The flammable limits of kerosene are 0.7% to...

Study

Question 1 of 205eccef9ebacbc34ba4d465a5

The flammable limits of kerosene are 0.7% to 6.0% by volume in air. The combustible gas indicator reading is 50% of the lower explosive level. The flammable vapor concentration at the sample point is __________.

Back

Question 1 of 20

5eccef9ebacbc34ba4d465a5

No comments yet

Be the first to share your thoughts!

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

🔍 Key Concepts

• Lower Explosive Limit (LEL) meaning and how gas indicators display readings • How to convert a percentage by volume into a fraction/decimal • Relationship between instrument reading as a percent of LEL and the actual vapor concentration in air

💭 Think About

• If the LEL is 0.7% by volume, what does 50% of that LEL represent as a percentage by volume? • Once you have that percentage by volume, how do you express it as a decimal (for comparison with choices B and C)? • Based on that concentration, is the mixture below LEL, between LEL and UEL, or above UEL?

✅ Before You Answer

• Be sure you understand that 50% of LEL is not 50% vapor in air, but 50% of 0.7%. • Confirm your unit conversion: percent (%) to a decimal fraction (e.g., 1% = 0.01). • Compare the resulting concentration to the given flammable range 0.7%–6.0% to decide if it is too lean, flammable, or too rich.

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

Quick actions

— No credit card needed