How many particles are in 67.9 grams of water (H2O)?

The peak wavelength for the blackbody curve of a star is in the uv range. assuming the radiation from this star can reach earth, would you be able to see it?

Predict whether the changes in enthalpy, entropy, and free energy will be positive or negative for the boiling of water, and explain your predictions. how does temperature affect the spontaneity of this process?

Apiece of metal with a length of 1.42 cm was measured using four different instruments. which of the following measurements is the most accurate?