Which of these ph numbers indicates the higest level of acidity

Which of the following elements is one of the major components of living organisms? A Sulfur B Carbon C Copper D Silicon

Explain, in terms of carbon-carbon bonds, why this hydrocarbon is saturated.

Mendeleev organized the elements: 1) alphabetically by name 2) by numbers of electrons 3) by increasing atomic weight and similar properties 4) by increasing atomic number and similar properties

A chemistry student adds a quantity of an unknown solid compound X to 5.00 L of distilled water at 15 degrees Celsius. After 10 minutes of stirring, only a little X has dissolved.

If a reaction mixture is initially 0.35 m in x, what is the concentration of x after 190 seconds? if a reaction mixture is initially 0.35 in, what is the concentration of after 190 seconds? 0.00 m 0.11 m 0.34 m 0.21 m

What is a group of specialized cells called when they work together to perform a specific function?

What is the overall chemical equation for smog after the above intermediate reactions are combined?

Are iron filings a pure substance?

The positively charged particle of an atom is called a (n)

What is the volume in ml of one pound of mercury?