Answer:
Explanation:
First, lets find the molar mass of CO². This is approximately 12 + 2(16) = 44 g/mol. Now, let's set up the conversions.
This is Avogadro's number
↓
243.6g CO² * (1 mol CO² /44g CO²) * (6.023 * 10^23 molecules/ 1 mol)
When we cancel out the units, we are left with 3.33 * 10^23 molecules of carbon dioxide. I hope this makes sense!
WELL IT DEPENDS ON WHAT IT DOING IT TO BUT TRY SOLID
Answer:
1st step : find the number of moles for the known substance
number of moles =mass/ relative molecular mass
n=23/Li2O2
n=23/(14+32)
n =23/46
n= 0,5moles
2nd step : balance the equation
2Li202 +2H20-----> 4LiOH +O2
3rd step : find the mole ratio of the known or stated using the balanced equation
Li2O2 : O2
2 : 1
4th step :find the number of moles for the asked using the mole ratio using simple proportion
Li2O2 :O2
2 :1
0,5 :???
0,5/2 ×1
= 0,25moles for (O2)
5th step : find the asked either mass , volume , concentration
number of moles = volume/molar gas volume
volume = number of moles × molar gas volume
v = 0,25moles × 28dm^3
v= 7 dm^3 of (O2)
Greenhouse effect is the process of trapping sun radiation in the earth surface, so as to make the planet warm. It is a natural phenomenon in which sun rays that enters the earth surface are re-radiated into the earth surface causing the heat trap in the earth.
In similar manner, green house also trap radiation inside the glass house. The sun rays once reach inside the glass house, strike on plants and objects and reflected back. For entire radiation to escape from the green house, the heat flow between the two points must be proportional to the temperature difference and thermal conductivity. The glass of which the green house are made up, have low thermal conductivity. So, temperature must rise inside glass house so to maintain the heat flow rate of incoming and outgoing radiation.
The green house glass are insulated and they trap the infrared emitted by the objects inside the green house from escaping outside. Since the infrared have longer wave lengths, it is released slowly.
Also, the thermal energy inside the glass house are transferred by convection process. But the glass walls and roof act as insulator, keeping the radiant energy from escaping outside the green house.<span />
