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How do find out how many needed grams to react

Which of the following is used to separate the parts of mixtures a. Atomic number. B. Physical properties. C. Microscopes. D. Burning

Among the intermolecular forces, which forces are typically the weakest?

At 101.3 kPa and 298 K. what is the total amount of heat released when one mole of aluminum oxide, Al2O3 (s), is formed from its elements? (1) 393.5 kJ (2) 837.8 kJ (3) 1676 kJ (4) 3351 kJ

What is Si7Br5 formula name?

True or False: A Solar eclipse occurs when Earth casts a shadow on the Moon.

Compared to a phosphorus atom, a P3 - ion has (1) more electrons and a larger radius (2) more electrons and a smaller radius (3) fewer electrons and a larger radius (4) fewer electrons and a smaller radius

1. Crystals of ammonium chloride, NH4Cl, seem to disappear when mixed with water. The resulting clear liquid containing ammonium chloride and water is a A) compound. B) new substance. C) homogeneous mixture. D) heterogeneous mixture. 2.

During a laboratory experiment you discover that an enzyme-catalyzed reaction has a delta G of - 20 kcal/mol. If you double the amount of enzyme in the reaction, what will be the delta G for the new reaction

A liquid mixture in which particles can be seen and easily separated by settling or filtration is a a. solution. b. suspension. c. solvent. d. solute.