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Alina [70]
4 years ago
10

BRAINLIESTTT ASAP!! PLEASE HELP ME ASAP!

Chemistry
1 answer:
Artyom0805 [142]4 years ago
7 0

Answer:

Here's what I get.

Explanation:

There are many ways of classifying a reaction. Here are some that can apply to yours.

A. Combination or synthesis

Two or more elements combine to form a single compound.

B. Redox or reduction/oxidation

One element is oxidized, and another is reduced.

For example, the oxidation number of N is reduced from 0 to -3, and that of H is increased from 0 to +1.

C. Gas phase reaction

All reactants and products are gases (although the reaction is extremely slow without a solid catalyst).

D. Homogeneous

All substances are in the same phase (if you aren’t using a solid catalyst).

The main types of reaction are

  • Combination
  • Decomposition
  • Single displacement
  • Double displacement
  • Combustion
  • Redox
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In the periodic table below, shade all the elements for which the neutral atom has a valence electron configuration of ns2np3 ,
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Answer is: chemical elements<span> in </span>group 15<span> of the </span>periodic table have <span>neutral atom with a valence electron configuration of ns</span>²<span>np</span>³<span>.
</span>Nitrogen: [He] 2s² 2p³.
Phosphorus: [Ne] 3s² 3p³.
Arsenic: <span>[Ar] 3d</span>¹⁰ 4s² 4p³.
Bismuth: <span>[Xe] 4f</span>¹⁴ 5d¹⁰ 6s² 6p³.
Moscovium: predicted [Rn] 5f¹⁴<span> 6d</span>¹⁰<span> 7s</span>² 7p³.
These elements have 5 valence electrons.

5 0
4 years ago
Which element was first discovered on the sun? hydrogen carbon oxygen helium
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The element first discovered in the sun is the element Helium. This noble gas is the second most abundant element<span> in the universe and was </span>discovered<span> on the </span>sun<span> before it was discovered on the earth. Helium is the result of the nuclear fusion of hydrogen creating thus the mass of energy in the sun.</span>
3 0
4 years ago
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What is the formula for the compound?
4vir4ik [10]

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Which statement describes why sodium reacts more vigorously than magnesium to hydrochloric acid? Refer to the periodic table. Ci
lions [1.4K]

Sodium has a lower ionization energy than magnesium describes why sodium reacts vigorously than magnesium chloride.

<h3>Why is sodium more reactive than magnesium?</h3>
  • Sodium is more reactive than magnesium because it has the ability to easily lose electron, hence have lower ionization energy.
  • Sodium belong to group one on the periodic table and they are called akali metal while magnesium belong to group two on the periodic table and they are called alkali Earth metal.

  • Sodium and magnesium belong to the in the 3rd period. Iin the outermost energy level sodium has one electron but magnesium has 2 electrons. Therefore, there is more attraction abetween the nucleus and electrons in magnesium than that of sodium.

Therefore, sodium is more reactive than magnesium chloride because of lower ionization energy.

For more details on sodium reactivity, check the link below.

brainly.com/question/6837593

8 0
3 years ago
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complete the word equations below to show how the metals are extracted from their oxides: 1) tin oxide + carbon ---&gt; ........
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Answer:

1.) Tin oxide + Carbon → Tin + Carbon monoxide.

2.) Lead oxide + Carbon → Lead + Carbon monoxide.

These equations show that the metals are being extracted by their oxides by heating with carbon. This is because the metals (Tin and Lead) are less reactive than carbon. Remember, extraction methods of metals are determined by their reactivity. Since the elements tin and lead are less reactive than carbon, the extraction process of heating with carbon is needed.  Remember that when a metal heats with carbon, the carbon displaces the metal from the compound and removes the oxygen from the oxide. Leaving you with the metal and carbon monoxide.

7 0
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