Answer:
a
Explanation:
its formed from sodium and sodium metal is produced by electrolysis of dry molten sodium chloride.
The correct option is this: OXYGEN WILL HAVE MORE KINETIC ENERGY THAN NITROGEN.
Increasing the temperature of oxygen requires the application of heat. The heat energy that is applied to the gas will make the particles of the oxygen gas to gain more kinetic energy and to move more rapidly than before, by so doing, the particles will colloid more with one another and with the wall of the container. The kinetic energy of the particles of the nitrogen gas will remain the same since its temperature was not affected.
The answer i think is 5.0
Work = -Pressure external*Volume change
<span>-1 atm * (20 - 1) = -19 atm-L. </span>
<span>1 atm-L = 101.324999971 J </span>
<span>So -19 * 101.32 = -1925 J </span>
<span>B. </span>
<span>Calculate each step individually then sum the answers. </span>
<span>For step 1) </span>
<span>-5 * (4-1) = -15 atm-L </span>
<span>step 2) </span>
<span>-1 * (20-4) = -16 atm-L </span>
<span>Thus total work = -31 atm-L </span>
<span>convert to joules, </span>
<span>-3141 J</span>
The molar mass of the carbohydrate : = 304.19 g/mol
<h3>Further explanation</h3>
Given
6.54 g carbohydrate
102.5 g of water
osmotic pressure of 4.61 atm
T = 20+273=293 K
Required
The molar mass
Solution
General formula:
π = osmosis pressure (atm)
M = solution concentration (mol / l)
R = constant = 0.08205 L atm mol-1 K-1
T = Temperature (Kelvin)
Find molarity(M) :
4.61 atm = M . 0.08205 x 293
M = 0.192 mol/L(mol solute per 1 liter solution)
Total mass of solution :
= 6.54 g + 102.5
= 109.04 g
Volume of solution :
= density x mass
= 1.024 g/ml x 109.04 g
= 111.66 ml
= 0.112 L
mol Carbohydrate (solute):
= M x V
= 0.192 x 0.112
= 0.0215 mol
Molar mass of Carbohydrate :
= mass : mol
= 6.54 : 0.0215
= 304.19 g/mol
