Which formula represents copper(I) oxide?
(1) CuO (3) Cu2O
(2) CuO2 (4) Cu2O2
Answers
Answer : The correct formula of copper(I) oxide is, (3)
Explanation :
Copper(I) oxide is an ionic compound because copper element is a metal and oxide element is a non-metal. The bond formed between a metal and a non-metal is always ionic in nature.
The nomenclature of ionic compounds is given by:
- Positive ion is written first.
- The negative ion is written next and a suffix is added at the end of the negative ion. The suffix written is '-ide'.
- In case of transition metals, the oxidation state are written in roman numerals in bracket in-front of positive ions.
The charge on copper is (+1) and the the charge on oxide is (-2). The charges are not balanced. The charges are balanced by the criss-cross method.
Hence, the formula of copper(I) oxide is,
Related Questions
Unrestricted populations of organisms experience _____.a. exponential growthb. linear growthc. fertilityd. biotic growthUser: As a population reaches its carrying capacity, there is an increase in competition fora. food.b. shelter.c. mates.d. All of the above
In a compound, chemical energy is contained in thea. nuclei of the atoms.b. unbonded electrons.c. bonds.d. movement of the electrons.
Which element has an atom in the ground state with a total of three valence electrons
Why can liquid metal be poured into a block-shaped mold?Describe what happens to the shape and volume of the liquidmetal.
Answers
Since the number of moles of acid will not change, we can use this formula:
M1 V1 = M2 V2
Where M is the concentration of the acid in the solution
V1 = 10 mL
and
V2 = Vwater + 10
If we add an additional 5 mL of acid, the new concentration of the acid will be:
M = (M1 (5mL) + M2 (Vwater + 10mL)) / (5mL + Vwater + 10mL)
The concentration of acid in the new solution will increase.
Long story short, C is the answer.
Answers
Answer:
- (A.) Kinetic energy decreases
- (B.) Force of attraction increases
- (C.) Space between particles remains the same
Explanation:
Kinetic energy is the energy in motion. Cooling if liquid would cause decreased temperature and hence slow down the oscillation of the particles.
Likewise, increased heat reduces the force of attraction between said particles, which allowed for their free movement. So the cooling would have opposite effect.
Finally, the space between the particles would remain the same as it was originally, as their force of attraction is increased in the cooling process, they would take the form they are held in.
I hope this was helpful and concise?
Answers
Explanation:
To find the charge gained by the solid when one electron is removed from each of its atoms, you can follow these steps:
1. Calculate the total number of electrons in 1 gram of the solid. Since there are 4 × 10^20 atoms in 1 kg, there are (4 × 10^20 / 1000) atoms in 1 gram.
2. Multiply the number of atoms in 1 gram by the charge gained by removing one electron. Each electron has a charge of approximately -1.6 × 10^-19 coulombs.
3. The total charge gained by the solid in 1 gram is the result of the multiplication from step 2.
Let's calculate it step by step:
Number of atoms in 1 gram = (4 × 10^20 / 1000) = 4 × 10^17 atoms
Charge gained by removing one electron from an atom = -1.6 × 10^-19 C
Total charge gained by the solid in 1 gram = (4 × 10^17) × (-1.6 × 10^-19) C
Now, calculate this expression to find the charge gained by the solid in 1 gram.
Final answer:
The charge gained by a solid when one electron is removed from each atom can be calculated by multiplying the charge of one electron by the number of atoms in the solid.
Explanation:
The question asks for the charge gained by a solid when one electron is removed from each atom of the solid. The charge gained by one atom can be calculated by multiplying the charge of one electron (1.602 × 10-19 C) by the number of atoms in one gram of the solid (4 × 1020 atoms/g). To find the total charge gained by the solid in 1g, we can multiply the charge gained by one atom by the number of atoms in 1g of the solid (1 mole = 6.02 × 1023 atoms).
Charge gained by one atom = 1.602 × 10-19 C
Number of atoms in 1g = 4 × 1020 atoms/g
Total charge gained by 1g of solid = Charge gained by one atom × Number of atoms in 1g
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Answers
Answer:
gravity
Explanation:
your mass is the same on the moon as is on earth or underwater but your weight changes because of gravity
Answers
Final answer:
The atom X has 15 electrons.
Explanation:
The number of electrons in an atom is equal to the number of protons. Since the atom X has 15 protons, it also has 15 electrons.
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Answers
The nucleus of an atom is positively charged and the electrons are negatively charged therefore, the nucleus of an atom attracts the electrons around it and this nature is called nuclear charge.
What is the nuclear charge?
Each electron in an atom experiences two kinds of force one is an attraction to the nucleus and another is repulsion from other electrons. The presence of many electrons makes more repulsive force and this decreases the nuclear attraction.
The amount of nuclear charge is the positive charge experienced by an electron that is present in a multi-electron atom. The attractive interaction between the nucleus of an atom and electrons of the same atom increases with the increase of positive charge (+Ze) on the nucleus.
This attraction for the valence electrons will be lower because of the Shielding of inner shell electrons. Due to the shielding of inner-shell electrons, the valence electrons will not experience the positive charge of the nucleus entirely while electrons close to the nucleus feel maximum attraction and have the lowest energy.
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