Answer:
1272 pound
Explanation:
From the question given above, the following data were obtained:
Pressure (P) = 38 psi
Area (A) = 12 cm by 18 cm
Force (F) =?
Next, we shall determine the area. This can be obtained as follow:
Area (A) = 12 cm by 18 cm
A = 216 cm²
Next, we shall convert 216 cm² to square inch (in²). This can be obtained as follow:
1 cm² = 0.155 in²
Therefore,
216 cm² = 216 cm² × 0.155 in² / 1 cm
216 cm² = 33.48 in²
Finally, we shall determine the force exerted. This can be obtained as follow:
Pressure (P) = 38 psi = 38 lbf/in²
Area (A) = 33.48 in²
Force (F) =?
P = F/A
38 = F / 33.48
Cross multiply
F = 38 × 33.48
F = 1272 pound
Thus, the force exerted is 1272 pound
At STP
1L O₂ → 2L CO₂
xL O₂ → 5.0L CO₂
x=2.5 L
12)
Answer: an endothermic reaction is where there is absorption of energy during the reaction. The energy of reactants is less than the energy of products.
As the enthalpy of the reaction is the difference in the total enthalpy of formation of products and total energy of formation of reactants and in endothermic reaction enthalpy is positive.
thus the energy of products is more than the energy of reactants.
The true statement is :The overall enthalpy of the system increases during the change.
Question 13
If the volume is lowered to one fourth it will increase the concentration (moles/volume). Thus, It will increase because the concentration of the reactants increases.
Question 14
As the value of equilibrium constant is in multiple of thousand, the reaction will be more favourable in forward direction hence
Ans: The equilibrium reaction mixture will have a very high concentration of products.
Question 15
As the system is in equilibrium and by decreasing the concentration of reactant we are disturbing the equilibrium state. In order to maintain the equlibrium the system will move in backward direction and hence
The rate of reverse reaction increases.
Answer:
Solid sodium hydroxide dissolves in water to form an aqueous solution of ions.
NaOH(s) ⇌ Na+(aq) + OH–(aq) ΔH1 = ?
Solid sodium hydroxide reacts with aqueous hydrochloric acid to form water and an aqueous solution of sodium chloride.
NaOH(s) + H+(aq) + Cl–(aq) ⇌ H2O(l) + Na+(aq) + Cl–(aq) ΔH2 = ?
Solutions of aqueous sodium hydroxide and hydrochloric acid react to form water and aqueous sodium chloride.
Na+(aq) + OH–(aq) + H+(aq) + Cl–(aq) ⇌ H2O(l) + Na+(aq) + Cl–(aq) ΔH3 = ?
Answer:
A protein is more stable in its native form, because apart of weak interactions between R groups, it also presents other stronger interactions, as those including covalent bonds
Explanation:
For example, covalent bonds between sulfur atoms when disulfide bridges are built. These links are very difficult to break and maintains the protein shape. Disulfide bonds are a few but they use to incide in the structure of native proteins
