The noble gas notation is as follows- you must start with the noble gas that is before the element which in this case is Krypton and then from there you continue the electron configuration as follows- [Kr] 5s^2 4d^10 5p^2
Answer:
It really depends on the situation. If you have 1000 elk and 2 wolves, they really would play a better role in killing off elk so that the elk population doesn't get over populated and diseased, causing a major population collapse. But if there were only 10 elk and 50 wolves, the wolves would play a very negative role on the population.
Hope this helps!
Explanation:
Answer:
i am thinking that they will be extinct
Explanation:
if their habitat is dying then they are dying and it would be sad
To solve this we assume that the sample gas is an
ideal gas. Then, we can use the ideal gas equation which is expressed as PV =
nRT. At a constant pressure and number of moles of the gas, the ratio T/V is
equal to some constant. At another set of condition of temperature, the
constant is still the same. Calculations are as follows:
T1 / V1 = T2 / V2
V2 = T2 x V1 / T1
V2 = 350 K x 500 mL / 150 K
<span>V2 = 1166.67 mL</span>
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</span>
<span>Therefore, the new volume of the system from the temperature change would be 1166.67 mL or about 1.2 L.</span>
Answer:
Option A. This step is to remove water from the ether layer.
Explanation:
When the goal of an experiment is to conduct a reaction and isolate the product, it is referred to as work-up. The work-up refers to method aimed at purifying the material and most commonly occur in a separatory funnel. Solutions are added to the funnel to either extract or wash the mixture with the goal of isolating the product from excess reagents, catalysts, solvent, side product that may arise from side reactions.
Common washes include: Water, Sodium Bicarbonate, Sodium Carbonate, saturated sodium chloride (brine).
When an organic layer ( e.g. diethyl ether, ethyl acetate) is washed with brine, the purpose of the wash is to REMOVE LARGE AMOUNT OF WATER that may be dissolved in the organic layer.
Brine works to remove water from an organic layer because it is highly concentrated (since Sodium Chloride is highly water soluble. Therefore, the most likely reason for washing a reaction product mixture containing hydrocarbons in diethyl ether with with brine solution in a separatory funnel is to remove the water from the ether layer.
