Which two notations represent atoms that are isotopes of the same element?

a. 12150sn and 11950sn

b. 12150sn and 12150sn

c. 198o and 199f

d. 3917cl and 3919k?

If the kpseudo of the reaction of crystal violet with a substantially larger amount of naoh (0.1 m) is 0.5 s-1 what is k for the overall reaction? (show inverse units as unit^-1)

A homogeneous mixture has the same composition throughout. a. True b. False

Sulfur is an element that can be seen on the periodic table. What will most likely occur if sulfur forms an ionic bond with another element? Sulfur will accept electrons. Sulfur will donate electrons. Sulfur will become a positive ion.

Why is mitchrondrion the power house of the cell

Electrically neutral molecules formed by covalent bonds between atoms that have the same or similar electronegativity are called

Gases are unique because it is the only phase that can be compressed can flow is composed of moving particles cannot be compressed

In a crystal lattice of an ionic compound, A. Kind of a given charge are clustered together B. Ions are surrounded by ions of the opposite charge C. A sea of electrons surrounds the ions D. Neutral molecules are present

Assuming constant pressure and temperature, how many moles of gas have been added to the initial 3 moles of gas when the volume increases from 2.0 to 4.0 liters? a. 1.5 moles b. 2 moles c. 3 moles d. 6 moles

The chemical symbol for sodium is A. N. B. S. C. Na. D. Sn.

What is the pressure of a mixture of co2, so2, and h2o gasses, if each gas has a partial pressure of 25 kpa?