What kind of change occurs when salt dissolves in water? chemical change solution change physical change substance change Description

Which of the following pairs are opposing terms? Superior/posterior Superior/inferior Anterior/inferior Superior/anterior

Consider a 1.0-l flask containing neon gas and a 1.5 l flash containing xenon gas. both gases are at the same pressure and temperature. according to avogadro's law, what be said about the ratio of the number of atoms in the two flasks?

In what respect does an atom of magnesium differ from a magnesium ion (Mg^{2+}) ? (A) The ion has a more stable electronic arrangement than the atom.

When comparing two solutions with the same volume, you may say that one is dilute and the other is concentrated. What does this mean? A. The dilute solution contains more solute than the concentrated solution. B.

How many molecules are indicated by writing 2 H2O

Nitrous oxide (n2o), or laughing gas, is commonly used as an anesthetic in dentistry and surgery. how many moles are present in 8.4 liters of nitrous oxide at stp?

How can an atom be electrically neutral when it contains particles that are charged?

Is boiling water considered physical or chemical bond

Which of the following is the correct scientific notation for 0.000451 g? 4.5 x 10-3 4.5 x 10-5 4.51 x 10-4 45.1 x 10-4

A phase change from a solid to a gas is called what