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Anestetic [448]
3 years ago
14

Which is a correct comparison between the modern quantum model and John Dalton’s model of the atom?

Chemistry
1 answer:
REY [17]3 years ago
7 0

Answer:

Explanation:

The modern model recognizes particles in the atom, whereas Dalton's model does not.

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Sulfur has an electronegativity of 2.58, while Cesium has a value of 0.79. Based on this information, they would have what kind
Veronika [31]

Answer:

Ionic

Explanation:

Because sulphur is a non-metal and cesium is part of the group 1 Alkali Metals, this creates an ionic bond

Ionic bonds are created from one metal and one non-metal element.

This still is declared as Ionic despite the balance of this is Cs2S

3 0
3 years ago
Select all of the statements that correctly describe DNA structure:
GalinKa [24]

Answer:

  1. Hydrogen bonds will hold two DNA strands together.
  2. The sugars and phosphate groups are located on the exterior of the helix.
  3. Base pairing will always be between a purine base and a pyrimidine base.

<em>I hope this helps you</em>

<em>:)</em>

3 0
2 years ago
What part of a microscope supports the weight of the microscope
Leno4ka [110]

firm support that bears weight of microscope = base

3 0
3 years ago
Read 2 more answers
Which of the following is a unit of mass? A) A meter B) A liter C) a kelvin D) a kilogram ​
lora16 [44]

A kilogram is a unit of mass. A meter is a unit of measurement, a Liter is volume and a kelvin is temperature

6 0
3 years ago
Read 2 more answers
2. Iron reacts with superheated steam to form hydrogen gas and the oxide Fe3O4. Calculate the number of moles of hydrogen produc
vekshin1

Answer:

A 0.239mol

Explanation:

From the equation:

We were given that 10g of iron was involved in this chemical reaction

We can establish that :

3moles of Fe would produced 4 moles of Hydrogen gas

Therefore:

Number of moles of iron = mass of Fe / mloar mass of iron

Mass of Fe = 10g

Molar Mass of Fe = 55.85g/mol

Therefore, number of moles of iron= 10/55.85

Number of moles of iron = 0.179mol

3moles of Fe would produced 4 moles of Hydrogen gas

So, 0.179mol of Fe would give 0.179x4/3

The number of mole of Hydrogen gas produced is 0.239mol.

3 0
3 years ago
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