It is called convection. When warm air, or current, moves up and disperse outwards as cold air, or current, moves into the warmer region.
Answer:
<u>2.26 </u>
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Explanation:
First you should know what are significant figures,
1 . All non - zero digits are significant.
2 . The zero between two non- zero are significant.Ex 302 has 3 significant figures.
3. The zero before the decimal and before any non-zero digit is non significant. Example : 0.003 has only 1 significant figure.
4. The zero after non zero are non - significant . But the zeros after the decimal point are significant.
300 has only 1 significant figure
300.0 has 4 significant figure
The least number of significant figures present in the number should be there in the final answer of the calculation.
Look at the number having minimum significant digits :
It is 3 (every number has 3- significant figures ) So the answer should also contain 3 - significant figures.
First solve the numerator part
Round off this number to 3 significant figures.
Answer is =<u> 2.26</u>
It has 3 - significant digit since all the digits are non-zero.
Answer:
Hi
One of the most famous works George Orwell shows us in 1984 a society that is controlled by the Superstate, in such a way that the inhabitants cannot do or say anything without The Big Brother finding out. If anyone tries to oppose this system, it is vaporized and in less than three days society forgets that there was a person who conspired or worse, that existed.
The detentions happened at night. He woke up startled because one hand shook one shoulder, a flashlight focused on him and a circle of grim faces appeared around the bed. In most cases there was no process. People disappeared and always during the night. The name of the individual in question disappeared from all the records, any reference to what he had done was erased from everywhere and his passage through life was completely annulled as if he had never existed.
Explanation:
The balanced equation for the above reaction is as follows;
2H₂ + O₂ --> 2H₂O
stoichiometry of O₂ to H₂O is 1:2
number of O₂ moles reacted - 40.3 g / 32 g/mol = 1.26 mol
according to molar ratio
number of water moles produced = 2 x number of O₂ moles reacted
number of water moles formed - 1.26 x 2 = 2.52 mol
mass of water produced = 2.52 mol x 18 g/mol = 45.4 g
45.4 g of water produced
