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3 years ago

Use the terms "radiation", "conduction", and "convection" to explain how a pot of water boils.

1 answer:

4 0

Materials that conduct heat poorly (wood, styrofoam) are often called insulators. However, materials that conduct heat well (metals, glass, some plastics) have no special name. The simplest conduction heat transfer can be described as “one-dimensional heat flow” as shown in the following figure.

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You just found a metallic object in a creek bed. You have found its mass to be 96.5 g, and it displaces 5 mL of water. What is t

LiRa [457]

I believe the substance would be gold.

8 0

4 years ago

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Used all my points please help with Lesson 13: Matter and Energy Unit Test

fredd [130]

Answer:

oceans rise and temputer in creses.

Explanation:

3 0

4 years ago

At what temperature does the solid start melting? –20°C 0°C 20°C 80°C

Gnesinka [82]

Answer:

0 °C

Explanation:

The melting point of a substance is the temperature at which it changes state from solid to liquid.

Different substance have different melting point.

The melting point of ice at 1 atmosphere of pressure is very to 0 °C this is also known as the ice point.

3 0

3 years ago

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When heated, KClO3 decomposes into KCl and O2. 2KClO3⟶2KCl+3O2 If this reaction produced 17.4 g KCl, how many grams of O2 were p

navik [9.2K]

Answer:

12.6 g O2 or

12.60 g O2 (if needed two decimal places)

Explanation:

First convert grams into moles:

17.4 g KCl × 1

74.55

= 0.233 moles of KCl

Next solve for the mole of O2:

= 0.233 × 3 moles of O2

2 moles of KCl

= 0.3495 or

= 0.350 moles of O2

Finally convert the mole to grams:

= 0.350 moles of O2 × 36g

1 mole

= 12.6 g O2 or 12.60 g O2

7 0

2 years ago

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If a substance cannot be seperated physically or chemically, it is ?

Dmitrij [34]

Then it is a pure substance, or an element.

4 0

3 years ago