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Naya [18.7K]
3 years ago
11

The statements in the table summarize what Johannes Kepler stated in the early 1600s about the motion of planets.

Chemistry
2 answers:
Alisiya [41]3 years ago
6 0

C.) the answer is laws

Murrr4er [49]3 years ago
3 0
<h2>Answer : Option C) Laws</h2><h3>Explanation : </h3>

The statements in this table has summarized the Johannes Kepler law's about the motion of planets. Over the last four hundred years, these predictions of laws have proven to be true.

A law is generalized rule which explains a body of observations in the form of a verbal or mathematical statement.

Similarly, scientific laws which are also known as natural laws are considered to be laws because they imply a cause and effect between the observed elements and is observed to the same conditions always.

This proved to be true for the statements made by Kepler. Hence, this can be classified as laws.

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Calculate the number of sulfate ions in 41.65 g of aluminum sulfate.
scoray [572]

The number of sulfate ions : 2.2 x 10²³

<h3>Further explanation</h3>

Reaction

Al₂(SO₄)₃⇒2Al³⁺+3SO₄²⁻

mol Al₂(SO₄)₃(MW=342,15 g/mol) :

\tt \dfrac{41.65}{342.15}=0.122

mol of sulfate ions (SO₄²⁻)

\tt 3\times 0.122=0.366

1 mol = 6.02 x 10²³ particles (ions, molecules, atoms), so for 0.366 mol :

\tt 0.366\times 6.02\times 10^{23}=2.20\times 10^{23}

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3 years ago
How many decigrams are in 4.6 decagrams?
11111nata11111 [884]

Answer:

\large \boxed{\text{460 dg}}

Explanation:

1. Convert decagrams to grams

\text{Mass} =  \text{4.6 dag} \times\dfrac{\text{10 g}}{\text{1 dag}} = \text{46 g}

2. Convert grams to decigrams

\\text{Mass} =  \text{46 g} \times\dfrac{\text{10 g}}{\text{1 dg}} = \text{460 dg}\\\\\large \boxed{\textbf{4.6 dag = 460 dg}}

3 0
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What evidence reaction will be observed based on this chemical reaction​
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Answer:

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