When transition elements react chemically, they may lose electrons from the what?

Determine the mass of 6.44 * 1023 atoms Cl.

6. What are the spiral arms of the Milky Way made of?

Empirical formula 78.3% Ba and 21.7%F

Nitrogen and hydrogen gases react to form ammonia gas via the following reaction: N2 (g) + 3H2 (g) →2NH3 (g) At a certain temperature and pressure, 1.9 L of N2 reacts with 5.7 L of H2.

Scientific discoveries are rarely used in technology. true false

Why is it possible to safely drink a solution that contains a 50:50 mixture of equal concentrations of a strong acid and a strong base, either of which, if ingested separately, would be very caustic and damaging?

Explain why many compounds that contain one or more hydrogen atoms are not classified as arrhenius acids

pure substance x is a green powder. when heated, it gives off a gas and changes to a black powder. is substance x an element or a compound? give reasons

What amount (moles) is represented by each of these samples? a. 20.0 mg caffeine, c8h10n4o2 b. 2.72 1021 mo?

A sample of gas occupies 40.0 mL at - 123°C. What volume does the sample occupy at 27°C if the pressure is held constant? V1T2 = V2T1 Don't forget to convert temperature to kelvin! Group of answer choices 8.80 mL 20.0 mL 80. ML 182 mL