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Pavlova-9 [17]
2 years ago
11

When rocks break down or decompose, they can form

Chemistry
1 answer:
Fittoniya [83]2 years ago
3 0

Answer:

C

Explanation:

because when rocks break down they can form and once they form they can make more and even bigger rocks hopes this helps.

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Disadvantages of modern periodic table?<br>​
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Answer:

It has its elements with mass numbers phrased in many decimal places, it requires one to round off to get the actual value.

The atomic numbers of some elements such as Protonium were just guessed.

4 0
2 years ago
Explain the metallic and non metallic behavior of an element based on its position in the periodic table
mash [69]

Answer:

Metallic character refers to the level of reactivity of a metal. Non-metallic character relates to the tendency to accept electrons during chemical reactions. Metallic tendency increases going down a group. Non-metallic tendency increases going from left to right across the periodic table.

Explanation:

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3 years ago
What does science mean to you?
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8 0
3 years ago
Calculate the molar solubility of ag2so4 in each solution below. the ksp of silver sulfate is 1.5 × 10−5. (a) 0.36 m agno3: (b)
Lana71 [14]

Answer:

a) 1.157 x 10⁻⁴ M.

b) 0.0032 M.

Explanation:

  • Ag₂SO₄ is sparingly soluble salt in water which is dissociate according to:

<em>Ag₂SO₄ ⇄ 2Ag⁺ + SO₄²⁻.</em>

Ksp = [Ag⁺][SO₄²⁻] = (2s)²(s) = 1.5 x 10⁻⁵.

4s³ = 1.5 x 10⁻⁵.

s³ = 1.5 x 10⁻⁵/4 = 3.75 x 10⁻⁶.

∴ s = ∛(3.75 x 10⁻⁶) = 0.0155 M.

<em>a) 0.36 M AgNO₃:</em>

  • The dissociation of Ag₂SO₄: Ag₂SO₄ ⇄ 2Ag⁺ + SO₄²⁻, will be accompanied by the ionization of AgNO₃:

<em>AgNO₃ → Ag⁺ + NO₃⁻.</em>

  • So, the concentration of Ag⁺ will be that of AgNO₃  and Ag₂SO₄:

[Ag⁺] = (2s + 0.36)², s is neglected with respect to 0.36 M the concentration resulted from AgNO₃.

So, [Ag⁺] = (0.36)².

∴ Ksp = [Ag⁺][SO₄²⁻] = (0.36)²(s) = 1.5 x 10⁻⁵.

<em>∴ s </em>= 1.5 x 10⁻⁵/(0.36)² =<em> 1.157 x 10⁻⁴ M.</em>

<em>b) 0.36 M Na₂SO₄:</em>

  • The dissociation of Ag₂SO₄: Ag₂SO₄ ⇄ 2Ag⁺ + SO₄²⁻, will be accompanied by the ionization of Na₂SO₄:

Na₂SO₄ → 2Na⁺ + SO₄²⁻.

  • So, the concentration of SO₄²⁻ will be that of Na₂SO₄  and Ag₂SO₄:

[SO₄²⁻] = (s + 0.36), s is neglected with respect to 0.36 M the concentration resulted from Na₂SO₄.

<em>So, [SO₄²⁻] = (0.36).</em>

∴ Ksp = [Ag⁺][SO₄²⁻] = (2s)²(0.36) = 1.5 x 10⁻⁵.

∴ 4s² = 1.5 x 10⁻⁵/(0.36) = 4.166 x 10⁻⁵.

∴ s² = 4.166 x 10⁻⁵/4 = 1.042 x 10⁻⁵.

<em>∴ s</em> = √(1.042 x 10⁻⁵) = <em>0.0032 M.</em>

7 0
3 years ago
Please help no links
jarptica [38.1K]

Answer:

23 L

Explanation:

We'll begin by converting celsius temperature to Kelvin temperature. This can be obtained as follow:

T(K) = T(°C) + 273

Initial temperature (T₁) = 100 °C

Initial temperature (T₁) = 100 °C + 273

Initial temperature (T₁) = 373 K

Final temperature (T₂) = 50.5 °C

Final temperature (T₂) = 50.5 °C + 273

Final temperature (T₂) = 323.5 K

Finally, we shall determine the initial volume of gas. This can be obtained as follow:

Initial temperature (T₁) = 373 K

Final temperature (T₂) = 323.5 K

Final volume (V₂) = 20 L

Initial volume (V₁) =?

V₁/T₁ = V₂/T₂

V₁ / 373 = 20 / 323.5

Cross multiply

V₁ × 323.5 = 373 × 20

V₁ × 323.5 = 7460

Divide both side by 323.5

V₁ = 7460 / 323.5

V₁ = 23 L

Thus, the original volume of the gas is 23 L

7 0
2 years ago
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