The frequency of a tone one octave above a 300-Hz tone has which frequency?

a. 150 Hz
b. 600 Hz
c. 900Hz
d. 306 Hz

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How many moles are in 250 grams of tungsten (w)? * 4.4x10^23 moles 4.2x10^23 moles 0.7 moles 1.4 moles

Why is permeable soil best for plants that need a lot of drainage?

If i initially have a gas at a pressure of 12 atm, a volume of 23 liters, and a temperature of 200 k, and then i raise the pressure to 14 atm and increase the temperature to 300 k, what is the new volume of the gas?