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Questions in chemistry

[Done] Which element reacts most vigorously with water? A. Alkali metal B. Alkaline earth metal C. Transition metal D. Halogen E. Noble gas

[Done] Is [tex]$BH_2F$[/tex] a gas or a liquid, and what is its boiling point?

[Done] What is the total mass of 2.0 moles of diatomic hydrogen?

[Done] Which element has properties most similar to Bromine? A. F B. Kr C. S D. Se

[Done] Which term best describes the molecular geometry of ethylene, C₂H₄? A. Linear B. Planar C. Pyramidal D. Octahedral E. Trigonal

[Done] What do Jupiter and Saturn have in common, and what do they not?

[Done] Which elements need to lose one electron to form a stable octet? A. Alkali metals B. Alkaline earth metals C. Noble gases D. Lanthanides

[Done] If the substances below, which is best able to conduct electricity? a. KBr(l) b. NaC₂H₃O₂(s) c. C₆H₁₂O₆(aq) d. CH₃OH(aq) e. NaCl(s)

[Done] The atomic mass of an element is 32.07 u, and its atomic number is 16. The element forms a simple ion. The ion will most likely have a charge of: A. 1– B. 2– C. 3+ D. 1+

[Done] Calculate the number of moles for each of the following: 1. 9.00 g of H\(_2\)O 2. 88.0 g of CO\(_2\) 3. 1.70 g of NH\(_3\)