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Lostsunrise [7]
3 years ago
13

Predict the products of the following reaction based upon solubility rules. (Separate substances in a list with a comma. Include

states-of-matter under the given conditions in your answer. Cl-1 is soluble unless with Pb+2, H2+2, and Ag+1. CO3 is unsoluble unless with Li+, Na+, K+, Rb+, Cs+, NH4+.
Rb2CO3(aq) + CaCl2(aq) → ?
Chemistry
1 answer:
SSSSS [86.1K]3 years ago
7 0

Hey there!:

As per solubility rules inorganic compounds that are soluble are

:Ammonium (NH4⁺),potassium (K⁺), sodium (Na⁺) : All ammonium, potassium and sodium salts are soluble. Exceptions:some transition metal compounds.

Bromides (Br⁻), chlorides (Cl⁻) and iodides (I⁻): Most bromides are soluble. Exceptions: salts containing silver, lead, and mercury.


So Rb2Cl2 is expected to be soluble.


 As per solubility rules inorganic compounds that are insoluble are  : Carbonates (CO₃²⁻), chromates (CrO₄²⁻), phosphates (PO₄³⁻), silicates (SiO₄²⁻): All carbonates, chromates, phosphates and silicates are insoluble. Exceptions: those of ammonium, potassium and sodium.


So CaCO3 is insoluble and precipitates

Therefore:

The completed equation is  :


Rb2CO3(aq)  + CaCl2(aq) → CaCO3(s) + Rb2Cl2(aq)


Hope that helps!

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How much aluminum oxide are produced when 46.5g of Al react with 165.37g of MnO?
solong [7]

Aluminum oxide produced : = 79.152 g

<h3>Further explanation</h3>

Given

46.5g of Al

165.37g of MnO

Required

Aluminum oxide produced

Solution

Reaction

2 Al (s) + 3 MnO (s) → 3 Mn (s) + Al₂O₃ (s)

  • mol Al(Ar = 27 g/mol) :

mol = mass : Ar

mol = 46.5 : 27

mol = 1.722

  • mol MnO(Ar=71 g/mol) :

mol = 165.37 : 71

mol = 2.329

mol : coefficient ratio Al : MnO = 1.722/2 : 2.329/3 = 0.861 : 0.776

MnO as a limiting reactant(smaller ratio)

So mol Al₂O₃ based on MnO as a limiting reactant

From equation , mol Al₂O₃ :

= 1/3 x mol MnO

= 1/3 x 2.329

= 0.776

Mass Al₂O₃ (MW=102 g/mol) :

= 0.776 x 102

= 79.152 g

7 0
3 years ago
If the net force on a object is 375 N to the right, in what direction will the object move?
Viktor [21]
To the right
Because there is an unbalanced force in that direction
:)
8 0
3 years ago
How many atoms of San are in 0.796 moles of this element
xenn [34]

Answer:

4.8× 10²³ atoms

Explanation:

Given data:

Number of moles of San element = 0.796 mol

Number of atoms present = ?

Solution:

Avogadro number:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.  The number 6.022 × 10²³ is called Avogadro number.

1 mole = 6.022 × 10²³ atoms

0.796 mol ×  6.022 × 10²³ atoms / 1mol

4.8× 10²³ atoms

8 0
3 years ago
4. Know the location of metals, non-metals and metalloids
erastovalidia [21]

Answer:

The metals are to the left of the line (except for hydrogen, which is a nonmetal), the nonmetals are to the right of the line, and the elements immediately adjacent to the line are the metalloids.

Hope this helped

7 0
3 years ago
What type of radioactivity occurs in nuclear reactor if a neutron and uranium are the typical reactants
prisoha [69]

Answer:

Fission. When a large fissile atomic nucleus such as uranium-235 or plutonium-239 absorbs a neutron, it may undergo nuclear fission. The heavy nucleus splits into two or more lighter nuclei, (the fission products), releasing kinetic energy, gamma radiation, and free neutrons.

Explanation:

6 0
2 years ago
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