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icang [17]
3 years ago
9

Which two subatomic particles have the greatest mass?

Chemistry
1 answer:
denpristay [2]3 years ago
6 0

Answer:

PROTON AND NEUTRON

Explanation:

  • The mass of proton is : 1.67*10^{-27}kg

A proton is one of the main particles that make up the atom . The other two particles are neutron and electron. Protons are found in the nucleus of the atom.This is a tiny , dense region at the centre of the atom. Protons have a positive charge of one (+1) and a mass of 1 atomic mass unit ( amu ) , which is about 1.67*10^{-27}kg. Together with neutrons , they make up virtually all of the mass of an atom.

  • The  mass of neutron is also approximately: 1.67*10^{-27}kg but a little more than that .

Atoms of all elements - except Hydrogen , have neutrons in their nucleus . Unlike protons and electrons , these have no charge - they are electrically neutral . The mass of a neutron is slightly greater than the mass of a proton but not very significant

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B. Solvent

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Which is a characteristic of a homogeneous mixture that is a liquid?
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Water will move from a ____________ salt solution to a ____________ salt solution when they are across a differentially permeabl
const2013 [10]
The answers are low concentrated (dilute) and high concentrated respectively. 

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6 0
3 years ago
In the Haber process, 30.00 g of nitrogen gas is combined with 30.00 g of hydrogen gas to form ammonia gas, NH3. What mass, in g
noname [10]

Answer:

Mass = 36.38 g

Explanation:

Given data:

Mass of hydrogen = 30.0 g

Mass of nitrogen = 30.0 g

Theoretical yield of reaction = ?

Mass of ammonia = ?

Chemical equation:

N₂+ 3H₂  → 2NH₃

Number of moles of N₂:

Number of moles  = Mass /molar mass

Number of moles = 30 g / 28 g/mol

Number of moles = 1.07 mol

Number of moles of H₂:

Number of moles = Mass /molar mass

Number of moles = 30 g / 2g/mol

Number of moles = 15 mol

Now we will compare the moles of NH₃ with hydrogen and nitrogen .

                 H₂             :                 NH₃

                 3               :                 2

                15              :                2/3×15= 10 mol

                 N₂             :                 NH₃

                 1                :                  2

               1.07             :               2 × 1.07= 2.14 mol

The number of moles of NH₃ produced by nitrogen are less it will be limiting reactant.

Mass of ammonia:

Mass of NH₃  = moles × molar mass

Mass =2.14 mol × 17 g/mol

Mass = 36.38 g

7 0
3 years ago
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