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3 years ago

What is the atomic number and weight of Potassium?

Chemistry

1 answer:

il63 [147K]3 years ago

5 0

Answer:

Atomic Number: 19

Approximate Weight: 39.10 g/mol

Element: Alkali Metal

Explanation:

The Periodic Table of Elements gives these 3 information already.

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The diagram below shows the layers in Earth's interior.

Arada [10]

Answer:

layer B is liquid because of the inner members and layer A is solid because of the outer members

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2 years ago

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3 years ago

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What is the formula of Potassium hydroxide? What is it common name? Is it Alkali?

seropon [69]

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Question: What is the formula of Potassium hydroxide? What is it common name? Is it Alkali?

Answer: The formula of Potassium hydroxide is KOH. It's common name is Caustic Potash. Yes, it is alkali because Potassium is the most reactive metal.
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3 years ago

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How many atoms does the formula 2HgO have?

yKpoI14uk [10]

Answer:

Explanation:

2HgO

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3 years ago

A ridged steel tank filled with 62.7L of nitrogen gas of 85.0L atm

mylen [45]

The final gas pressure : 175.53 atm

<h3>Further explanation</h3>

Maybe the complete question is like this :

A ridged steel tank filled with 62.7 l of nitrogen gas at 85.0 atm and 19 °C is heated to 330 °C while the volume remains constant. what is the final gas pressure?

The volume remains constant⇒Gay Lussac's Law

<em>When the volume is not changed, the gas pressure in the tube is proportional to its absolute temperature </em>

$\tt \dfrac{P_1}{T_1}=\dfrac{P_2}{T_2}$

P₁=85 atm

T₁=19+273=292 K

T₂=330+273=603 K

$\tt P_2=\dfrac{P_1\times T_2}{T_1}\\\\P_2=\dfrac{85\times 603}{292}\\\\P_2=175.53~atm$

8 0

3 years ago