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2 years ago

5

Which element has atoms with the strongest attraction for electrons in a chemical bond?1)aluminium, 2)carbon, 3)chlorine, 4)lith

ium

1 answer:

denis-greek [22]2 years ago

4 0

I think the answer is Chlorine.

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If the symbol X represents a central atom, Y represents outer atoms, and Z represents lone pairs on the central atom, the struct

sashaice [31]

Answer:

(C) bent 109

(2) $XY_5Z$

Explanation:

The number of bond pairs = 2

Number of lone pairs = 2

The general formula is - $XY_2Z_2$

According to VSEPR theory, the atoms will form a geometry in such a way that there is minimum repulsion and maximum stability.

The central atom has 2 bond pairs and 2 lone pairs. Hybridization is sp³. The geometry is bent shape which has an angle of approximately 105.5°. It original has angle of 109.5° but due to lone pair repulsion, it reduces.

Answer - (C) bent 109

Square pyramidal possibility:- (2) $XY_5Z$

The central atom has 5 bond pairs and 1 lone pair. Hybridization is sp³d. The geometry is square pyramidal in which the equatorial bonds has an angle of 120° and axial bond has an angle of 90°.

5 0

2 years ago

4p + 5O2 -> P4O10 ; the percent yield of PO4O10 when 6.20 g of phosphorus burns into excess oxygen is 67.0%. What is the yiel

denis23 [38]

Answer: 36.9 g

Explanation:

P4 + 5O2 = P4O10 Balanced equation

moles P4 present = 23.9 g x 1 mole/123.88 g = 0.193 moles

moles O2 present = 20.8 g x 1 mol/32 g = 0.65 moles O2

From balanced equation, mole ratio O2 : P4 is 5:1. Is 0.65 moles O2 5x 0.193 moles? NO. You don't have enough O2.

O2 is limiting in this reaction.

theoretical moles of P4O10 = 0.65 moles O2 x 1 mole P4O10/5 moles O2 = 0.13 moles P4O10

mass of P4O10 produced = 0.13 moles x 283.9 g = 36.9 g

3 0

1 year ago

6. A rectangular block of wood has length 6.0 cm, width 5.0 cm and height 10.0 cm. It has mass l50g. What is the mass of a block

vovikov84 [41]

The mass would also be 150g like the first block of wood. Both of their volumes are 300 cm^2, and since they are the same type of wood they have the same density. Therefore following d=m/v, they have the same mass

4 0

2 years ago

A cylinder at left with balls evenly spaced throughout the cylinder has an arrow leading to a cylinder at right cylinder with ba

Lelechka [254]

gas to liquid

Explanation:

The change of state indicated by this analogy is from gas to liquid.

Cylinder to the left is filled with gases

Cylinder to the right is made up of liquid.

Gases occupy the volumes of containers they are introduced into.
They are random and possess a high kinetic energy.
Liquids have definite volume and flow with one another.
The gases in A are dispersed and in random motion.
This phase change is called condensation

learn more:

Phase change brainly.com/question/1875234

#learnwithBrainly

7 0

2 years ago

Read 2 more answers

The graph above shows the distribution of molecular speeds for four different gases at the same temperature. What property of th

Eduardwww [97]

Answer:

The correct option is;

D.) The molecular masses of the gases, because the gas molecules have the same average kinetic energy and mass can be calculated using the equation, $KE_{avg} = \dfrac{1}{2} \times m \times v^2$

Explanation:

The graph shows the proportion of the atoms of each gas have a given velocity

The given parameters of the graphs are;

The dependent variable of the graph = The number of molecules

The independent variable = The molecular speed (m/s)

The temperature of the gases = The same temperature

$v_{rms} = \sqrt{\dfrac{3 \cdot R \cdot T}{MW} }$

Therefore, from the above equation, at constant temperature, the root mean square velocity varies inversely as the molecular weight

Similarly from the kinetic energy equation, we have;

$KE_{avg} = \dfrac{1}{2} \times m \times v^2$

Whereby, the energy contained in each of the four gas are the same, we have;

For increasing molecular mass by a factor of 2, the velocity decreases by a factor of 4.

8 0

2 years ago

Read 2 more answers