42. What is the source of the electric current produced by a voltaic cell?

a spontaneous oxidation-reduction reaction

competing salt bridges

non-spontaneous reduction at the cathode

an imbalance of ion charges

Which of the following describes nuclear fission? A. An electron is ejected when a neutron becomes a proton. B. A high-energy gamma ray is released from a nucleus. C. A parent element splits into two daughter elements. D.

How does a purebred individual differ from a hybrid individual?

In a normal cellular protein, where would you expect to find a hydrophilic amino acid such as asparagine? In a normal cellular protein, where would you expect to find a hydrophilic amino acid such as asparagine?

The atomic number of argon is 18. will argon tend to form bonds with other elements? explain your answer.

Given the equation:X + Cl2 - - > C2H5Cl + HCl Which molecule is represented by X? (1) C2H4 (3) C3H6 (2) C2H6 (4) C3H8

What is the product? 3•[1 - 4 5 - 7] [3 - 12 15 - 21] [4 - 1 8 - 4] [3 12 15 21] [4 - 12 8 - 21]

A hormone is an organ that secretes chemical substances into the bloodstream.

Complete and balance the equation for the combustion of zns in excess oxygen? zns + ? o2→? zno + ? use no fractional coefficients. the number of moles and the formula of the product containing s are

What is the relationship between the units of measurement for the volume of a liquid and of a solid object?

1. Which of the following elements is a transition metal?