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storchak [24]
4 years ago
9

The density of cadmium is 8.65 g/mL, what is the volume of a 33.4 g object made of pure cadmium?

Chemistry
1 answer:
Rzqust [24]4 years ago
6 0

Answer:

Volume = 3.86 ml (Approx)

Explanation:

Given:

Density of cadmium = 8.65 g/ml

Mass of pure object = 33.4 g

Find:

Volume pure cadmium

Computation:

Volume = Mass / Density

Volume = 33.4 / 8.65

Volume = 3.86 ml (Approx)

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V2O5 + Ca = V + CaO balance the eqaution
andreyandreev [35.5K]

Answer: The balanced equation is V_{2}O_{5} + 5Ca \rightarrow 2V + 5CaO.

Explanation:

A chemical equation which contains same number of atoms on both reactant and product side is called a balanced chemical equation.

For example, V_{2}O_{5} + Ca \rightarrow V + CaO

Here, number of atoms on reactant side are as follows.

  • V = 2
  • O = 5
  • Ca = 1

The number of atoms on product side are as follows.

  • V = 1
  • O = 1
  • Ca = 1

In order to balance this equation, multiply Ca by 5 on reactant side. Multiply V by 2 and CaO by 5 on product side. Therefore, the equation can be rewritten as follows.

V_{2}O_{5} + 5Ca \rightarrow 2V + 5CaO

Now here, number of atoms on reactant side are as follows.

  • V = 2
  • O = 5
  • Ca = 5

The number of atoms on product side are as follows.

  • V = 2
  • O = 5
  • Ca = 5

Since, there are same number of atoms on both reactant and product side. So, the equation is now balanced.

Thus, we can conclude that the balanced equation is V_{2}O_{5} + 5Ca \rightarrow 2V + 5CaO.

5 0
3 years ago
List 2 types of bacteria
Verizon [17]

"Spherical: Bacteria shaped like a ball are called cocci, and a single bacterium is a coccus. Examples include the streptococcus group, responsible for “strep throat.”

Rod-shaped: These are known as bacilli (singular bacillus). ...

Spiral: These are known as spirilla (singular spirillus). " - Medical News Today

8 0
3 years ago
Read 2 more answers
Examine the following set of ionization energy values for a certain element. How many valence electrons does an atom of the neut
yuradex [85]

Answer:

5

Explanation:

Let us look at the values very closely. It is easy to see that the first to the fifth ionization energies of the element are closely related to each other. Recall that the ionization energy increases as the the number of electrons removed from the outermost shell of the atom increases. Hence E1<E2<E3......... The first five ionization energies suggest the removal of valence shell electrons.

However, the sixth and seventh ionization energies shows a jump, the ionization energy suddenly increases by a very high magnitude. This can not suggest the removal of a valence shell electron but the removal of inner or core electrons. Hence the answer.

4 0
4 years ago
electrons do not follow specific paths, so describing the area where an electron is likely to be is more scientifically accurate
r-ruslan [8.4K]

Answer:

Electrons do not follow specific paths, so the area in which an electron is more scientifically accurate is at the orbitals.

Explanation:

As we know in an atom various electrons are present, they are filled in the orbitals in order to decrease the energy of the atom. These electrons inside the orbitals are arranged from smaller to larger. The lowest one is filled first, the order in which energy is filled is like 1s, 2s, 2p,3s3p,4s,3d etc. The electrons that present far away from the nucleus have the highest energy, the electrons present in the first orbital from the nucleus hold less energy.

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4 years ago
Electrolytic capacitors differ from many other cpapacitors in construction in that they are?
sergeinik [125]
The answer is Polarized
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2 years ago
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