Answer:
HCL, H2SO4 and HNO3 are strong acids.
NaOH, KOH and LiOH are strong bases.
H3PO4, CH3COOH and HF are weak acids.
NH4OH, N2H4 and Zn(OH)2 are weak bases.
Explanation:
HCL, H2SO4 and HNO3 are strong acids because they completely converted into ions and gives H ion in the solution while H3PO4, CH3COOH and HF are weak acids due to their half ionization in the solution. NaOH, KOH and LiOH are strong bases completely dissociate in the solution and give OH ion while NH4OH, N2H4 and Zn(OH)2 are weak bases which cannot dissociate completely and yield less amount of OH ions. when acid and base combine together, they exchange their partners produces salt and water.
Answer:
The reactant that is limiting is the Na2B4O7, and the mass of the excess reagent (H2SO4) is 2.5627g.
Explanation:
The unbalanced reaction is:
Na2B4O7 + H2SO4 + H2O ⇒ H3BO3 + Na2SO4
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First the equation is balanced
Na2B4O7 + H2SO4 + 5H2O ⇒ 4H3BO3 + Na2SO4
According to the balanced equation we observe that it takes 1 mol of Na2B4O7 to react with 1 mol of H2SO4.
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Then the molecular weights of each reactant are determined:
MWNa2B4O7 = 201.197 g/mol
MWH2SO4 = 98.075 g/mol
- It is calculated how many moles will react with 5 initial grams of each.
201.197 g of Na2B4O7 ⇒ 1 mol
5 g ⇒ X
of Na2B4O7
98.075 g of H2SO4 ⇒ 1 mol
5 g ⇒ X
of H2SO4
The limiting reagent is the one that is consumed first, in this case it is Na2B4O7, since 0.02485 moles are needed for both reactants, then there are 0.02613 moles of H2SO4 left over. With these moles the grams of excess reagent are calculated.
D.
this is used for measuring atomic mass
AMU
The overall reaction is:
Br₂(g) + 2 NO(g) ↔ 2 NOBr(g)
rate law = k [Br₂][NO]²
The first step of the overall reaction is:
NO(g) + Br₂(g) K₁⇄⇄K-1 NOBr₂(g)
rate law 1 = k₁ [Br₂][NO] or
rate law 2 = k-1 [NOBr₂]
The second step of the overall reaction is:
NOBr₂(g) + NO(g) →K₂→ 2 NOBr
rate law 3 = k₂[NOBr₂][NO]
So, rate law of overall reaction can be obtained as follows:
(rate law 1)*(rate law 3) / (rate law 2)
= [(k₁[Br₂][NO])* (K₂[NOBr₂][NO])] / k₋₁[NOBr₂]
= [k₁k₂/k₋₁][NO]²[Br₂]
So the correct answer is:
[k₁k₂/k₋₁][NO]² [Br₂]
Energy can be generated without burning fossil fuels
Explanation:
The main positive effect of nuclear power plants is that energy can be generated without burning off fossil fuels.
Nuclear power is an alternate source of energy.
- As much as there are problems with disposal of radioactive wastes, nuclear energy does from power plants does not release carbon dioxide into the atmosphere.
- Burning of fossil fuel creates an environmental mess by releasing pollutants into the atmosphere.
- This way, global warming can result.
- Nuclear energy does not involve the burning of any fossil fuel. Nuclear fuels are used in this process.
learn more:
Non-renewable energy brainly.com/question/2948717
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