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4 years ago

Can a tank of oxygen gas ever be half empty? Explain

Chemistry

2 answers:

Ksivusya [100]4 years ago

5 0

Yes they can. That's why they sell refills for them

Tju [1.3M]4 years ago

5 0

Yes, they can be half empty. Oxygen canister's contain different types of oxygen some are very pure. They are filled at very high pressures.

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Give an example of two elements that would form a covalent bond

Tamiku [17]

Hydrogen carbon and oxygen commonly form covalent bonds.

HOPE THIS HELPS!

4 0

3 years ago

You carefully weigh out 20.00 g of CaCO3 powder and add it to 81.00 g of HCl solution. You notice bubbles as a reaction takes pl

Zepler [3.9K]

Answer:

The relevant equation is:

CaCO₃ + 2HCl → CaCl₂ + H₂O + CO₂

Explanation:

1 mol of calcium carbonate can react to 2 moles of Hydrochloric acid to produce 1 mol of water, 1 mol of calcium chloride and 1 mol of carbon dioxide.

The formed CO₂ is the reason why you noticed bubbles as the reaction took place

3 0

3 years ago

Nountains are formed at continental plates that converge because they have similar _______.

zheka24 [161]

Because of how they grow

5 0

3 years ago

What is the volume of 40.0 grams of argon gas at STP ?

MrRa [10]

Answer:

24.9 L Ar

General Formulas and Concepts:

Atomic Structure

Reading a Periodic Table
Moles
STP (Standard Conditions for Temperature and Pressure) = 22.4 L per mole at 1 atm, 273 K

Aqueous Solutions

States of Matter

Stoichiometry

Using Dimensional Analysis

Explanation:

Step 1: Define

[Given] 40.0 g Ar

[Solve] L Ar

Step 2: Identify Conversions

[PT] Molar Mass of Ar - 39.95 g/mol

[STP] 22.4 L = 1 mol

Step 3: Convert

[DA] Set up: $\displaystyle 40.0 \ g \ Ar(\frac{1 \ mol \ Ar}{39.95 \ g \ Ar})(\frac{22.4 \ L \ Ar}{1 \ mol \ Ar})$
[DA] Divide/Multiply [Cancel out units]: $\displaystyle 24.9235 \ L \ Ar$

Step 4: Check

Follow sig fig rules and round. We are given 3 sig figs.

24.9235 L Ar ≈ 24.9 L Ar

5 0

3 years ago

Which part of the earth system contains the air we breathe

Gnom [1K]

The atmosphere contains the air we breathe

4 0

3 years ago