Answer:
3
Explanation:
If we want it to be rounded to one significant figure, it will be 3.
Total cost: $603.42
Tickets (total): 134.23*4= $536.92
603.42-536.92= $66.50
Hot dog (total)= $9
66.5-9= $57.50
Popcorn (total)= $17.50
57.50-17.50= $40
They bought 2 parking passes
40/2=20
Answer: Each pass costs $20
Answer:
0.031 parts per million
Explanation:
80 micrograms/m^3 = 80 micrograms/m^3 × 1m^3/1000L = 0.08 micrograms/L
Concentration in parts per million = concentration in micrograms/L × molar volume/MW
Concentration in micrograms/L = 0.08
Molar volume at 25°C and 101.325kPa (1 atm) is 24.45L
MW of SO2 = 64g/mole
Concentration in ppm = 0.08×24.45/64 = 0.031 ppm
Answer:
5.46
Explanation:
From the question,
pH this can be defined as the acidity or alkalinity of a solution.
The expression for pH is given as
pH = -log(H⁺)...................... Equation 1
Where H⁺ = Hydrogen ion of HCL
Given: H⁺ = 3.5×10⁻⁶ M
Substitite this value into equation 1
pH = -log(3.5×10⁻⁶)
pH = 5.46
Hence the pH of HCl is 5.46
Answer:
can be replaced in a short amount of time
Explanation:
done
