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IrinaVladis [17]
3 years ago
9

Which two elements on the periodic table are in the same period? 1:b and in 2:na and s 3:k and ba 4:se and te

Chemistry
2 answers:
KengaRu [80]3 years ago
8 0
The answer will be 4
zhannawk [14.2K]3 years ago
5 0
Se and te
hope this helps xx
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A solution contains 14 grams of KCl in 100. grams of water at 40°C. What is the minimum amount of KCl that must be added to make
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Answer:

1386g

Explanation:

Solubility of a solute is the ability of the solute to mix into a liquid (the solvent). It measures the highest amount of substance mixed into a liquid solvent while they are both at equal amounts.

if 14g dissolved in 100cm3

  the amount that will dissolve in 1000cm3 = 14 x 1000/ 100

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1. Calculate the average reaction rate expressed in moles H2 consumed per liter per second.
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Answer:

1) 0.0025 mol/L.s.

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Explanation:

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<em>H₂ + Cl₂ → 2HCl.</em>

<em></em>

<em>The average reaction rate = - Δ[H₂]/Δt = - Δ[Cl₂]/Δt = 1/2 Δ[HCl]/Δt</em>

<em></em>

<em>1. Calculate the average reaction rate expressed in moles H₂ consumed per liter per second.</em>

<em></em>

The average reaction rate expressed in moles H₂ consumed per liter per second = - Δ[H₂]/Δt = - (0.02 M - 0.03 M)/(4.0 s) = 0.0025 mol/L.s.

<em>2. Calculate the average reaction rate expressed in moles CI₂ consumed per liter per second.</em>

<em></em>

The average reaction rate expressed in moles Cl₂ consumed per liter per second = - Δ[Cl₂]/Δt = - (0.04 M - 0.05 M)/(4.0 s) = 0.0025 mol/L.s.

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3 years ago
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3 0
3 years ago
Read 2 more answers
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