How many moles of sodium chloride are required to prepare 500.0 mL of a 0.100 M solution?

Mannitol salt agar is defined as both a selective and a differential agar since it selects against non-halophiles and allows the researcher to distinguish between organisms that vary in their ability to ferment mannitol. True or false?

Choose all the right answers. Which are correct functions of the cell membrane? allows oxygen to enter allows carbon dioxide to enter stops harmful chemicals from entering stops harmful chemicals from exiting acts like a gate keeper

Calculate the percentage by mass of oxygen in nh4

Why do organisms eat food?

Calculate the energy change for the reaction K (g) + Br (g) → K + (g) + Br - (g) given the following ionization energy (IE) and electron affinity (EA) values IE EA K: 419 kJ/mol 48 kJ/mol Br: 1140 kJ/mol 324 kJ/mol

How does light pollution affect plants and animals? Light pollution harms plants and animals because they confuse it with

In what ways are polyatomic ions like simple ions

How does oxygen obey the octet rule when reacting to form compounds? A) It gains electrons. B) It gives up electrons. C) It does not change its number of electrons. D) Oxygen does not obey the octet rule.

Which equation obeys the law of conservation of mass? A. 2Fe+3O2 - -> 2Fe2O3 B. 4Fe+O2--> 2Fe2O3 C. Fe+O2--> Fe2O2 D. 4Fe+3O2--> 2Fe2O3

Why do airbags fill evenly with gases?