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Damm [24]
3 years ago
8

Which of the following elements probably has the most properties in common with lead (Pb)?

Chemistry
1 answer:
Elodia [21]3 years ago
6 0

Tin(Sn)

Explanation:

The element with similar chemical properties with lead (Pb) from the given options is tin(Sn).

  • Chemical properties of an element depends on the number of valence electrons they have.
  • Element in the same group on the periodic table have similar chemical properties because the number of valence electrons are the same.
  • Tin and lead belong to group iv on the periodic table.
  • Other elements in this group are carbon, silicon, germanium
  • All these elements have similar chemical properties.

Learn more:

Periodic table brainly.com/question/8543126

#learnwithBrainly

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Bleach contains the active ingredient NaClO. Analysis of bleach involves two sequential redox reactions: First, bleach is reacte
Alisiya [41]

Answer:

0,31%

Explanation:

For the reaction:

I₂ + 2 S₂O₃²⁻ → 2 I⁻ + S₄O₆²⁻

0,043 L × 0,117 M of sodium tiosulfate = 5,031x10⁻³ moles of S₂O₃²⁻

5,031x10⁻³ moles of S₂O₃²⁻ × \frac{1 I_2 mol}{2 S_{2}O_3 mol^{2-}} = <em>2,5156x10⁻³ moles of I₂</em>

These moles of I₂ were produced from:

ClO⁻⁻ + 2 H⁺ + 2 I⁻ → I₂ + Cl⁻ + H2O

2,5156x10⁻³ moles of I₂ ≡ moles of NaClO

2,5156x10⁻³ moles of NaClO ×\frac{74,44 g}{1mol} =<em> 0,187 g of NaClO</em>

Thus, percentage composition by mass is:

\frac{0,187 g of NaClO}{60 g Of Bleach} x 100 =<em> 0,31%</em>

I hope it helps!

5 0
4 years ago
How does a change in the temperature of the boiling point indicate that a chemical reaction has occurred?
Elodia [21]

Answer:

A change in temperature is characteristic of a chemical change. ... If temperature increases, as it does in most reactions, a chemical change is likely to be occurring. This is different from the physical temperature change. During a physical temperature change, one substance, such as water is being heated.

4 0
3 years ago
Read 2 more answers
Which composition of water moves to begin a deep water current
jasenka [17]
Cold and high salinity. Hope this helps :)
4 0
3 years ago
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ΔU for a van der Waals gas increases by 475 J in an expansion process, and the magnitude of w is 93.0 J.
timofeeve [1]

Complete question:

ΔU for a van der Waals gas increases by 475 J in an expansion process, and the magnitude of w is 93.0 J. calculate the magnitude of q for the process.

Answer:

The magnitude of q for the process 568 J.

Explanation:

Given;

change in internal energy of the gas, ΔU = 475 J

work done by the gas, w = 93 J

heat added to the system, = q

During gas expansion process, heat is added to the gas.

Apply the first law of thermodynamic to determine the magnitude of heat added to the gas.

ΔU = q - w

q = ΔU +  w

q = 475 J  +  93 J

q = 568 J

Therefore, the magnitude of q for the process 568 J.

6 0
3 years ago
Explain the role of molecular geometry in determining molecular polarity
Ede4ka [16]
The molecular geometry of a compound helps to determine polarity b/c, it indicates the number of lone pairs on a central atom thus giving it specified angles and polarity (only if there are lone pairs b/c if there are no lone pairs on the central atom, then it is nonpolar.
5 0
3 years ago
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