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babymother [125]
3 years ago
12

Write any four effects of heatGive any five examples of conductors​

Chemistry
1 answer:
liraira [26]3 years ago
3 0

Explanation:

Hey there! Down here!

Four effects of heat are :-

  1. In electric Heaters
  2. In geysers
  3. In thermos [ a bottle type used to keep water at its nominal temperature when is was inserted]
  4. In Micro Oven and OTG's

Five examples of Conductors :-

  1. Graphite
  2. Silver
  3. Copper
  4. Alumunium
  5. Steel

Hope it helps :)

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The Ba(OH)2 dissociates as Ba+2 + 2 OH-. H2SO4 dissociates as 2 H+ + SO4 -2.
suter [353]

Answer:

The balanced equations for those dissociations are:

Ba(OH)₂(aq) → Ba²⁺(aq) + 2OH⁻ (aq)

H₂SO₄ (aq) → 2H⁺(aq) + SO₄⁻²(aq)

Explanation:

As a strong base, the barium hidroxide gives OH⁻ to the solution

As a strong acid, the sulfuric acid gives H⁺ to the solution

Ba(OH)₂, is a strong base so the dissociation is complete.

H₂SO₄ is considerd a strong acid, but only the first deprotonation is strong.

The second proton that is released, has a weak dissociation.

H₂SO₄ (aq) → H⁺(aq) + HSO₄⁻(aq)

HSO₄⁻(aq) ⇄ H⁺ (aq) + SO₄⁻² (aq)       Ka

6 0
3 years ago
How many moles of NaOH are present in 27.5 mL of 0.270 M NaOH?
Naddik [55]
The solution for the question above is:

C = 0.270 
<span>V = 0.0275L </span>
<span>n = ? </span>

<span>Use the molar formula which is: C = n/V </span>
<span>Re-arrange it to: n = CV </span>
<span>n = (0.270)*(0.0275) </span>
<span>n = 0.007425 mols </span>
<span>(more precise) n = 7.425 x 10^-3 mols
</span>
7.425 x 10^-3 mols is the answer.
8 0
3 years ago
If you burn your hand on the handle of the hot pot what type of heat transfer took place
Serga [27]
CONDUCTION!!! :) Conduction is direct surface to surface contact.
3 0
4 years ago
Read 2 more answers
Is heating water in a pan a chemical or physical change? Need Reasons!!!
Cerrena [4.2K]
It is only a physical change as you are only changing the state of the substance (from liquid to gas)
8 0
4 years ago
Read 2 more answers
For the reaction 1Pb(NO3)2 + 2KI −−&gt; 1PbI2 + 2KNO3, how many moles of lead iodide (PbI2) are produced from 300.00 g of potass
andreev551 [17]

Answer:

moles PbI₂ produced = = 0.9 mole (1 sig. fig.)

Explanation:

Given                   Pb(NO₃)₂  +    2KI     −−>    PbI₂ + 2KNO₃

                                                  300g         ?moles

moles KI = 300g KI/166g/mol = 1.81 mole KI

Rxn ratio for KI and PbI₂ => 2:1

∴ moles PbI₂ produced = 1/2(1.81 mole) = 0.9036144 mole (calculator answer)

= 0.9 mole (1 sig. fig.)

4 0
3 years ago
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