Blog

The correct name for MgBr2 is

Which of the following choices best classifies the following reaction:  Na2(SO4)   +   Pb(NO3)2    Pb(SO4)  +  2 Na(NO3) a. combination b. single replacement c. decomposition d. double replacement  e. redox f.  nonredox

Which element is reduced in the following reaction?  Zn  +   2 HCl   →  ZnCl2   +  H2

In a oxidation-reduction reaction, the reducing agent is:

Which one of the following statements describing the general properties of liquids is false?

Which of the following choices best classifies the following reaction:  Na2(SO4)   +   Pb(NO3)2    Pb(SO4)  +  2 Na(NO3) a. combination b. single replacement c. decomposition d. double replacement  e. redox f.  nonredox

Determine the oxidation number of the underlined element in the following compound. Be sure to indicate if the oxidation number is positive or negative. NaClO4

Which response includes all the following statements about gases that are true? a. the particles of a gas occupy a definite shape b. a gas can be compressed into a very small volume c. at normal temperatures and pressures, the particles of gases are very far apart d. heating a sample of gas forces the particles closer together e. there are virtually no forces of attraction between gas molecules  

Look at the heating/cooling curve for water diagrammed below. Between which two letters is the phase changing of boiling taking place? Response should be in the form “x and y”. 

Which of the following choices best classifies the following reaction: NaHCO3 → Na2CO3 + H2O + CO a. combination b. single replacement c. decomposition d. double replacement