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Allisa [31]
3 years ago
12

Explain why argon is used in tungsten filament lamps​

Chemistry
1 answer:
PSYCHO15rus [73]3 years ago
5 0

Answer:

Because it helps the filament from decaying

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The molecular mass of a substance refers to the:
ololo11 [35]

Answer:

A

Explanation:

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3 years ago
Whats the formula for lithium nitride
Brrunno [24]

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Lithium nitride. Trilithium nitride. 26134-62-3. Lithium nitride (Li3N) Li3N.

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Is aluminum homogeneous or heterogeneous?
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4 years ago
Elements in the same period of the periodic table exhibit similar physical and chemical properties.
Vladimir [108]

Answer:

same valency electrons

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3 years ago
Calculate the ionization constant for the following acids or bases from the ionization constant of its conjugate base or conjuga
suter [353]

Answer:

7.41 × 10⁻⁵

Explanation:

Let's consider the basic dissociation reaction of trimethylamine (CH₃)N).

(CH₃)N + H₂O = (CH₃)NH⁺ + OH⁻

According to Brönsted-Lowry, in this reaction (CH₃)N is a base and (CH₃)NH⁺ is its conjugate acid. The pKb for (CH₃)N is 9.87. We can calculate the pKa of (CH₃)NH⁺ using the following expression.

pKa + pKb = 14

pKa = 14 - pKb = 14 - 9.87 = 4.13

Then, we can calculate the acid dissociation constant for (CH₃)NH⁺ using the following expression.

pKa = -log Ka

Ka = antilog - pKa = antilog -4.13 = 7.41 × 10⁻⁵

8 0
3 years ago
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