A city when its operation is normal uses a supply of drinking water
containing 15 mg /L of chloride (Cl-), but during periods of high water demand,
mixes with groundwater containing 65 mg/L Cl-. The two waters mix
completely in a 1400 m3 tank and then sent to the distribution system. the
demand for many days has been ~500 m3/d, and all the water has come from
the main supply. So, the demand increases to 700 m3 /d, and the additional
200 m3/d is extracted from the groundwater supply. How long can
continue with this operating strategy before the water entering the
distribution system contains ≥ 20 mg/L Cl-? (Note: chloride is not reactive).
What type of reaction is formed when a phenol reacts with aluminum oxide under basic condition (pH8).what type of bonding is formed when phenol is begin adsorbed onto Al2O3
1. A sample of vinegar is 5.38%
1 point
acetic acid by mass. What mass
of acetic acid is contained in a
775 mL bottle of vinegar?
Assume density of vinegar is
1.01 g/mL.
A sample of vinegar is 5.38% acetic acid by mass. What mass of acetic acid is contained in a 775 mL bottle of vinegar? Assume density of vinegar is 1.01g/mol.
A sample of helium occupies a volume of 3.8 liters at -45°C. Calculate the new volume when the gas is heated to 45°C?
Considering only ions with charges of +1, +2, -1 and -2, or neutral atoms, give the symbols for 4 species that are isoelectronic with the telluride ion, Te2-
calculate the total volume of oxygen at STP needed to combust that amount of gasoline (1 mol=22.4 L at STP) and we have 24972413.79g of c6h18
If 2.0 grams of carbon react completely with oxygen, how many grams of carbon dioxide can be produced?
PCl3 and CH4 both have a tetrahedral electronic geometry but their molecular geometries are not the same. What is the difference.