Answer:
Carbon-carbon bonds. (Ans.A).
Explanation:
None covalent bonds are different from covalent bonds, they are not formed by the sharing of electrons which is present between the bonded atoms. They are formed by the help of electrostatic attraction or some other type of interaction found between the ions or atoms.
A carbon-carbon bond is known as a covalent bond, and they are formed with the help of the sharing of electrons which is found between the two carbon atoms. Both carbon atoms have 4 electrons for bonding.
Answer:
If it loses to electrons the net charge will be +2. If the atom instead gains 4 electrons, the net charge will be -4.
Explanation: When an atom loses electrons( which are negatively charged), it turns into a cation. This means since there is more protons(which are positively charged) than electrons, the charge is positive. The charge is positive and than the number of electrons lost. It is the exact opposite for gaining electrons.
Answer:
32
Explanation:
because the number of heliem is your aswer
Answer:
Empirical formula is CaSO₄.
Explanation:
Given data:
Percentage of calcium =29.44%
Percentage of sulfur = 23.55%
Percentage of oxygen = 47.01%
Empirical formula = ?
Solution:
Number of gram atoms of Ca = 29.44 / 40 = 0.74
Number of gram atoms of S = 23.55 / 32 = 0.74
Number of gram atoms of O = 47.01 / 16 = 3
Atomic ratio:
Ca : S : O
0.74/0.74 : 0.74/0.74 : 3/0.74
1 : 1 : 4
Ca : S : O = 1 : 1 : 4
Empirical formula is CaSO₄.
The freezing point depression is calculated through the equation,
ΔT = (kf) x m
where ΔT is the difference in temperature, kf is the freezing point depression constant (1.86°C/m), and m is the molality. Substituting the known values,
5.88 = (1.86)(m)
m is equal to 3.16m
Recall that molality is calculated through the equation,
molality = number of mols / kg of solvent
number of mols = (3.16)(1.25) = 3.95 moles
Then, we multiply the calculated amount in moles with the molar mass of ethylene glycol and the answer would be 244.9 g.
