Determine the atomic mass of a hypothetical element that occurs on Earth as a mixture of 20.00% 32X (atomic mass of isotope = 32.00 u) and 80.00% 34X (atomic mass of isotope = 34.00 u)
33.60 u
Physics & Space Science
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Free Fall: A stone is thrown with an initial upward velocity of 7.0 m/s and experiences negligible air resistance. If we take upward as the positive direction, what is the velocity of the stone after 0.50 s?
A. 2.1 m/s B. 4.9 m/s C. -2.1 m/s D. -4.9 m/s E. 0.00 m/s
Physics & Space Science
What is an organic molecule based on? Why are they important?
What will be an ideal response?
Physics & Space Science
If one lawn mower causes an 80 dB sound level at a point nearby, four lawnmowers together would cause a sound level of ____________ at that point
a. 92 dB c. 86 dB b. 84 dB d. none of the above
Physics & Space Science
An eroded surface of metamorphic rocks on which a horizontal bed rests is called a
A) strata. B) dike. C) nonuniform surface. D) nonconformity.
Physics & Space Science