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3 years ago

Why the atomic mass listed on the periodic table if 63.55?

Chemistry

1 answer:

Artist 52 [7]3 years ago

3 0

Answer:

If you are asking why the atomic mass on the periodic table only goes to the hundredth's place, it is because of significant figures. No number is exact, like it can be 63.5500001, and it will go to a certain point before it cease to matter in experiments.

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A bluebird lives in a maple tree. It builds a nest in the tree, where its eggs can be protected from the harsh environment. This

zysi [14]

Answer:

commensalism

(hope i spelled that right)

Explanation:

if the bird only nest in it and

the tree isn't really bothered or affected by the bird.

4 0

2 years ago

How many atoms are present in a sample of Potassium (K) weighing 33.49g?

madam [21]

Answer:

5.158 × 10²³ atoms K

General Formulas and Concepts:

Chemistry - Atomic Structure

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

Explanation:

Step 1: Define

33.49 g K

Step 2: Identify Conversions

Avogadro's Number

Molar Mass of K - 39.10 g/mol

Step 3: Convert

$33.49 \ g \ K(\frac{1 \ mol \ K}{39.10 \ g \ K} )(\frac{6.022 \cdot 10^{23} \ atoms \ K}{1 \ mol \ K} )$ = 5.15797 × 10²³ atoms K

Step 4: Check

We are given 4 sig figs. Follow sig figs and round.

5.15797 × 10²³ atoms K ≈ 5.158 × 10²³ atoms K

3 0

3 years ago

Why would fluorine, chlorine, and bromine be placed in the same group (the halogens) in the periodic table of elements? (1 point

inna [77]

D. They share chemical properties.

7 0

3 years ago

Type the correct answer in the box. Use numerals instead of words.

Murrr4er [49]

Answer:

The amount of energy transferred to the coin is 28.5 joules.

Explanation:

Have a great rest of your day
#TheWizzer

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2 years ago

Read 2 more answers

What energy is needed to make evaporation happen

Stella [2.4K]

Heat energy is needed for evaporation to happen.

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3 years ago