Which of these pure elements would be dangerous to hold in the palm of your hand?

a. sodium

b. zinc

c. sulfur

d. gallium

Au-198 with half life of 2.7days after after 5.4 days

How do you prepare a 250 mL of a 2.35 M HF dilution from a 15.0 M solution

How many moles of magnesium are added to a test tube if Micah and his lab partner could count the number of atoms in the piece of magnesium ribbon to be 1.50 X 1023?

On a graph, which type of line shows a direct proportion? A - downwardly curved line B - jagged line C - straight line D - upwardly curved line

A binary ionic compound is known to contain a cation with 51 protons and 48 electrons. The anion contains one-third the number of protons as the cation. The num - ber of electrons in the anion is equal to the number of protons plus 1.

Collagen is made of fibers and is found in tendons and cartilage. Collagen contributes to meat toughness and is, therefore, an example of which type of protein?

1. Why does CH30 evaporate faster than water?

How does concentration affect our daily lives in science?

How many nitrogen atoms are in 2.79 mo. of NH3

What is the chemical formula for polysaccharide?