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Natasha2012 [34]
3 years ago
8

I NEED HELP. This is about science

Chemistry
1 answer:
Vilka [71]3 years ago
5 0

Answer:

Independent variable

Explanation:

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In a particular experiment at 300 ∘C, [NO2] drops from 0.0100 to 0.00800 M in 100 s. The rate of appearance of O2 for this perio
Tems11 [23]

Answer:

1\times{10}^{-5}\frac{M}{s}

Explanation:

The stoichiometry for this reaction is  

2NO_2\rightarrow2NO+O_2

The rate for this reaction can be written as  

-r_{NO_2}=-\frac{d\left[NO_2\right]}{dt}=\frac{(0.01-0.008)M}{100s}=2\times{10}^{-5}\frac{M}{s}

This rate of disappearence of NO_2 can be realated to the rate of appearence of O_2 as follows  (the coefficients of each compound are defined by the stoichiometry of the reaction)

-r_{O_2}=-r_{NO_2}\times\frac{coefficient\ O_2\ }{coefficient\ NO_2}=2\times{10}^{-5}\frac{M}{s}\times\frac{1\ mole\ O_2\ }{2\ mole\ NO_2}=1\times{10}^{-5}\frac{M}{s}

6 0
4 years ago
How much heat is required to convert 90. g of ice at -4.0 C to water vapor (steam) at 110 C
lakkis [162]

Answer:  How much heat is required to convert 29 g of ice at -4.0 ˚C to water vapor at 105 ˚C (report your answer to three significant figures)? Answer all five parts, showing your detailed calculations: i) Heat to warm ice from -4.0 to 0 oC: ii) Heat to convert ice to liquid: iii) Heat to warm liquid to boiling: iv) Heat to convert liquid to gas

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Explanation:

e

6 0
3 years ago
ANSWER ASAP! PLEASE!!!!!
Rina8888 [55]
C. Also just look up a chemical equation balancer calculator next time.
6 0
2 years ago
When salt water is heated leaving behind solid salt, this is separating a mixture by what method?
KatRina [158]

Answer:

option B is correct answer of this question

it is. Evaporation

5 0
3 years ago
Read 2 more answers
Explain how to draw the electron-dot diagram for oxygen.
AlexFokin [52]

The electron dot diagram for the oxygen atom shows six electrons around the symbol of the atom.

<h3>What is the electron dot diagram?</h3>

The electron dot diagram is the diagram of atoms of elements showing only the valence electrons present in the atom represented with dots.

The electron dot diagram for the oxygen atom is drawn as follows:

  • The number of valence electrons in oxygen atom is determined; valence electrons = 6
  • The symbol for the oxygen atom is written
  • The valence electrons are shown as dots around the symbol of the element.

In conclusion, the electron dot diagram uses dots around the symbol of an atom to show the valence electrons in the atom.

Learn more about electron dot diagram at: brainly.com/question/5835591

#SPJ1

7 0
1 year ago
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