What two quantities must be known to calculate the density of a sample of matter?

a. mass and volume

b. length and mass

c. size and weight

d. weight and volume

Which (metals or nonmetals) are most likely to give away electrons?

Five elements named after color

According to the kinetic-molecular theory, particles of a gas Select one: a. attract each other but do not collide. b. repel each other and collide. c. neither attract nor repel each other but collide. d.

How can an object weight change on a small planet

A 100.00 ml of volume of 0.500 M HCl was mixed with 100.00 ml of 0.500 M KOH in a constant pressure calorimeter. The initial temperature of individual acid and base was 23.0 oC. The final temperature after mixing was 25.5 oC.

A light-year measures the distance a light beam can travel in one year. One light-year is equal to 9 500 000 000 000 kilometers.

The first ionization energy, e, of a potassium atom is 0.696 aj. what is the wavelength of light, in nm, that is just sufficient to ionize a potassium atom? values for constants can be found here.

A gene is a to a chromosome as (A) a pea is to a pod (B) a front to a back (C) a bike is to a car (D) a building is to a window

How are you enjoying this weather? (i need good reasons}

In today's experiment, some lab students let their chromatograms elute slightly longer than others. If one student's solvent front traveled to 9.80 cm, and another student's solvent front traveled 8.