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3 years ago

A _____ fireplace continues to radiate heat even after the fire is extinguished.

Chemistry

2 answers:

umka2103 [35]3 years ago

8 0

A Masonry fireplace continues to radiate heat even after the fir is extinguished.

andrey2020 [161]3 years ago

4 0

Answer:

The correct answer is Masonry.

Explanation:

Chimneys are built with masonry, materials such as bricks, cement blocks, natural stone or a combination of these.

The materials keep the smoke and hot gases rotating inside the chimney for longer, causing the material to absorb more heat. This means that after the fire is extinguished, the materials will continue to radiate heat to the environment.

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3 years ago

Which cannot be chemically broken down into simpler substances?

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26 Milkweed contains a poison known as cardenolides. Monarch butterflies eat the milkweed plant and hold on to this toxic compou

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Cardenolides, with the chemical formula CH₁₈C₂₀H₁₅CHCO₂ have (D) 23 carbon atoms, 34 hydrogen atoms, and 2 oxygen atoms.

Milkweed contains a poison known as cardenolides. The chemical formula for cardenolides CH₁₈C₂₀H₁₅CHCO₂.

The subscripts in the formula represent the atomicities, that is the number of atoms of each element in each part of the formula.

We can calculate the total number of atoms of each element by adding its atomicities.

<h3>Carbon atoms</h3>

$C = 1 + 20 + 1 + 1 = 23$

<h3>Hydrogen atoms</h3>

$H = 18 + 15 + 1 = 34$

<h3>Oxygen atoms</h3>

$O = 2$

Cardenolides, with the chemical formula CH₁₈C₂₀H₁₅CHCO₂ have (D) 23 carbon atoms, 34 hydrogen atoms, and 2 oxygen atoms

Learn more: brainly.com/question/13348838

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3 years ago

Which molecules are used to produce energy

marissa [1.9K]

Answer:

Explanation:

fats, proteins, and carbohydrates

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3 years ago

10. Which of the following mirror is used to form smaller image

vitfil [10]

Answer:

Correct answer is b) convex mirror

Explanation:

A convex mirror, which bulges outward, reflects at a wider angle near its edges than at its center, creating a slightly distorted image that's smaller than actual size. Convex mirrors have many uses. The smaller size of the images means that you can see more with these surfaces, hence their use in safety mirrors.

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