Which of the following elements has the lowest electronegativity?

a. lithium

c. bromine

b. carbon

d. fluorine

If there's a jar that contains helium gas. What would happen if the lid of the jar was removed?

Which type of protein controls what goes into and out of cells? A. amino B. membrane C. globular D. fibrous

When heated, a non-radioactive halogen, x, reversibly reacts with hydrogen to form HX. identify x and explain the reversibility of the reaction

Iron displaces copper from a solution of a copper salt. The reaction is deemed as a redox reaction. Give reason.

What influences the strength of an electric field? A. the speed of the test charge B. amount of charge on the test charge C. amount of charge on the source charge D. location of the test charge

Enter a balanced chemical equation for the combustion of gaseous methanol.

Being able to identify good source of scientific information and apply the knowledge to problems in your life is a part of having A Scientific hypothesis B Scientific inquiry C Scientific literacy D Scientific laws

Hexane and heptane are miscible with each other in all proportions. In making a solution of them, is the entropy of the system increased, decreased, or close to zero, compared to the separate pure liquids? a. The entropy of the system is increased.

Determine the hydronium ion concentration in a solution that is 0.00014 M HCl. Answer in units of M.

Which element in period 2 has the most mass