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Bumek [7]
3 years ago
6

Select the correct answer.

Chemistry
2 answers:
Annette [7]3 years ago
5 0

Answer:

C

Explanation:

Because it is the question that represents than carbon in the presence of oxygen give carbon dioxide.

kherson [118]3 years ago
4 0

Basically, carbon (C2) burns in the presence of adequate Oxygen (O2) to form carbon dioxide. Carbon is Quadro valent and is able to accept four more electrons. Oxygen has two electrons and hence, readily reacts with carbon to help break and make bonds. The chemical equation of carbon dioxide (CO2) is

carbon + oxygen → carbon dioxide or C2 + O2 = CO2

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Calcula la cantidad de gramos que hay en 12,5 mol de NaCl (Masa Na: 23,0; Cl: 35,5).
Anon25 [30]

Answer:

731.25 g

Explanation:

The question asks us to calculate the mass of 12.5 moles of NaCl. The individual relative atomic masses of the elements were supplied. We must first obtain the molar mass of sodium chloride as follows;

Molar mass of sodium chloride= 23.0 + 35.5 = 58.5 gmol-1

From the formula;

Number of moles (n) = mass /molar mass

Number of moles of sodium chloride= 12.5 moles

Mass of sodium = The unknown

Molar mass of sodium chloride= 58.5gmol-1

Mass of sodium chloride= number of moles × molar mass

Mass of sodium chloride= 12.5 × 58.5

Mass of sodium chloride= 731.25 g

4 0
3 years ago
Which of these oxides will likely form a colored solution when dissolved in water?
Alik [6]

Mn₂O

Explanation:

The oxide that will most likely form colored solutions is Mn₂O.

This is because most transition metals form colored compounds. Manganese is a transition metal belonging to the d-block on the periodic table.

  • Other examples of transition metals are scandium, titanium, iron, copper, cobalt, nickel, zinc
  • They belong to the d-block on the periodic table.
  • They have variable oxidation states.
  • Most of their solutions are always colored.

Learn more:

Periodic table brainly.com/question/8543126

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7 0
3 years ago
Describe two ways oil enters the environment.
soldier1979 [14.2K]

Answer:

In fact, there are actually several ways crude or refined oil may reach the marine environment. ... Use or consumption of oil (which includes operational discharges from ships and discharges from land-based sources): 37% Transportation (accidental spills from ships): 12% Extraction: 3% :))

3 0
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Which statement is true about the elements in the periodic table?
s2008m [1.1K]

Answer:

Statment 2

Explanation:

This is just an educated guess

4 0
2 years ago
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timurjin [86]

Answer:

Nitrogen

Explanation:

Nitrogen present 78% in the earth's atmosphere

5 0
3 years ago
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