At <span>standard temperature
and pressure, these elements have
very similar properties; they are all shiny, silvery-white, semi-reactive metals that have industrial and biological applications. The
Alkaline Earth Metals are elements of group 2 of the periodic table, which
includes beryllium, magnesium, calcium, strontium, barium, and radium.
Moreover, group 2 elements are nonmetallic
substances that are insoluble in water and heat resistant in nature.</span>
Answer:
.2 M
Explanation:
grams/molar mass=ans./volume(L)=molarity
5.6/56=ans./.500=.2 M
- Hope that helps! Please let me know if you need further explanation.
Hey! So a strong acid would have a pH of about 0-3. So if it equals 2 it must be a strong acid.
The answer is: D. Biological precipitation.
Biological precipitation is the deposition of minerals from solution by the agency of organisms
.
Deposition is the geological process in which sediments, soil and rocks are added to a landform or land mass.
Ocean sediments originate from numerous sources:
1) biological activity (biogenous).
2) weathering and erosion of the continents (terrigenous/lithogenous).
3) volcanic eruptions (volcanogenous).
4) chemical processes (hydrogenous).
Calcium carbonate (CaCO₃) is made of calcium, carbon and oxygen atoms.
Answer:
The pressure equilibrium constant for the combustion of ammonia is 0.132
Explanation:
the balanced chemical reaction of the combustion of ammonia is as follows:
4NH3 + 3O2 = 2N2 + 6H2O
initially we have 4.8 1.9 0 0
in equilibrium 3.54 0.955 0.63 1.89
therefore the value of the equilibrium constant in terms of pressures is equal to:
Keq = ((PN2)^2 * (PH2O)^6)/((PNH3)^4 * (PO2)^3) = ((0.63^2)*(1.89^6))/((3.54^4) * (0.955^3)) = 0.132