A sample of an unknown material weighs 500.0 N in air and 400.0 N when submerged in an alcohol solution with a density of 0.70 × 103 kg/m^3. What is the density of the material?

What are segments of dna that code for a particular trait. a combination of dna and proteins make up what

Argon, neon, and xenon are examples of

Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.