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Archy [21]
3 years ago
13

Explain how lone pairs of electrons influence the shape of a molecule.

Chemistry
1 answer:
Ronch [10]3 years ago
3 0

Explanation:

the lone pairs will be negatively charged. these have a repulsion effect on other negatively charged electrons in the shells of atoms. picture a water molecule: the lone electron pair on the top of the oxygen will have a repulsion force on the 2 hydrogen atom's orbiting electrons to cause a bent molecular geometry.

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A piece of wood and a piece of steel are at the same temperature; however, the steel feels hotter. This is because the steel has
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B- Greater thermal conductivity

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3 years ago
Read 2 more answers
NaHCO3 (s) + HC2H3O2 (aq) = NaC2H3O2 (aq) + H2O (I) + CO2 (g)
Misha Larkins [42]

Moles=volume*concentration   
         =0.1*.83
         =.083 Moles of HC2H3O2
Mole ratio between HC2H3O2 and CO2 is 1:1
This means .083 Moles of CO2

Mass =Moles*Rfm of CO2
         =.083*(12+16+16)
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8 0
3 years ago
Why is something that stores chemical energy?
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Two things that store chemical energy are coal, and wood cause when you have a fire you have to get the chemicals from somewhere to keep your fire live. 
5 0
3 years ago
A 2.00 L sample of gas at 35C is to be heated at constant pressure until it reaches a volume of 5.25 L. To what Kelvin temperat
love history [14]

Answer:

When the volume increased from 2.00 to 5.25L the new temperature is 808.9 K ( =535.75 °C)

Explanation:

Step 1: Data given

The initial volume of the sample = 2.00 L

The initial temperature = 35 °C =  308 K

The increased volume = 5.25 L

Pressure = constant

Step 2: Calculate the new temperature

V1/T1 = V2/T2

⇒ with V1 = the initial volume = 2.00 L

⇒ with T1 = the initial volume = 308 K

⇒ with V2 = the new volume = 5.25 L

⇒ with T2 = the new temperature

2.00 / 308 = 5.25 / T2

0.00649 = 5.25/T2

T2 = 5.25/ 0.00649

T2 = 808.9 K

When the volume increased from 2.00 to 5.25L the new temperature is 808.9 K ( =535.75 °C)

7 0
3 years ago
Calculate the osmotic pressure at 41 degrees C of a 0.078 M solution of glucose. Enter your answer using 2 decimal places!!!!
Tems11 [23]

Answer:

Osmotic pressure is: 2,01 atm

Explanation:

Osmotic pressure is the minimum pressure that you needs to be apply to a solution to prevent the inward flow of its pure solvent across a semipermeable membrane. The formula of osmotic pressure  is:

π = M×R×T

Where:

M is molar concentration of dissolved species (units of mol/L). <em>0,078M</em>

R is ideal gas constant (0.08206 L atm mol⁻¹ K⁻¹, ).

T is the temperature on the Kelvin scale. 41°C +273,15 = 314,15 K

Replacing you have:

π = 0,078M×0.08206 L atm mol⁻¹ K⁻¹×314,15 K

<em>π = 2,01 atm</em>

<em></em>

I hope it helps!

6 0
3 years ago
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