The new volume will be 33.5 L.
Explanation:
The kinetic theory of gases indicates that the space occupied by gas molecules is directly proportional to their temperature while being inversely proportional to the pressure. Assuming the number of moles is n = 1, the equation for gases can be written as:
PV = nRT
In this equation, P stands for pressure, V represents volume, R is the gas constant, and T denotes temperature.
Given that P = 523 Torr, T = 7.50 °C = 7.50 + 273.15 = 280.65 K, and the gas constant R = 62.363 Torr L mol⁻¹K⁻¹.
Consequently, the new volume will be 33.5 L.
HNO₃ → H⁺ + NO₃⁻
v₁=35.0 mL
c₁=0.255 mmol/mL
n₁(NO₃⁻)=v₁c₁
Mg(NO₃)₂ → Mg²⁺ + 2NO₃⁻
v₂=45.0 mL
c₂=0.328 mmol/mL
n₂(NO₃⁻)=2c₂v₂
c₃={n₁+n₂}/(v₁+v₂)={c₁v₁ + 2c₂v₂}/(v₁+v₂)
c₃={35.0*0.255+2*0.328*45.0}/(35.0+45.0)≈0.481 mmol/mL
a. 0.481 m
Analyzing the formula for sulfuric acid reveals the molar proportions:
H: S: O
2: 1: 4
Next, we need to convert the provided mass of hydrogen into moles, calculated by:
Moles = mass / Mr
Moles = 7.27 / 1
Moles = 7.27
Thus, the number of moles for each element are:
S = 7.27 / 2 = 3.64 moles
O = 7.27 * 2 = 14.54 moles
Subsequently, the masses for sulfur and oxygen are:
S = 32 * 3.64 = 116.48 grams
O = 16 * 14.54 = 232.64 grams
The Chemistry Regents is one of the four science Regents exams. The remaining three are Earth Science, Living Environment, and Physics. Passing at least one of these four exams is a requirement for high school graduation.
More information is needed, but in general, a polyatomic ion consists of multiple atoms bonded together, often with instability that affects their bonding patterns.
