From n=3 to n=1
<span>according to extension of the Wavelength in electron transition from n=3 to n=1 </span>
The Ideal Gas Law states that pressure (P) × volume (V) is equal to the # of moles (n) of the gas × a constant (R) × temperature (T), such that the equation is:
PV = nRT
At standard temp and pressure (STP), the T is 0°C or 273.15K, the P is 1 atm or 760 torr, and the R constant is 0.0821. Therefore the equation, solved for V becomes: V = nRT/P, or V = n(0.0821)(273)/1, so that it reduces to V = 22.4 Liters, when n = 1 mole.
So the V of any gas at STP is 22.4 L / mole
The two ways that climate change can degrade soil are due to carbon dioxide content in soil and its effect on the ecosystem.
Explanation:
When the concentration of carbon dioxide in the atmosphere increases the organisms such as microbes in the soil break down the organic matter and causes even more increase in the carbon dioxide content. This leads to the release of greenhouse gases which further releases a large amount of methane which is harmful.
Secondly, there should always be a balance between the soil and the climate otherwise it would affect the natural and semi-natural ecosystems. When there are changes in the distribution of water to the plants it affects the hydro-logical cycle. Thus, climate change will naturally lead to changes in the functions of soil and degradation occurs.
Answer:
15.9 grams of copper is produced
Explanation:
Step 1: Data given
Volume of hydrogen = 5.60 L ( at STP)
Step 2: The balanced equation
CuO (s) + H2 (g) → Cu (s) + H2O (g)
Step 3: Calculate moles H2
22.4 L = 1 mol
5.60 L = 0.25 moles
Step 3: Calculate moles Cu
For 1 mol CuO we need 1 mol H2 to produce 1 mol Cu and 1 mol H2O
For 0.25 moles H2 we'll have 0.25 moles Cu
Step 4: Calculate mass Cu
Mass Cu = moles Cu * molar mass Cu
Mass Cu = 0.25 moles * 63.546 g/mol
Mass Cu = 15.9 grams
15.9 grams of copper is produced
This doesnt make sense can you upload a picture for me so i can understand the question?