Which element is a halogen and has a larger average atomic mass than arsenic (As) ?

True or false when elements chemically combine they usually form compounds that have properties that are similar to those of the uncombined elements

Teniendo en cuenta las siguientes equivalencias. Resuelve con sus respectivas justificaciones: a. Cuántos mmhg hay en 750 atmósferas. b. Cuántos torr hay en 600 atmósferas. c. Cuántos pascales hay en 540 atmósferas. d.

Calcium, magnesium, and phosphorus are all examples of

Empirical formula of Al2 (SO4) 3?

What is conserved in this reaction? N2 (g) + 3F2 (9) 2NF: (9) O mass and atoms O moles only O atoms only O mass only

Calculate the percent composition of the compound that forms when 222.6 g N combines completely with 77.4 g 0. calculate to the nearest tenth of a percent.

How many moles of hcl will react with 450 mg of Al (OH) 3

Why are two nonpolar substances able to dissolve in each other?

Which of the following illustrates the conservation of matter? A. SnO2 + H2 - -> Sn + 2 H2O B. 2 C + O2 - -> CO2 C. KOH + HBr - -> KBr + H2O D. 6 Cs + N2 - -> 6 Cs3N I want to say B?

AIDS is caused by?