The number of molecules in 1.00 liter of O2 gas at 56◦C and 821 torr is 1. 1.83 × 1025 molec.
2. 32 molec.
3. 2.24 × 1023 molec.
4. 2.41 × 1022 molec.
5. 4 × 10−2 molec.

Layers of rock containing fossils, like the layers illustrated here, are most likely composed of rocks.

Look at the spectrums of a star moving towards earth and a motionless star. which of these is a correct inference that can be draw from the observation of the two spectrums? (2 points) the spectrum of a motionless star is difficult to be viewed separately using oridinary telescopes. the spectrum of a motionless star is identical to the spectrum of a star which moves towards earth. the spectrum of a star shifts towards the red region when the star moves towards earth. the spectrum of a star shifts towards the blue region when the star moves towards earth.

Determine the empirical formula for succinic acid that is composed of 40.60% carbon, 5.18% hydrogen, and 54.22% oxygen.