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3 years ago

11

Determine whether each statement is a description of a physical property or a chemical property. Please check the box that appli

es.
Copper conducts heat well.

physical

chemical
Alcohol has a sweet odor.

physical

chemica

1 answer:

aleksklad [387]3 years ago

7 0

Conductivity is a physical property

Odor is also a physical property

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The first law of thermodynamics states that ΔE=Q-W. How is this also a statement of the principle of conservation of energy?

yaroslaw [1]

Hello I took this test just now and got 100% your correct answer would be C. Hope this helps.

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3 years ago

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Can you describe the situations when Greek prefixes are used?

Black_prince [1.1K]

Answer:

Here's what I get

Explanation:

At the introductory level of chemistry, I can think of only two situations when you use Greek prefixes.

They indicate the number of atoms or groups in a molecule when you are naming a compound.

1. Binary covalent compounds

For example, P₂S₅ is diphosphorus pentasulfide.

2. Hydrates

For example, Na₂SO₄·10H₂O is sodium sulfate decahydrate.

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3 years ago

If a can of soup 150 g mass and 0.75g/ cm^3 density what’s the volume

Liula [17]

Answer:

<h3>The answer is 200 cm³</h3>

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

$volume = \frac{mass}{density}\\$

From the question

mass = 150 g

density = 0.75 g/cm³

We have

$volume = \frac{150}{0.75} \\$

We have the final answer as

<h3>200 cm³</h3>

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3 years ago

2. What is the volume of 40.0 g of N2 at STP?

vampirchik [111]

Answer:

Molar mass of

N

2

=

28 g/mol

Moles of

40.5 g N

2

gas

=

40.5 g

28 g/mol

=

1.45 mol

1 mol

of any gas at

STP

occupies

22.4 L

of volume.

1.45 mol

of

N

2

gas will occupy

1.45

mol

×

22.4 L

1

mol

=

32.48 L

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2 years ago

What does Mg stand for in chemistry

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Mg is an element that stands for Magnesium.

Mg is the chemical symbol for Magnesium.

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