Scientist typically use the international system of measurements, or the metric system. If you mean English as in England, then yes.<span> The United States' system of measurement is not usually used by scientists.</span>
The decomposition of wastewater can lead to the following:
II. Eutrophication and algal blooms.
III. The development of dead zones.
<h3>What is a
wastewater?</h3>
A wastewater can be defined as a body of water that has been contaminated due to human use in homes, offices, schools, businesses etc.
Ideally, wastewater should be disposed in accordance with the local regulations and standards because they typically are unhygienic for human consumption or use. Thus, floor drain are used in the kitchen, bathroom and toilet to remove wastewater, so as to mitigate stagnation and to improve hygiene.
Generally, the decomposition of wastewater can lead to the following:
- Eutrophication and algal blooms.
- The development of dead zones.
Read more on wastewater here: brainly.com/question/17791594
Answer:
The reaction is endothermic with a heat of solution of approximately 6.09 kcal/mol
Explanation:
First of all we will calculate the number of moles of ammonium nitrate.
Number of moles = mass/ molar mass
Number of moles = 8.0 g/ 80.0 g/mol
Number of moles = 0.1 mol
Formula:
q₁ + q₂ = 0 .......(1)
q₂
q₂ = mcΔT
ΔT = 12.4°C - 22.9°C
ΔT = -10.5°C
m = 8 g + 50 g = 58 g
c = 1.0 cal/g.°C
q₂ = mcΔT
q₂ = 58 g × 1.0 cal/g.°C ×-10.5°C
q₂ = -609 cal
q₁
q₁ = nΔH(sol)
q₁ = 0.1 mol × ΔH(sol)
Now we will put the values of q₁ and q₂ in equation 1
q₁ + q₂ = 0
0.1 mol × ΔH(sol) + ( -609 cal) = 0
ΔH(sol) = +609 cal / 0.1 mol
ΔH(sol) = +6090 cal/mol
cal to kcal
6090/1000
ΔH(sol) = +6.09 kcal/mol
Explanation:
As it is known that there are two types of properties. These are extensive and intensive.
Extensive properties : Properties that depend on the size or amount of system. For example, mass, volume etc.
Intensive properties : Properties that do not depend on the size or amount of system. For example, density, melting point, specific heat capacity etc.
On the basis of these properties water and ethanol are distinguished as follows.
- Density of water is 997 kg/ whereas density of ethanol is 789 kg/. Both these liquids can be separated by intensive properties.
- Melting point of water is zero degree celsius whereas melting point of ethanol is -114.1 degree celsius.
- Specific heat capacity of water is 4.184 whereas specific heat capacity of ethanol is 2.46 .
- Mass of the given liquids cannot be differentiated because they will keep on changing depending on the quantity required. As mass is an extensive property, therefore, it is difficult to differentiate between the two liquids.
Thus, we can conclude that properties like density, melting point, specific heat capacity can help a chemist distinguish between ethanol and water.