Answer is: 3) H2O and HCl.
Polar molecules are water (H₂O) and hydrochloric acid (HCl).
Nonpolar molecules are carbon(IV) oxide (CO₂) and methane (CH₄).
Carbon(IV) oxide is nonpolar because CO₂ is linear molecule and the oxygen atoms are symmetrical (bond angles 180°).
Water is polar because of the bent shape of the molecule.
Hydrochloric acid has polar covalent chemical bond where hydrogen has oxidation umber +1 and chlorine oxidation number -1.
In molecule of methane (CH₄) all the atoms around the central element (carbon) are equivalent (four hydrogens) and it has a net dipole moment of 0 (vectors of dipole moments cancel each other, dipole moment is zero).
Answer:
213.4°C.
Explanation:
Data obtained from the question:
Initial pressure (P1) = 5.1atm
Initial temperature (T1) = 45°C = 45°C + 273 = 318K
Final pressure (P2) = 7.8atm
Final temperature (T2) =..?
The new temperature can be obtained as follow:
P1/T1 = P2 /T2
5.1/318 = 7.8/T2
Cross multiply
5.1 x T2 = 318 x 7. 8
Divide both side by 5.1
T2 = 318 x 7. 8 /5.1
T2 = 486.4K
Finally, we shall convert 486.4K to celsius temperature. This can be done as follow:
T(°C) = T(K) – 273
T(K) = 486.4K
T(°C) = 486.4 – 273
T(°C) = 213.4°C.
Therefore, the new temperature is 213.4°C
Answer:
2
Explanation:
In the equation, Cl is chlorine and there is a number "2" so that the correct answer is 2.
An object floats if it has low density or has less mass per unit volume. So, Icefloats on water because ICE is lessdenser than WATER. Most of the substances are more dense in their solid state, but water is different. This peculiarity is on account of the structure of ice.
I really hope this helped!!!! ❤
Answer:
radical-initiated
Explanation:
Radical-initiated polymerization is unpredictable and difficult to control. The reaction proceeds indiscriminately and produces shortened chains, loops, and branches that create holes in the polymer. This reduces its mass to volume ratio.
