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Paraphin [41]
3 years ago
7

1. Dissolve 1 teaspoon of Epsom salts in a half cup of water.

Chemistry
2 answers:
Alex Ar [27]3 years ago
8 0

Answer:

1) MgSO_4 + 2 NH_4OH \longrightarrow (NH_4)_2SO_4 + Mg(OH)_2

2) Double displacement reaction

Explanation:

1) Balancing the equation:

The reaction: MgSO_4 + NH_4OH \longrightarrow (NH_4)_2SO_4 + Mg(OH)_2

In a first look we see that the amonium cations are unbalanced so:

MgSO_4 + 2 NH_4OH \longrightarrow (NH_4)_2SO_4 + Mg(OH)_2

Checking element by element we can see that the equation is balanced

2) In this reaction, the amonium discplaces the Mg to form the amonium sulfate. This is a displacement reaction.

Given that it also forms another product (Mg(OH)_2) it's categorized as a double displacement reaction.

andreyandreev [35.5K]3 years ago
7 0
<span>1. The balanced equation for the reaction between magnesium sulfate and ammonia is MgSO4 + 2NH4OH → (NH4)2SO4 + Mg(OH)2
2. The reaction between magnesium sulfate and ammonia is double displacement.</span>
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B Phytoplankton - Zooplankton - Arctic cod - Ringed sal

Explanation:

The food chain that describes the path through which energy takes will be phytoplankton-zooplankton-Arctic cod-Ringed sal. Energy moves in the ecosystem from producers to primary consumers then secondary and tertiary consumers.

  • Autotrophs are those organisms that manufacture their own food. The use chemical substances from the environment to produce their nourishment which serves as the source of energy for the whole ecosystem too.
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4 0
3 years ago
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3 years ago
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Which of the following correctly compares the radii of Cl and Cl−?
nignag [31]

Answer:

Cl has a smaller radius than Cl− because Cl− has an expanded electron cloud.

Explanation:

Definition of atomic radii:

The atomic radius is the distance between center of two bonded atoms.

Trend along period:

As we move from left to right across the periodic table the number of valance electrons in an atom increase.The atomic size tend to decrease in same period of periodic table because the electrons are added with in the same shell. When the electron are added, at the same time protons are also added in the nucleus. The positive charge is going to increase and this charge is greater in effect than the charge of electrons. This effect lead to the greater nuclear attraction. The electrons are pull towards the nucleus and valance shell get closer to the nucleus. As a result of this greater nuclear attraction atomic radius decreases.

Trend along group:

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In this way Cl⁻ will have the largest atomic radii because one extra electron is added and electronic cloud more expanded as compared to neutral atom.

7 0
3 years ago
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