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3 years ago

Based in the rules of John Dalton, what is a possible hypothesis that could be tested in the Atomic Theory lab?

2 answers:

8 0

<span>After many experiments and many different approaches to the question, the scientist may be able to develop a theory. The theory explains why nature behaves in the way described by the natural law. It answers not only the original question, but also any other questions that were raised during the process. The theory also predicts the results of further experiments, which is how it is checked. Theories are not the end of the process.</span>

Schach [20]3 years ago

4 0

Answer:

Dalton's atomic model can be used to explaing the mass concervation withing an chemical reaction.

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3 years ago

2. What is the mass of 5.3 moles of CaCl2?

Tanya [424]

Answer:

590 g CaCl₂

General Formulas and Concepts:

<u>Chemistry - Atomic Structure</u>

Reading a Periodic Table
Using Dimensional Analysis

Explanation:

<u>Step 1: Define</u>

5.3 mol CaCl₂

<u>Step 2: Identify Conversions</u>

Molar Mass of Ca - 40.08 g/mol

Molar Mass of Cl - 35.45 g/mol

Molar Mass of CaCl₂ - 40.08 + 2(35.45) = 110.98 g/mol

<u>Step 3: Convert</u>

<u /> $5.3 \ mol \ CaCl_2(\frac{110.98 \ g \ CaCl_2}{1 \ mol \ CaCl_2} )$ = 588.194 g CaCl₂

<u>Step 4: Check</u>

<em>We are given 2 sig figs. Follow sig fig rules and round.</em>

588.194 g CaCl₂ ≈ 590 g CaCl₂

5 0

3 years ago

7.60 moles of magnesium perchlorate 3 significant figures

katen-ka-za [31]

The number of moles of Mg, Cl, and O atoms is 7.60 moles of magnesium perchlorate 7.60, 15.2, and 60.8 moles respectively.

Mole is a standard scientific unit that is used to measure large quantities of small things such as atoms, molecules, atoms, etc. A mole is the amount of a substance that contains 6.023× 10²³ particles of a substance.

The number 6.023× 10²³ is also known as the Avogadro number and is designated by the symbol $N_A$ .

The total number of atoms in every molecule of magnesium perchlorate needs to calculate. The chemical formula of the magnesium perchlorate is Mg(ClO₄)₂.

Therefore the number of atoms of magnesium, chlorine, and oxygen are 1, 2, and 8 respectively. Then, the number of moles of Mg, Cl, and O in 7.60 moles of magnesium perchlorate will be equal to :

Number of moles of Mg = 1 × 7.60 moles = 7.60 mol

Number of moles of Mg = 2 × 7.60 moles = 15.2 mol

Number of moles of Mg = 8 × 7.60 moles = 60.8 mol

Therefore, the number of moles of Mg, Cl, and O in 7.60 moles of Mg(ClO₄)₂ is 7.60, 15.2, and 60.8 moles respectively.

Learn more about the mole concept, here:

brainly.com/question/22540912

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Your question is incomplete, but most probably your full question was,

Calculate the number of moles of magnesium, chlorine, and oxygen atoms in 2.60 moles of magnesium perchlorate, mg(clo4)2. express the number of moles of Mg, Cl, and O atoms numerically, separated by commas.

6 0

1 year ago