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levacccp [35]
2 years ago
13

!! PLEASE NO COPY AND PASTE FROM THE INTERNET !! how are pulleys used in the real world

Chemistry
1 answer:
Alborosie2 years ago
6 0

Answer:

they use in industrial deliveries

Explanation:

Pulleys are important in pakikipagkalakalan

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Similarities between glacier and geyser
il63 [147K]
A glacier is a large persistent body of ice. A geyser is a spring characterized by intermittent discharge of water ejected turbulently and accompanied by water vapor  phase (steam). They both depend on water 
6 0
3 years ago
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If 28 grams of N reacts completely with 12 grams of H2, then how many
Bogdan [553]

Answer:

Mass of NH₃ produced = 34 g

Explanation:

Given data:

Mass of nitrogen = 28 g

Mass of Hydrogen = 12 g

Mass of NH₃ produced = ?

Solution:

Chemical equation:

N₂ +  3H₂    →   2NH₃

Moles of nitrogen:

Number of moles = mass/molar mass

Number of moles = 28 g/ 28 g/mol

Number of moles = 1 mol

Moles of hydrogen:

Number of moles = mass/molar mass

Number of moles = 12 g/ 2 g/mol

Number of moles = 6 mol

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

                            H₂              :               NH₃

                            3                :                2

                            6                :             2/3×6 = 4 mol

                           N₂              :                NH₃

                            1                :                 2

Number of moles of ammonia produced by nitrogen are less thus it will act as limiting reactant.

Mass of ammonia produced:

Mass = number of moles × molar mass

Mass =  2 mol  ×  17 g/mol

Mass = 34 g

                     

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One hundred million copper atoms are arranged in a line. which is a reasonable estimate for the length of this line?
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10^-8 cm/atom times 10^8 atoms = 1 cm
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1. What are the characteristics of a gas?
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B is your answer here.
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What is the cell membrane?
tankabanditka [31]

the semipermeable membrane surrounding the cytoplasm of a cell.

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