Contrast the chemical composition of interstellar gas with that of interstellar dust
What will be an ideal response?
Gas is almost all hydrogen and helium, but the dust is clumps of heavier elements, condensed out as grains much like the material of the Earth.
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Name the four known fundamental forces in nature
What will be an ideal response?
Certain types of sunglasses are very effective at diminishing light reflected from surfaces because of polarization
Indicate whether the statement is true or false
Ideal Gas Law: A 0.40-m3 gas tank holds 7.0 moles of ideal diatomic nitrogen gas at a temperature of 290 K. The atomic mass of nitrogen is 14.0 g/mol. What is the pressure of the gas? (R = 8.31 J/mol ? K, 1 atm = 101 kPa)
A. 42 atm B. 37 atm C. 32 atm D. 27 atm E. 22 atm
When sulfur-35 (Z = 16) decays to chlorine-35 (Z = 17), an alpha particle is emitted
Indicate whether the statement is true or false