Answer:
7178.22 mL
Explanation:
Applying,
PV = P'V'................. Equation 1
Where P = Initial pressureof gas, V = Initial volume of gas, P' = Final pressure of gas, V' = Final volume of gas.
make V' the subject of the equation
V' = PV/P'.............. Equation 2
From the question,
Given: V = 2250 mL, P = 290 kPa, P' = 0.9 atm = (101×0.9) = 90.9 kPa
Substitute these values into equation 2
V' = (2250×290)/90.9
V' = 7178.22 mL
11 L because you just need to use a pie chart
Thermal energy is a form of B. Kinetic Energy.
Neutrons = 118
<h3>Further explanation </h3>
The elements in nature have several types of isotopes
Isotopes are elements that have the same Atomic Number (Proton)
Atomic mass is <em>the average atomic mass of all its isotopes </em>
The most abundant isotope of gold (Au) is isotope Au-197
So the atomic mass of Au = 197
and the atomic number of Au = 79
Atomic mass is the sum of protons and neutrons
Atomic Number (Z) = Atomic mass (A) - Neutrons
Neutrons = A - Z
So neutrons for Au-197 :
Answer:
2.48 × 10⁴ mol
Explanation:
Step 1: Write the balanced equation
2 CrO₄²⁻ + 3 SO₂ + 4 H⁺ ⇒ Cr₂(SO₄)₃ + 2 H₂O
Step 2: Calculate the reacting moles of CrO₄²⁻
3.00 × 10⁸ L of 5.50 × 10⁻² mM CrO₄²⁻ react. The reacting moles are:
3.00 × 10⁸ L × 5.50 × 10⁻² × 10⁻³ mol/L = 1.65 × 10⁴ mol
Step 3: Calculate the reacting moles of SO₂
The molar ratio of CrO₄²⁻ to SO₂ is 2:3. The reacting moles of SO₂ are 3/2 × 1.65 × 10⁴ mol = 2.48 × 10⁴ mol.
