat raising the mixture temperature as follows

(22080 - 7970) = 14110 cal

The mass of the final solution 230 + 100 = 330 g solution

Final temperature = 14110 / 330 = 42.76°C

Or where specific heat of water = 4.186J/Kg°C

and the latent heat of the ice = 334J/Kg

We have

230 × (specific heat capacity of water) × (96 - x) =100× (specific heat capacity of water) ×(0-x) + (latent heat) ×100 =

230 × 4.186 × (96 - x) =100× 4.186 ×(x-0) + 100×334

1381.38×x = 59026.88

Final temperature of the ice tea, x = 42.73°C

5 0
3 years ago
Which of the following can be best explained by temporary dipole moments?
Tju [1.3M]

Answer:

B. This explains how two noble gases' molecules can have an attractive force between them.

C. This explains why long hydrocarbon chains have relatively high boiling points.

Explanation:

Temporary dipole moments are weak intermolecular force of attraction between two or more compounds. They are the weakest of intermolecular forces. They form when non-polar molecules becomes polar due to the constant motion of their electrons. This may lead to an uneven charge distribution at an instant.

When this occurs, the molecule has a  temporary dipole. The dipole can induce neighboring molecules to be distorted and form dipoles as well.

  • Two noble gases can exhibit this bonding attraction usually when at low temperature. The temporary dipole cause a temporary charge separation and can lead to attraction.
  • Long hydrocarbons of long chains also exhibits this bonding which can cause a rise in their boiling point.
  • Ammonia and nitrogen gas will exhibit hydrogen bonding, a strong dipole - dipole attraction.
  • Hydrogen fluoride and methanol has hydrogen bonds likewise dimethyl either and acetone.
6 0
3 years ago
What are the Respiration effects on the pH?
WITCHER [35]
Our blood have a pH around the 7.0, when we hold the breath our cells still breathing, and the release CO_2, this compound react with water (hydrolysis).

H_2O+CO_2\leftrightharpoons H_2CO_3

This compound formed by this reaction is acid, carbonic acid.

Them the pH will get lower them normal, and our buld send an action to our body, and this reaction will be the <span>breathing.</span>
3 0
3 years ago
Due tonight! I need help :,)
Elena-2011 [213]
OH2 is the answer :)
4 0
3 years ago
Which usually have no luster metals, nonmetals and metalloids
Levart [38]
More information please?
7 0
4 years ago
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