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forsale [732]
3 years ago
7

AT LEAST 15 POINTS ON CHEMISTRY PLS HELP

Chemistry
2 answers:
NemiM [27]3 years ago
4 0
If I remember correctly that is a double replacement

marshall27 [118]3 years ago
4 0

Answer:

Definetely a double replacement

Explanation:

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Which model demonstrates a correct pathway carbon takes in the carbon cycle?
weqwewe [10]

Answer:

C) atmosphere → plants → animals → soil

Explanation:

The third choice provides the correct path through which carbon is cycled in nature.

Carbon passes from the atmosphere to plants then to animals and finally to the soil.

  • Plants uses carbon dioxide from the atmosphere to manufacture their food.
  • The food is made up of giant carbon chains which also provides nourishment for animals.
  • When animals digest plant matter, they obtain energy for their process.
  • The waste is passed into the soil .
8 0
3 years ago
Question 3 of 6
Bond [772]

Answer:

c,d,e

Explanation:

3 0
3 years ago
What mass of nitrogen monoxide is formed in the reaction of 869kg ammonia and 2480kg oxygen gas? (Please show work)
USPshnik [31]

Answer:

1533.6 kg NO

Explanation:

The reaction that takes place is:

  • 4NH₃ + 5O₂ → 4NO + 6H₂O

First we <u>convert the masses of ammonia (NH₃) and oxygen gas (O₂) into moles</u>, using<em> their respective molar masses</em>:

  • NH₃ ⇒ 869 kg ÷ 17 kg/kmol = 51.12 kmol NH₃
  • O₂ ⇒ 2480 kg ÷ 32 kg/kmol = 77.5 kmol O₂

77.5 kmol of O₂ would react completely with (77.5 kmol O₂ * \frac{4kmolNH_3}{5kmolO_2}) 62 kmol of NH₃. There are not as many kmol of NH₃, so NH₃ is the limiting reactant.

Now we <u>calculate how many kmol of NO are produced</u>, using the <em>limiting reactant moles</em>:

  • 51.12 kmol NH₃ * \frac{4kmolNO}{4kmolNH_3} = 51.12 kmol NO

Finally we <u>convert kmol of NO to mass</u>, using its<em> molar mass</em>:

  • 51.12 kmol NO * 30 kg/kmol = 1533.6 kg NO
6 0
2 years ago
What is the electronegativity difference<br> between sodium and chlorine?
Temka [501]

Answer: 2.23 is the difference.

Explanation: Sodium has an electronegativity of 0.93 and Chlorine has an electronegativity of 3.16, so when Sodium and Chlorine form an ionic bond, in which the chlorine takes an electron away from sodium, forming the sodium cation, Na+, and the chloride anion, Cl-.

5 0
3 years ago
Help me pls someone plss???
Sliva [168]

c) water vapor is less dense

6 0
2 years ago
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