A substance with a pH of 9 has

A) no H30 + ions or OH - ions.

B) more H30 + ions than OH - ions.

C) more OH - ions than H30 + ions.

D) the same number of H30 + ions as it does OH - ions.

The half life for the decay of carbon - is years. Suppose the activity due to the radioactive decay of the carbon - in a tiny sample of an artifact made of wood from an archeological dig is measured to be.

Describe the interactions between molecules in a mixture (analyte), the stationary phase and various mobile phases used in column chromatography and the effect of these interactions on the separation of the mixture.

What is the charge for an electron

A 72.0-gram piece of metal at 96.0 °C is placed in 130.0 g of water in a calorimeter at 25.5 °C. The final temperature in the calorimeter is 31.0 °C. Determine the specific heat of the metal.

Suppose you are calculating the volume of an object using the following formula: 2.45 cm * 3.2 cm * 4.078 cm. What is the volume of the object expressed to the correct number of significant digits? A. 30 cm3 B. 32 cm3 C. 31.9 cm3 D. 31.971 cm3

Table salt is formed when an electron is transferred from a sodium atom to a

Convert 45 joules to heat calories

What is 450 g of flour a measure of? A) Weight B) Inertia C) Gravity D) Mass

List the four (4) ways you can tell that a chemical reaction has occurred.

A student has 2.99 g of Potassium Permaganate. How many mL of a. 532 M solution can the student make? How does one solve this?