True or false:

Objects that are neutrally charged have no electrical charges present.

A particular atom of calcium has 20 protons, 21 neutrons, and 19 electrons. what is the electrical charge on this atom?

A liquid with a greater viscosity is always denser than a liquid with a lesser viscosity. True or False?

How many hydrogen atoms are there in 7.30 moles of ethanol

What is solubility? solubility is the minimum amount of a solvent that can be used to make a solution. solubility is the pressure necessary to create a solution. solubility is the temperature that can be used to mix a solution.

What is the relation between temperature and rate of reaction?

Which of the following correctly represents the mole ratio between NaOH and FeCl3? 3 NaOH + FeCl3 → 3 NaCl + Fe (OH) 3 A. 1 mol NaOH: 1 mol FeCl3 B. 3 mol NaOH: 3 mol FeCl3 C. 1 mol NaOH: 3 mol FeCl3 D. 3 mol NaOH: 1 mol FeCl3

Is it possible for the overall charge of an ionic compound to be - 1. true false

Light is not a wave because it does not need a medium. t or f

Two liquids are known to be miscible. They are placed in a beaker and shaken. Which of the following describes what will happen? The liquids will eventually separate into two layers. The liquids form a solution.

In the process of eukaryotic pre-mRNA splicing, how is the lariat intermediate formed? a. By joining the 3' end of the intron to the 2' carbon of the branch site b. By joining the 5' end of exon 2 to the 2' carbon of the branch site c.