Answer:
4.44 M
Explanation:
The absorbance of a solution is a function of its concentration through the equation, known as Beer's law, as:
A = ε c l
where A is the absorbance, ε is is a constant of proportionality called molar absorptivity in units of L/mol·cm, c is the concentration in mol/L (M), and l is the length of the cuvette we use to measure the absorbance, usually 1 cm.
Now the above equation is a function of c in the form y= mx + b, which is exactly the linear relationship stated in the question.
Therefore
y = 0.0425 + 0.011
A = (εl) c
Therefore
slope = m = ε (1) = 0.0425
Knowing ε we can calculate the concentration of the diluted unknown:
0.200 = 0.0425 c + 0.011
c = (0.200 - 0.011)/0.425 = 0.44 M
This the concentration of the diluted solution, the original concentration of the unknown solution can be calculated from the formula V₁M₁ = V₂M₂
calling M₁ our undiluted solution, we have
M₁ = V₂M₂/V₁ = 50 mL x 0.44 M / 5.00mL = 4.44 M
(Notice there is no need to convert the volume to liters in the above equation since they appear in both sides of the equation and so they cancel each other).
Answer/ Explanation
A sustainable ecosystem or biome is one in which the network of organisms can support themselves over long periods of time.
This usually means they are diverse, with all the elements required for the organisms to survive. This includes lots of different species, all working together in their separate ecological niches to maintain a balance in the ecosystem.
There will be adequate producers to provide food, herbivores, primary, secondary, and potentially even tertiary predators. There will also be decomposers present to recycle nutrients.
Other important features include sufficient space for the organisms to survive in their required habitats, a sufficient water supply for all organisms, and limited human activity to prevent interruptions.
Answer:
Radiation is a method of heat transfer that does not rely upon any contact between the heat source and the heated object as is the case with conduction and convection. Heat can be transmitted through empty space by thermal radiation often called infrared radiation
what is a non-polar molecule? Atoms are made of small particles. When atoms bond together to form molecules. They share or give electrons. If the electrons are shared equally by the atoms, then there is no resulting charge making the molecule nonpolar. Polar molecules are the complete opposite.