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Effectus [21]
3 years ago
7

We inhale o2 and we exhale co2. carbon dioxide is produced _____.

Chemistry
1 answer:
Natali [406]3 years ago
3 0
There are both natural and human sources of carbon dioxide emissions. Natural sources include decomposition, ocean release and respiration. Human sources come from activities like cement production, deforestation as well as the burning of fossil fuels like coal, oil and natural gas.
You might be interested in
What is the most likely source of the carbon dioxide shown in the graph above?
castortr0y [4]

Combustion of fossil fuels

Explanation:

The most likely source of the carbon dioxide shown in the graph is the combustion of fossil fuels for both industrial and domestic use.

  • Fossil fuels are hydrocarbon units.
  • They burn in the presence of oxygen gas to from carbon dioxide and water.
  • The level of carbon dioxide has been increasing dramatically with increase in industrialization.
  • The fuels are used and needed for the workings of machinery.
  • Domestically they are used in heating homes and powering automobiles.
  • These processes produce carbon dioxide as a waste product.

learn more:

Green house gas emission brainly.com/question/4580761

#learnwithBrainly

7 0
3 years ago
1. For CCl4, upload a photo including the following: (1) work arriving at total # valence electrons
forsale [732]

Work arriving at total valence electrons are 24

The valence electron is an electron in the outer shell associated with an atom, and that can participate in the formation of a chemical bond

For a main-group element, a valence electron can exist only in the outermost electron shell; for a transition metal, a valence electron can also be in an inner shell.

Lewis structures, also known as Lewis dot formulas, Lewis dot structures, electron dot structures, or Lewis electron dot structures (LEDS), are diagrams that show the bonding between atoms of a molecule, as well as the lone pairs of electrons that may exist in the molecule.

Calculating the work arrival at total valence electrons

We know 1 bond contains

2 valence electrons

Here CCl4 contains 4 bonds that is 8 valence electrons

Therefore ,

Total valence electrons are 32

Now valence electrons remain after bond formation =

32 - 8

=24 valence electrons

A molecular model is a physical model of an atomistic system that represents molecules and their processes

Molecular image and lewis hand drawn structure is as shown below

Learn more about lewis structure here

brainly.com/question/6224949

#SPJ10

3 0
1 year ago
Which statement is correct about the rate of most chemical reactions? It increases when the concentration of reactants decreases
stiv31 [10]

Answer:

It increases when the temperature increases.

Explanation:

  • According to Arrhenius relation: k = Ae(-Ea/RT).
  • The rate constant of the reaction and also the rate of the reaction increases exponentially with increasing the temperature of the reaction.
  • As the temperature increases, the no. of molecules that can posses the critical energy (activation energy) to initiate the chemical reaction and pass the energy barrier increases.
7 0
3 years ago
Describe how each way to separate a mixture works Magnetic attraction: Evaporation: Filtration: Distillation:
jeka94

Answer:

Evaporation is great for separating a mixture (solution) of a soluble solid and a solvent. The process involves heating the solution until the solvent evaporates (turns into gas) leaving behind the solid residue. ... This method is best for separating a liquid from a solution.

Filtration is a method for separating an insoluble solid from a liquid. When a mixture of sand and water is filtered: the sand stays behind in the filter paper (it becomes the residue ) the water passes through the filter paper (it becomes the filtrate )

Magnetic separation is the process of separating components of mixtures by using magnets to attract magnetic materials. ... Due to the magnets, magnetic particles are being drifted by the movement of the drums. This can create a magnetic concentrate (e.g. an ore concentrate).

Explanation:

That's your answer.

5 0
3 years ago
How many significant figures are in 1.2 x 10^5
OLEGan [10]

Answer:

2

Explanation:

The 1 & 2 are both signifigant becuase they are presented in scientific notation.

3 0
3 years ago
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