Answer:
0.971
Explanation:
The pressure (P) in atmospheres (atm) the balloon was filled to will be
P = P1 +P2 + P3
where P1 is the pressure in atm of Helium (0.5 atm)
P2 is the pressure in atm of Nitrogen (X atm)
P3 is the pressure in atm of Hydrogen (0.4 atm)
The value of P2 provided in the question is in mmHg
To convert we have
1 atm = 760 mmHg
X atm = 54 mmHg
X = 54 × 1/760
X = 0.071 atm
Hence, P2 = 0.071 atm
Thus, from the formula earlier
P = 0.5 + 0.071 + 0.4
P = 0.971 atm
Answer:
C. It lists only the substances that are changed.
Explanation:
Balanced Chemical equation:
HClO₂(aq) + NaOH(aq) → H₂O(l) + NaClO₂ (aq)
Ionic equation:
H⁺(aq) + ClO₂⁻(aq) + Na⁺(aq) + OH⁻(aq) → H₂O(l) + Na⁺(aq) + ClO₂⁻ (aq)
Net ionic equation:
H⁺(aq) + OH⁻(aq) → H₂O(l)
The ClO₂⁻(aq) and Na⁺ (aq) are spectator ions that's why these are not written in net ionic equation. The water can not be splitted into ions because it is present in liquid form. This'e why it is written in net ionic equation.
Spectator ions:
These ions are same in both side of chemical reaction. These ions are cancel out. Their presence can not effect the equilibrium of reaction that's why these ions are omitted in net ionic equation.
No, the solid can not be frozen water. This is because water has a melting point of 32 degrees Fahrenheit. Room temperature is well above 32 degrees, so the solid would have begun to melt. Since the solid was not melting, we can infer that it is not water.
