When barium hydroxide and ammonium chloride react, the temperature of the mixture decreases. What kind of reaction is this?

An ultraviolet wave traveling through a vacuum has a wavelength of 4.0 * 10-7 m. The wave's frequency, written in scientific notation to two significant figures, is * 1014 Hz.

How many moles are in 30.00 grams of H2PO4

If you burn 50.6 g of hydrogen and produce 452 g of water, how much oxygen reacted?

What units of measurement do scientists use?

At 900∘c titanium tetrachloride vapor reacts with molten magnesium metal to form solid titanium metal and molten magnesium chloride. what is being oxidized, and what is being reduced?

What are the pros of using steel?

For an experiment, a student needs 100.0 mL of 0.4220 M NaCl. If the student starts with NaCl (s) and distilled water, which of the following pieces of laboratory glassware should the student use to prepare the solution with the greatest accuracy?

In a dilution, solvent is added to a given amount of a concentrated solution. What happened to the total concentration?

Why does claudius plan to poison the drink?

Which statement best describes the movement of atoms in a solid? They are able to slide past each other. They spread apart as far as possible. They have no freedom to move. They are free to move in all directions.