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I am using Sodium Carbonate Peroxyhydrate to control filamentous algae in a garden pond.
After adding the SCP at a rate of .5lb/2800 USG the pH rises to 8.

Can I add sodium bisulfate at a rate of 150g to the SCP or only afterwards to the body of water in order to return the pH to 7?


In Progress...
A sample of hydrated zinc sulfate. ZnSO4.xH2O, weighing 3.59g was heated to a constant mass in a crucible to give 2.01g of solid residue.

a) How many moles of solid residue remained in the crucible?
b) How many moles of substance were lost during the experiment?
c) Calculate the value of x in the formula ZnSO4.xH2O.
In Progress...
what is the difference between vacuum pump and compressor and also describe the working principle of liquid ring compressor and liquid ring vacuum pump?
In Progress...
1. In aqueous solutions there are three forms of glucose: the a-form of glucose (36%), the b-form (64%) and a trace amount of the open chain form. Explain (a) why the cyclic forms exist predominately in solutions, and the (b) why the b-form is more abundant than the a-form?
In Progress...
a solution contains 180g of glucose (C6H12O6) and 162g of water what is the mole fraction of glucose
In Progress...
1. Calculate the standard enthalpy change for the reaction:
C2H4(g) + H2(g)→C2H6(g)
given that the enthalpy of combustion
for the reactants and products are:
∆Hºc(C2H4)(g) = -1411 kJ mol^-1∆Hºc(C2H6)(g) = -1560 kJ mol^-1∆Hºc(H2)(g) = -286 kJ mol-1.

2. Calculate the enthalpy change of
combustion for ethene gas (C2H4) given the
following enthalpy changes of formation:
∆Hºf(C2H4)(g) = +52 kJ mol^-1∆Hºf(CO2)(g) = -394 kJ mol^-1
∆Hºf(H2O)(g) = -286 kJ mol^-1

3.Calculate the standard entr
opy change for the reaction:
N2+ 3H2→2NH3
given the standard entropies
Sº(N2)(g) = 191.6 J K^-1 mol^-1
Sº(H2)(g) = 130.6 J K^-1 mol^-1
Sº(NH3)(g) = 193.3 J K^-1 mol^-1
In Progress...
The hydrogen oxalate ion (HC2O4−) is amphiprotic. Write another equation showing how it acts as a base toward water.
Express your answer as a chemical equation. Identify all of the phases in your answer.
In Progress...
In Progress...
In Progress...
Ph-Ch2-Cl is very reactive towards both Sn1 and Sn2 reactions.Explain
In Progress...
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