From Questions to Solutions

A hollow iron pipe is 21 cm long with an external diameter of 8 cm. If the thickness of the pipe is 1 cm and iron weighs 8 g/cm³, then

Florence found 9 rolls of orange and blue ribbon. Each roll of orange ribbon is 4 meters long, and each roll of blue ribbon is 3 meters long. If the

What is the vapor pressure of ethanol (in mmHg) at 62.1 °C if its vapor pressure is 400.0 mmHg at 63.5 °C? Given: - \(\Delta H_{\text{vap}} = 39.3 \, \text{kJ/mol}\)

Select each equation that the decimal 35.9 makes true. 1. [tex]0.01 \times \square = 3, 590[/tex] 2. [tex]0.01 \times \square = 0.359[/tex] 3. [tex]0.1 \times \square = 0.359[/tex] 4. [tex]0.01

Calculate the mole fraction of acetone and cyclohexane in the vapor above the solution. The partial pressure of acetone is 229.5 torr and the partial pressure of cyclohexane is 97.6

Calculate the solubility of KHT (in g/L) when 0.950 g of KHT is dissolved in 25.00 mL of water. Do not include units in your typed answer. a) 38.0 b)

Calculate the wavelength and energy of a photon with the following frequencies of electromagnetic radiation: a. 100.2 MHz (FM radio) b. 1070 kHz (AM radio)

What is the area of the sector shown in the diagram below? A. 50 cm2 B. 11.1 cm2 C. 2.5 cm2 D. 39.3 cm2

A race car entering the curved part of the track drops its speed from 46.4 m/s to 35.9 m/s in 2.56 s. If the radius of the curved part of

The orbit of Eris has a maximum distance of 97.7 AU from the sun. If the albedo is 0.8, what is the average temperature when it is farthest from the

The real image of a concave mirror is six times as large as the object. (a) Determine the image distance for an object that is 39.4 cm from the mirror.

A sphere of radius 5.15 cm and uniform surface charge density [tex]+12.1 \, \mu C/m^2[/tex] exerts an electrostatic force of magnitude [tex]35.9 \times 10^{-3} \, N[/tex] on a point charge

Given the following data, calculate ΔS_vap for K (potassium). Express your answer to one decimal place. ΔS_vap = _____ J·K⁻¹·mol⁻¹ A) 49.2 B) 63.7 C) 28.4 D) 35.9

If a person inhales 82.3 g of O₂ in an hour, what volume (in L) does this amount occupy at 1.03 atm and 36.9 °C? Be sure your answer has

A balloon with a volume of 38.2 L at 91 psi is allowed to expand into a larger container with a total volume of 77.4 L. What is the pressure