How does the composition of a galaxy compare to the composition of the universe?

At STP, both diamond and graphite are solids composed of carbon atoms. These solids have (1) the same crystal structure and same properties (2) the same crystal structure and different properties (3) different crystal structure and same properties

Molecules in a sample of NH3 (l) are held closely together by intermolecular forces (1) existing between ions (2) existing between electrons (3) caused by different numbers of neutrons (4) caused by unequal charge distribution

Real gases behave most nearly like ideal gases at 1. high temperatures and high pressures. 2. high pressures and low molar masses. 3. low temperatures and high pressures. 4. low temperatures and low pressures. 5. high temperatures and low pressures.

Which time is equivalent to 3 years? A. 9.4 * 107s B. 1.6 * 106s C. 3.0 * 107s D. 6.3 * 106s

How many moles of oxygen are produced when 8 moles of Al are produced?

One gram of lipid yields about 9kcal of energy. that is due to the high abundance of which chemical element?

Which of the following happens during a chemical change? Check all of the boxes that apply 0 One atom or more changes into atoms of another element. New substances with different properties are formed. O Solids, liquids, or gases may form.

The energy derived from the movement of H + ions down an electrochemical gradient from the intermembrane space into the matrix is used to drive the synthesis of ATP. How many H + ions must be moved into the matrix for the synthesis of 1 ATP?

Consider two solutions, solution a and solution b. [h+] in solution a is 370 times greater than that in solution b. part a what is the difference in the ph values of the two solutions?

All of the following are possible sources of error in a scientific investigation except for O measuring materials such as mass and volume incorrectly. o recording experimental data incorrectly. o having a constant in your experiment.