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Andre45 [30]
2 years ago
7

What particles form the nucleus of an atoms?

Chemistry
1 answer:
melomori [17]2 years ago
7 0

Answer:

Protons and neutrons

Explanation:

The particles to forms the nucleus of an atom are the protons and neutrons of the atoms.

These materials are located in the tiny nucleus and contributes the most mass of the atom.

  • Protons are the positively charged particles in an atom
  • Neutrons do not carry any charges.
  • Sum of the protons and neutrons gives the mass number of the atom.
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True or false. for all atoms of the same element the 4s orbital is larger than the 3s orbital
Alenkinab [10]

Answer:

Between 4s and 3s orbital , 3s has more energy .

Explanation:

According to the rule , the lower the value of (n+l) for an orbital , the lower is it's energy . And if two orbitals have the same value of (n+l), the orbital with lower value of n will have the lower energy .

6 0
3 years ago
Water (2110 g ) is heated until it just begins to boil. if the water absorbs 551000. j of heat in the process, what was the init
Sunny_sXe [5.5K]
Answer:
42.9
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Explanation:
The idea here is that the problem is providing you with the amount of heat needed to raise the temperature of a given sample of water from an initial temperature to its boiling point, i.e. to 100
8 0
3 years ago
If a molecule diffusing through extracellular fluid travels 1 mm in 1 sec, how long will it take that molecule to diffuse 1 cm
hichkok12 [17]
Given that the rate of diffusion is 1 mm per 1 second. then the time it travels in 1 cm can be solve using the formula
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4 0
3 years ago
2. Calculate the mass of 5.35 mole of H2O2.
Dmitry_Shevchenko [17]

Answer:

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Explanation:

6 0
2 years ago
How many grams of oxygen gas must react to give 2.10g of ZnO?
Advocard [28]
The chemical reaction is written as:

2Zn + O2 = 2ZnO

We are given the amount of the product to be produced from the reaction. We use this value and the relation of the substances in the reaction to calculate what is asked. We do as follows:

2.10 g ZnO ( 1 mol / 81.408 g ) ( 1  mol O2 / 2 mol ZnO ) ( 32 g / 1 mol ) = 0.414 g O2 is needed
8 0
3 years ago
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