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3 years ago

Identify the molecules with a dipole moment: (a) SF (b) CF (c) CCCB (d) CHCI (e) H.CO

Chemistry

1 answer:

trapecia [35]3 years ago

6 0

Answer: An atom has either tendency of accepting or losing electron, on the basis of this virtue it is named as

Electronegative: An atom has tendency to attract the shared pair of electron towards itself is called electronegative.

Electropositive: An atom that has tendency to give the shared pair of electron towards an electronegative atom is called electropositive.

For the existence of dipole within a molecule there must be a difference in electronegativity of the atoms participating in it. All the molecules here have dipole moment because the atoms participating in them have a difference in electronegative.

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Getting empirical formula, but they also gave molar mass too.

-Dominant- [34]

Answer:

Empirical formula is PNCl₂

Explanation:

Percent composition means that 100 g of compound has x g of each element.

In 100 g of compound x, we have 26.73 g of P, 12.09 g of N, 61.18 g of Cl.

So, let's make some rules of three:

In 100 g of compound we have 26.73 g of P, 12.09 g of N, 61.18 g of Cl

In 579.43 g of compound we have:

(579.43 . 26.73) / 100 = 155 g of P

(579.43 . 12.09) / 100 = 70 g of N

(579.43 . 61.18) / 100 = 354 g of Cl

Let's convert the mass of the elements in moles.

155 g of P / 30.97 g/mol = 5 P

70 g / 14 g/mol = 5 N

354 g / 35.45 g/mol = 10 Cl

7 0

4 years ago

Read 2 more answers

What mass of CO2 can be produced from the decomposition of 4.8 moles of Fe2(CO3)3?

gavmur [86]

Answer: 633.6 g of $CO_2$ can be produced from the decomposition of 4.8 moles of $Fe_2(CO_3)_3$

Explanation:

The balanced chemical equation for decomposition of $Fe_2(CO_3)_2$ is :

$Fe_2(CO_3)_2\rightarrow Fe_2O_3+3CO_2$

According to stoichiometry :

1 mole of $Fe_2(CO_3)_2$ produce = 3 moles of $CO_2$

Thus 4.8 moles of $Fe_2(CO_3)_2$ will rproduce= $\frac{3}{1}\times 4.8=14.4moles$ of $CO_2$

Mass of $CO_2=moles\times {\text {Molar mass}}=14.4moles\times 44g/mol=633.6g$

Thus 633.6 g of $CO_2$ can be produced from the decomposition of 4.8 moles of $Fe_2(CO_3)_3$

7 0

3 years ago

Describing Diffusion

yaroslaw [1]

Answer:

its the 3rd option.

the molecules move from region of higher concentration to a region of lower concentration.

Explanation:

please do give me brainliest if this helped you.

thank you and have a great day :D

3 0

3 years ago

A 13.9 - g piece of metal ( specific heat capacity is 0.449 /g^ C)who whose temperature is 54.2 degrees * C was added to a sampl

lubasha [3.4K]

Answer:

26.2g = Mass of water in the calorimeter

Explanation:

The heat absorbed for the water is equal to the heat released for the metal. Based on the equation:

Q = m*C*ΔT

<em>Where Q is heat, m is the mass of the sample, C is specific heat of the material and ΔT is change in temperature</em>

<em />

Replacing we can write:

$m_{metal}*C_{metal}*dT_{metal}=m_{water}*C_{water}*dT_{water}$

13.9g * 0.449J/g°C * (54.2°C-15.6°C) = m(H₂O) * 4.184J/g°C * (15.6°C-13.4°C)

240.9J = m(H₂O) * 9.2J/g

<h3>26.2g = Mass of water in the calorimeter</h3>

4 0

3 years ago

When KCl dissolves in water:

34kurt

This dissociation occur because:

O had to bond with H due to the Hydrogen bonding rule, which will form OH~ (Hydroxide).

K is more attracted to Hydroxide than Cl, so it will depart Cl and bond with OH~.

that leaves a H and a Cl, which one has a positive charge and the other has a negative, so they will bond and form Hydrochloric Acid.

3 0

3 years ago