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in living things,one of this statement is correct
a)waste must be accumulated
b)waste must be recircled
c)waste must be removed
d)waste must be doubled
In all living organisms, wastes should be removed. Other variants do not suit because: Accumulation of wastes may lead to toxic effects and kill the organism. Only some organisms can...
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How do the following features improve the efficiency of photosynthesis? A. the presence of accessory pigments B. the organization of pigments in a photosystem
A. Increase the rate of photosynthesis by increasing the efficiency of light absorption in both photosystem I and II, specifically in the light harvesting complexes.B. Each photosystem consists of two...
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1. Take the average volume for the three trials. Determine the concentration of hydrochloric acid. Remember, you used 20.0 mL of hydrochloric acid for each trial.
Concentration of HCl=11.65 M
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explain why 0.20 M solutions of hydrobromic acid and hydrochloric acid have the same pH values but 0.20 M solutions of oxalic acid and hydrochloric acid have different pH values.
pH is a measure of how much hydrogen or hydronium ions of a substance dissociates in water. In HCl and HBr, given constant concentration, there is an equal or almost...
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What is the pH of the acetic acid and hydrochloric acid before sodium hydroxide was added hydrochloric acid
The hydrochloric acid will show pH = 1, and the ethanoic acid will show pH = 3.
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In a titration, 25.00mL of 0.10mol L-1 sodium hydroxide solution was required to neutralize 12.5 mL of hydrochloric acid. Calculate the concentration of hydrochloric acid.
0.0025mol X mol NaOH + HCl = NaCl + H2O 1 mol 1 moln(NaOH) = C(NaOH) × V(NaOH) = 0.10 mol L-1 × 0.025L = 0.0025 mol.n(HCl) = X mol = 0.0025 mol.C(HCl) =...
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(2.500*10^-1) mol/L NaOH solution was used to neutralize (1.30*10^1) mL hydrochloric acid. What is the concentration of the hydrochloric acid
13 ml hydrochloric acid = V(acid)0.25 M NaOH = CCacid-?Cacid= (C(NaOH)*V(NaOH))/(V(acid))
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Write the balanced equation for the reaction between hydrochloric acid and magnesium. What mass of the magnesium product is formed when 133.77 g of hydrochloric acid reacts?
m(MgCl2) = 174, 23g2HCl + Mg = MgCl2 + H2
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Consider the reaction of calcium hydroxide and hydrochloric acid. If 63.48 g of the calcium based product forms from 44.50 g of hydrochloric acid, what is the percentage yield?
Ca(OH)2 + 2HCl = CaCl2 + 2H2Om(CaCl2) real = 63.48 gm(CaCl2) = 44.50 / 36.45 / 2 × 110.98 = 67.74 gYield = 63.48/67.74 × 100% = 93.71%
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Suppose that you had added solid sodium hydroxide pellets to hydrochloric acid, instead of adding hydrochloric acid to sodium hydroxide solution. Will the enthalpy change be lower or higher
The enthalpy change will be lower.
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