Enter the symbol of a sodium ion, Na+, followed by the formula of a sulfate ion, SO42−. Separate the ions with a comma only—spaces are not allowed.
Answers
Answer: Na⁺, SO₄ ²⁻.
Justification:
This is just a part of a bigger question.
But the instructions are complete to construct the ions.
The first ion requested is the sodium ion.
The symbol of sodium is Na.
When an electron is removed from the neutral atom, the atom wil result with an excess of protons, which translates onto an excess of positive charge.
Then, to show the new particle you must add a positve sign (+) in the form of superscript.
That is why you write Na⁺. By the way, a positive ion is named cation.
Regarding sulfate ion, it comes from the sulfuric acid, when you remove the two hydrogen atoms, each with a positive charge, then the sulfate ion will stand with a negative charge of 2.
The charge is told to belong to the entire ion, not a particular atom, soy you wirte it with the 2- symbol as a superscript for the entire species:
SO₄ ²⁻. A negative ions is called anion.
The answer, then, is: Na⁺, SO₄ ²⁻.
Writing the ion: Na⁺,SO₄²⁻
Further explanation
Ionic compounds consisting of cations (ions +) and anions (ions -)
The naming is preceded by the cation then the anion with the -ide suffix added
Generally for this ion compound consists of metal elements as cations and non-metals as anions
Metal: cation, positively charged.
Nonmetal: negative anion.
The anion cation's charge is crossed
Example:
Fe₂S₃
Fe charge = 3+
S charge = 2-
The writing of the ionic charge is placed as a superscript behind the molecule/ atom, and the number is written before the positive or negative sign. For a single charge, there is no need to write the number
Example
Cl⁻ (single charge)
Mg²⁺ not Mg⁺²
For the element Na symbol which is group 1A and releases one electron, the symbol writing would be: Na⁺(single charge)
For polyatomic ions, the superscript charge is written after the subscript on the polyatomic element, so it becomes SO₄²⁻
These two ions when combined and bind to Na₂SO₄ (The anion cation's charge is crossed)
if written separately as Na⁺, SO₄²⁻
Learn more
the chemical formula for each ionic compound.
two functional groups that contain ionic charges
Binary ionic compounds
Keywords: chemical compound, the naming of chemical compounds
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b. a compound is decomposed by an electric current.
c. a compound burns in the presence of oxygen.
d. a new compound is formed.
Answers
Answer: d. a new compound is formed.
Explanation:
1. Decomposition is a type of chemical reaction in which one reactant gives two or more than two products.
Example:
2. Electrolytic decomposition is a type of chemical reaction in which one reactant gives two or more than two products. on passing electric current.
Example:
3. Combustion is a type of chemical reaction in which fuel is reacted with oxygen to form carbon dioxide and water.
Example:
4. Synthesis reaction is a chemical reaction in which two reactants are combining to form one product.
Example:
B. Henry Knox
C. George Washington
D. Lord Howe
Answers
Since Washington was a qualified and professional leader during the French and Indian Wars, they believed that he would make a terrific one for the Continental Army as well. Considering that he was given authority over such a weak and poor army, he somehow handled to force the British out of Boston in 1776 and soon closed the war by having victory at Yorktown in 1781.
Hope this helps~
Answers
The distance (in meters south) the plate will be given that the plate is moving at a rate of 2 cm/year is 80 meters south (last option)
How do i determine the distance?
Speed is defined as distance travelled per unit time. This is mathematically written as
Speed = Distance travelled / time
If we make distance the subject, we have
Distance travelled = Speed × time
The following data were obtained from the question:
- Speed of plate = 2 cm/year = 2 / 100 = 0.02 m/year
- Time = 4000 years
- Distance travelled =?
Distance travelled = Speed × time
Distance travelled = 0.02 × 4000
Distance travelled = 80 meters south
Thus, we can conclude that the distance travelled is 80 meters south (last option)
Learn more about distance travelled:
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the plate will be 80 meters south from its original location in 4,000 years. The correct answer is (d) 80 meters south.
The plate moves south at a rate of 2 cm/year. To find out how many meters south it will be in 4,000 years, we need to convert the years to centimeters and then meters.
In 4,000 years, the plate will have moved: 2 cm/year x 4,000 years = 8,000 cm.
Now, to convert 8,000 cm to meters, we need to divide by 100 (since there are 100 centimeters in a meter):
8,000 cm / 100 = 80 meters.
So, the plate will be 80 meters south from its original location in 4,000 years. The correct answer is (d) 80 meters south.
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Complete question is:
A plate moves south at a rate of 2 cm/year. How many meters south from its original location will the plate be in 4,000 years?
a. 8,000 meters south
b. 4,000 meters south
c. 200 meters south
d. 80 meters south
Answers
B.) If the solid is not conductive, the bonds are covalent.
C.) If the solid is conductive, the bonds are metallic.
D.) If the solid is not conductive, the bonds are metallic.
Answers
Answer is: C.) If the solid is conductive, the bonds are metallic.
1) Substances with ionic bond conduct an electric current in liquid, but not in solid state, because in liquids ions are mobile, contrary to solids where ions are fixed.
2) Substances with covalent bond not conduct an electric current in liquid and solid state, because they not have free ions or electrons.
3) Substances with metallic bond conduct an electric current in liquid and solid state, because they have mobile electrons. Most metals have strong metallic bond, because strong electrostatic attractive force between valence electrons (metals usually have low ionization energy and lose electrons easy) and positively charged metal ions.
Answer:C.) If the solid is conductive, the bonds are metallic.
Explanation:
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