The explosive range of methane is 5% to 15%...

Question 1 / 205eccef9ebacbc34ba4d465c8

Question 1 of 205eccef9ebacbc34ba4d465c8

The explosive range of methane is 5% to 15% by volume in air. This means a vapor/air mixture of __________.

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Question 1 of 20

5eccef9ebacbc34ba4d465c8

The explosive range of methane is 5% to 15% by volume in air. This means a vapor/air mixture of __________.

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🔍 Key Concepts

• Lower Explosive Limit (LEL) and Upper Explosive Limit (UEL) – what they mean in practical terms • What “too lean to burn” vs. “too rich to burn” means for a gas/air mixture • How a combustible gas indicator is calibrated in relation to %LEL

💭 Think About

• Think about what happens to flammability when the gas concentration is below the LEL and above the UEL. • If methane’s explosive range is 5% to 15%, what does that say about a mixture at 3%, 10%, and 20%? Which side is ‘lean’ and which side is ‘rich’? • . Consider how a combustible gas indicator interprets a reading of 100% LEL – does that mean 100% gas, or the gas concentration that just reaches the lower explosive limit?

✅ Before You Answer

• Verify which concentrations are inside the 5–15% explosive range and which are outside it. • Check the definitions: too lean to burn is on which side of the LEL, and too rich to burn is on which side of the UEL. • Confirm how %LEL is defined: 100% LEL corresponds to what actual gas percentage when the LEL is 5%?

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Question 1 of 20

The explosive range of methane is 5% to 15% by volume in air. This means a vapor/air mixture of __________.

3 percent methane by volume is too rich to burn

5 percent methane by volume will give a reading of 100 percent LEL on a combustible gas indicator

10 percent methane by volume is too rich to burn

20 percent methane by volume is too lean to burn

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Question 1 / 205eccef9ebacbc34ba4d465c8

Question 1 of 205eccef9ebacbc34ba4d465c8

The explosive range of methane is 5% to 15% by volume in air. This means a vapor/air mixture of __________.

Back

Question 1 of 20

5eccef9ebacbc34ba4d465c8

The explosive range of methane is 5% to 15% by volume in air. This means a vapor/air mixture of __________.

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed