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3 years ago

Which is a fossil fuel? A.nuclear B.Biomass C.geothermal D.coal

Chemistry

2 answers:

Nat2105 [25]3 years ago

8 0

Answer:

Coal

Explanation:

Coal is composed of the remains of dead animals and plants, being pressed down over the course of thousands of years.

(Also can I please have Brainliest? I need it to level up)

Ivahew [28]3 years ago

4 0

Answer:

coal

Explanation:

a fossil fuel is a general term for buried combustible geologic deposits of organic materials formed from decayed plants and animals. hope this helps i took physical science.

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What is the volume of 40.0 grams of argon gas at STP ?

MrRa [10]

Answer:

24.9 L Ar

General Formulas and Concepts:

Atomic Structure

Reading a Periodic Table
Moles
STP (Standard Conditions for Temperature and Pressure) = 22.4 L per mole at 1 atm, 273 K

Aqueous Solutions

States of Matter

Stoichiometry

Using Dimensional Analysis

Explanation:

Step 1: Define

[Given] 40.0 g Ar

[Solve] L Ar

Step 2: Identify Conversions

[PT] Molar Mass of Ar - 39.95 g/mol

[STP] 22.4 L = 1 mol

Step 3: Convert

[DA] Set up: $\displaystyle 40.0 \ g \ Ar(\frac{1 \ mol \ Ar}{39.95 \ g \ Ar})(\frac{22.4 \ L \ Ar}{1 \ mol \ Ar})$
[DA] Divide/Multiply [Cancel out units]: $\displaystyle 24.9235 \ L \ Ar$

Step 4: Check

Follow sig fig rules and round. We are given 3 sig figs.

24.9235 L Ar ≈ 24.9 L Ar

5 0

3 years ago

5. A gas occupies a volume of 100.0 mL at 27.0°C and 630.0 torr. At what temperature, in degrees

DanielleElmas [232]

100 by 500 ml so if you put 50 ml in 630torr it would evaporate

Explanation:

it is more than ¹00 celcwius so it would eveporate

8 0

3 years ago

Mountains and valleys are some of the features found in the layer of rock at Earth's surface called the

loris [4]

Answer:

Narrow

Explanation:

Narrow

5 0

3 years ago

Match these items

masha68 [24]

The correct matches are as follows:

1.instantaneous combustion
G.burning

2.mass of substances before and after a reaction is the same
C.Law of Conservation of Matter

3.substances that combine
A.reactants

4. Yields or makes
B.arrow symbol

5.rapid oxidation
F.explosion

6.new substance
D.product

7.slow oxidation
E.rust

Hope this answers the question. Have a nice day.

4 0

3 years ago

Read 2 more answers

Describe the theory of ionization in regard to acids and bases

dmitriy555 [2]

Acids are substances which produce hydrogen ions in solution.Bases are substances which produce hydroxide ions in solution.

7 0

3 years ago

Read 2 more answers