Answer:
Given the activity series of elements, the reaction that will occur is: 2AgNO3 + Ni -----> Ni(NO3)2 + 2Ag
It's sunny in new york, but it is cool, we will expect to find lizard under a rock or in a hole in the ground.
<h3>Why lizards are not comfortable in cold?</h3>
Lizards are not comfortable in the cold season as they are cold blooded animal, so their body will gets slow in the winter season.
During the winter season or in the cool weather, lizards will go to the places where they faces less cooling. And these places be like inside the rocks, under a hole, under the ground, in the trunks of trees, etc.
Hence, options (1) and (4) are correct.
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<u>Answer:</u> The mass of the nitrous oxide gas produced is 0.011 kg.
<u>Explanation:</u>
To calculate the mass of the gas, we use the formula:
We are given:
Specific density of the gas =
Mass of the gas = ? kg
Volume of the gas = (Conversion Factor: )
Putting values in above equation, we get:
Hence, the mass of the nitrous oxide gas produced is 0.011 kg.
1) The mass of 1 mole of virus is
2) There are 5.6 moles of viruses in an oil tanker
Explanation:
1)
One mole of a substance is the amount of that substance containing a number of particles equal to the Avogadro number:
This means that 1 mole of this virus should contain a number of virus particles equal to .
We know that the mass of 1 virus particle is
Therefore, the mass of 1 moles of viruses is equal to the mass of a single virus particle multiplied by the number of virus particles in one mole, :
2)
In this problem, we have that the mass of the oil tanker is
We also know that the mass of one mole of virus is
Therefore, we can find how many moles of viruses have a mass equal to the mass of the oil tanker by dividing the mass of the oil tanker by the mass of 1 mole of virus particles.
Mathematically, this is done by the following operation:
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