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2 years ago

Predict the products and write a word equation and a balanced chemical reaction

Chemistry

1 answer:

ddd [48]2 years ago

3 0

Answer:

1.) aqueous lithium sulfate + aqueous calcium iodide ---> aqueous lithium iodide + solid calcium sulfate

2.) Li₂SO₄ (aq) + CaI₂ (aq) ------> 2 LiI (aq) + CaSO₄ (s)

Explanation:

This appears to be a double-displacement reaction. In these reactions, the cation of one compound swaps with the cation of another.

Therefore, lithium swaps with calcium. The new products are lithium iodide (LiI) and calcium sulfate (CaSO₄). Lithium iodide is soluble in water, whereas calcium sulfate is generally not.

The word equation (including the states of matter):

aqueous lithium sulfate + aqueous calcium iodide ---> aqueous lithium iodide + solid calcium sulfate

An equation is balanced when there is an equal amount of each element on both sides of a reaction. If these amounts are unequal, you can add coefficients to modify the quantities of particular molecules.

The unbalanced equation:

Li₂SO₄ (aq) + CaI₂ (aq) ------> LiI (aq) + CaSO₄ (s)

Reactants: 2 lithium, 1 sulfur, 4 oxygen, 1 calcium, 2 iodine

Products: 1 lithium, 1 sulfur, 4 oxygen, 1 calcium, 1 iodine

The balanced equation:

Li₂SO₄ (aq) + CaI₂ (aq) ------> 2 LiI (aq) + CaSO₄ (s)

Reactants: 2 lithium, 1 sulfur, 4 oxygen, 1 calcium, 2 iodine

Products: 2 lithium, 1 sulfur, 4 oxygen, 1 calcium, 2 iodine

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Magnesium has three common isotopes.

sladkih [1.3K]

Answer:

Explanation:

percentage abundance of third isotope = 100 - ( 78.900 + 10.009)

= 11.091 %

Atomic mass

24.1687 x .789 + 25.4830 x .10009 + 24.305 x .11091

19.069 + 2.5506 + 2.69566

= 24.3153 amu

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3 years ago

True/False (A= True & B =False) 46. Blood is a tissue. 47. Elastic cartilage is found in the ears, nose, epiglottis and lary

swat32

Answer:

46.A 47.B 48.B 49.A.50.A.51.B.52.B

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4 years ago

The isotopic mass of ²¹⁰₈₆Rn is 209.989669amu. When this nuclide decays by electron capture, it emits 2.368 MeV. What is the iso

zaharov [31]

Starting from the radon mass, add the mass of the electron, and subtract the mass attributable to the gamma radiation (931 Mev = 1 amu).

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2 years ago

1. Which of the following is NOT a cation?

Bezzdna [24]

Hey Madoudou

The correct answer is option B (sulfate)

The reason is because "Sulfate" has a negative sign.

In order for it to be a cation, it must have positive sign such as "iron(lll)ion

I hope this helps~

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3 years ago

Assume you have 4 solids (A, B, C and D) of similar mass. Which of these requires the greatest energy input to melt?

bazaltina [42]

The solid that require the greatest energy input to melt by mass is the option;

Covalent network

Solution Explanation

The elementary particles of a solid are held together by bonds that require an input of energy to unlock, and once broken, the particles are then able to change location within their containing vessels with less restrictions

Polar covalent molecular solids have the following characteristics;

a) Soluble in water b) Low melting point, b) Conduct electricity

Solids that are made up of a covalent network have the following characteristics

a) High melting point temperature b) Non conductive of electricity c) Not soluble in water

Solids of ionic compounds have the following characteristics;

a) High melting point temperature b) The liquid state and solution conducts electricity c) Soluble in water

Solids that have nonpolar covalent bonds have;

a) Low melting point b) Normally in the gaseous or liquid state b) Not water soluble

The covalent network, and the solids ionic compounds require the most energy to melt, however, the strength of the ionic bond in an ionic compound is a factor the charges present and the sizes of the atom, while the covalent network solid, are combined to form essentially as a single molecule and therefore require the greatest heat energy input to melt

7 0

4 years ago