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3 years ago

List one reason as to why historical growth has slowed in recent years.

Chemistry

1 answer:

hodyreva [135]3 years ago

4 0

Lower fertility and longer lifespans steadily increased the potential labor force relative to the total population

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Why is the average atomic mass used when calculating grams of a substance?

galina1969 [7]

The average atomic mass includes all of the isotopes of that atom which exist in nature. Almost all elements have at least two isotopes which naturally occur.
Recall that isotopes are atoms with the same atomic number (protons), but a different number of neutrons. Since neutrons contribute the same amount of mass as a proton (1 amu), differing numbers of neutrons will change the mass of the atoms.

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4 0

3 years ago

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What do scientist measure by using a triple-beam balance

Leona [35]

A triple beam balance is used to measure the mass of objects.

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3 years ago

Determine the number of grams of carbon 3.14x 1023 atoms of carbon

tiny-mole [99]

<h3>Answer:</h3>

6.26 g C

<h3>General Formulas and Concepts:</h3>

Math

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Chemistry

Atomic Structure

Reading a Periodic Table
Moles
Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

Stoichiometry

Using Dimensional Analysis

<h3>Explanation:</h3>

Step 1: Define

[Given] 3.14 × 10²³ atoms C

[Solve] grams C

Step 2: Identify Conversions

Avogadro's Number

[PT] Molar Mass of C - 12.01 g/mol

Step 3: Convert

[DA] Set up: $\displaystyle 3.14 \cdot 10^{23} \ atoms \ C(\frac{1 \ mol \ C}{6.022 \cdot 10^{23} \ atoms \ C})(\frac{12.01 \ g \ C}{1 \ mol \ C})$
[DA] Multiply/Divide [Cancel out units]: $\displaystyle 6.26227 \ g \ C$

Step 4: Check

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

6.26227 g C ≈ 6.26 g C

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3 years ago

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What evidence from the experiment shows that conduction occurred? In your answer, be sure to include the materials involved in t

alisha [4.7K]

Answer:

uhh

Explanation:

Have no clue but I hope u get the question answered

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3 years ago

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What is the difference between potential and kinetic energy

erik [133]

Potential energy is the stored energy in an object due of its position or its configuration where as Kinetic energy is the energy which a body possesses because of its motion.

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3 years ago

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