Why did Rutherford conclude that the atom was mostly empty space?

Answers

Answer 1

Answer: Rutherford came to this conclusion after his Gold-Foil experiment. He found that most of the alpha particales(when released) went straight through the gold foil, of which consisted of atoms. In the middle of the atom theres a small nucleus that has mass and positive charge. Because the nucleus is so small the alpha particles were able to go straight through leading to the conclusion that atoms are mostly empty space.

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As you go down the periodic table, the atomic radius of elements do what?

Answers

Atomic radii increase as you travel down the periodic table, due to increasing number of electron shells.

Increase. This is because more energy levels are available the lower you go in the table.

What type of slide did you make using the letter 'e' in the lab?

Answers

orienting the slide and using the objective lenses

Final answer:

The 'e' slide referred to in your lab is a basic training tool used in microscopy education. By creating and examining this slide, students learn how to properly operate a microscope.

Explanation:

In the provided lab scenario, the type of slide made using the letter 'e' likely refers to a common activity in microscopy training. The 'e' slide is not specific to any microorganisms or tissues, but rather, is often used for educational purposes to help students learn how to operate a microscope and focus on small, detailed objects. This type of slide is created by writing or printing the letter 'e' onto a clear glass slide, and then attempting to view it under the microscope, thereby learning how to adjust the focus and observe details.

Although the information about the Petroff-Hausser counting chamber and the Snap Lab was provided, that doesn't seem to be relevant here, as your lab focused specifically on making and using a slide with the letter 'e'.

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Why does sodium form a 1+ ion but magnesium forms a 2+ ion

Answers

because Na has one too many electron to be stable, while Mg has 2. once they loose those electrons, they will be come ion. loosing one electron will give the ion a 1+ charge, and loosing 2 will create a 2+ charge

What is the mass percent of sodium in NaCl?

Answers

The mass percent of sodium in NaCl can be determined by dividing the mass of sodium by the total mass of the compound (NaCl), then multiplying the result by 100. So, 39.34% of the mass of sodium in NaCl is composed of sodium.

The molecular weight of chlorine (Cl) is 35.45 g/mol while that of sodium (Na) is 22.99 g/mol.

The molecular weight of NaCl is calculated as follows:

Na: 1 atom * 22.99 g/mol = 22.99 g/mol
Cl: 1 atom * 35.45 g/mol = 35.45 g/mol

Total molecular weight = 22.99 g/mol + 35.45 g/mol = 58.44 g/mol

To determine the sodium mass percent in NaCl:

(mass of sodium / total mass of NaCl) * 100 to get the mass percent of sodium.

(22.99 g/mol / 58.44 g/mol) x 100 = 39.34% sodium mass percent

As a result, 39.34% of the mass of sodium in NaCl is composed of sodium.

Learn more about Mass percent, here:

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mass percent of sodium is mass of sodium divided by total mass of NaCl then multiplied by 100%. That means that percent mass equals (23g/58.45g)×100% which equals 39.3%.
Therefore the percent mass of sodium in NaCl is 39.3%
I hope this helps. Let me know if anything is unclear.

Atoms of Ca and S would be expected to react in a ratio ofA) 1:1
B) 1:2
C)2:1
D)3:1