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velikii [3]
3 years ago
15

Why is nitrogen fixation such an important step in the nitrogen cycle?

Chemistry
1 answer:
Valentin [98]3 years ago
7 0
The nitrogen fixation step is very necessary since it is allows nitrogen to be used by living organism. In this step nitrogen in the atmosphere is being converted into ammonia or other nitrogen compound that can be used by organisms. 
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Determine whether you can swim in 1.00 x 10^27 molecules of water.​
zloy xaker [14]

Answer:

We can not swim in 1.00 × 10²⁷ molecules of water

Explanation:

The given number of molecules of water = 1.00 × 10²⁷ molecules

The Avogadro's number, N_A, gives the number of molecules in one mole of a substance

N_A ≈ 6.0221409 × 10²³ molecules/mol

Therefore

Therefore, we have;

The number of moles of water present in 1.00 × 10²⁷ molecules, n = (The number of molecules of water) ÷ N_A

∴ n = (1.00 × 10²⁷ molecules)/(6.0221409 × 10²³ molecules/mol) = 1,660.53902857 moles

The mass of one mole of water = The molar mass of water = 18.01528 g/mol

The mass, 'm', of water in 1,660.53902857 moles of water is given as follows;

Mass = (The number of moles of the substance) × (The molar mass of the substance)

∴ The mass of the water in the given quantity of water, m = 1,660.53902857 moles × 18.01528 g/mol ≈ 29.9150756 kg.

The density pf water, ρ = 997 kg/m³

Volume = Mass/Density

∴ The volume of the water present in the given quantity of water, v = 29.9150756 kg/(997 kg/m³) ≈ 30.0050909 liters

The volume of the water present in 1.00 × 10²⁷ molecules of water ≈ 30.0 liters

The average volume of a human body = 62 liters

Therefore, we can not swim in the given quantity of 1.00 × 10²⁷ molecules = 30.0 liters water

7 0
3 years ago
What is the kinetic energy of the emitted electrons when cesium is exposed to UV rays of frequency 1.0×1015Hz?
Anvisha [2.4K]
In order to emit electrons, the cesium will have to absorb photons. Each photon will knock out one electron by transferring its energy to the electron. Therefore, by the principle of energy conservation, the energy of the removed electron will be equal to the energy of the incident photon. That energy is calculated using Planck's equation:

E = hf

E = 6.63 x 10⁻³⁴ * 1 x 10¹⁵
E =  6.63 x 10⁻¹⁹ Joules

The electron will have 6.63 x 10⁻¹⁹ Joules of kinetic energy
3 0
3 years ago
When balance the following chemical equations N2+O2= NO2 the coefficient for O2 is
Papessa [141]

Answer:

2

Explanation:

N₂ + O₂ --->  NO₂

balance

N₂ + 2O₂ ---> 2NO₂

4 0
2 years ago
If a bottle of olive oil contains 1.4 kg of olive oil, what is the volume, in milliliters ( mL ), of the olive oil?
Serhud [2]

We know that density of olive oil = 0.93 g/mL

Given that mass of olive oil = 1.4 kg or 1400 g because 1000 g = 1.0 kg

From the definition of density;

Volume = mass/ density

= 1400 g/ 0.93 g/mL

=1505 mL

7 0
3 years ago
Can friction apply to wooden blocks?
qaws [65]

Answer:

no

Explanation:

there is not room for atoms and no atoms = no energy ,no energy = no friction.i am sorry if you are confused

8 0
3 years ago
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