The percentage composition of compound CF₄ is %C = 13.64% and %F = 86.36% .
Compound is defined as a chemical substance made up of identical molecules containing atoms from more than one type of chemical element.
Molecule consisting atoms of only one element is not called compound.It is transformed into new substances during chemical reactions. There are four major types of compounds depending on chemical bonding present in them.They are:
1)Molecular compounds where in atoms are joined by covalent bonds.
2) ionic compounds where atoms are joined by ionic bond.
3)Inter-metallic compounds where atoms are held by metallic bonds
4) co-ordination complexes where atoms are held by co-ordinate bonds.
The solution are as follows:
Molar mass of CF₄ = 88
molar mass of C = 12
molar mass of F = 4 x 19 = 76
% C = 12/88 x 100 = 13.64%
% F = 76/88 x 100 = 86.36%
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The current in a circuit is governed by voltage and resistance, as dictated by Ohm's Law. The voltage-current relationship can be linear in ohmic materials or nonlinear in non-ohmic materials.
The current flowing in a circuit depends primarily on two variables: voltage and resistance. This relationship is defined through Ohm's Law, which states that the current (I) in a circuit is equal to the voltage (V) divided by the resistance (R), or I=V/R.
When the voltage increases while the resistance remains constant, the current will increase. Conversely, when the resistance increases while the voltage remains constant, the current will decrease. Thus, for example, if the resistance doubles, the current is cut in half.
However, it is important to note that not all materials follow this linear relationship. Some materials, known as ohmic materials, follow Ohm's Law, while others, known as non-ohmic materials, exhibit a nonlinear voltage-current relationship.
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Answer:
The atom's energy will decrease by 8.99 x 10⁻²⁶ J.
Explanation:
The atom's energy will go down by an amount equal to the energy of the photon that it emits.
The energy E of a photon is inversely proportional to its wavelength according to the following equation, where h is Planck's constant and c is the speed of light:
E = (hc)/λ
We substitute the values into the equation to solve for the energy:
E = (hc)/λ = (6.626 x 10⁻³⁴ J·s)(2.998 x 10⁸ m·s⁻¹) / 2.21 m
E = 8.99 x 10 ⁻²⁶ J
Thus, the atom's energy will decrease by 8.99 x 10⁻²⁶ J.