How many moles are in 25 grams of H3PO4?

From the data below element first ionization energy 1 1310 kj/mol 2 1011 kj/mol 3 418 kj/mol 4 2080 kj/mol 5 947 kj/mol which elements are likely to be nonmetals? 1. 1 and 2 only 2. 2 and 5 only 3. 3 and 5 only 4. 3 only 5. 1 and 4 only

A typical barometric pressure in redding, california, is about 750 mm hg. calculate this pressure in atm and kpa.

Which of the following does a simple circuit require? A. an energy source, a resistor, and a capacitor B. a load, a conductor, and a resistor C. a load, a resistor, and a capacitor D. an energy source, a load, and a conductor

When an acid and a base react, a particular type of salt is formed. This is an example of what type of reaction? A. physical only B. chemical only C. physical and chemical

A football player runs from the 50 yard line to the 20 in 3.4s seconds, what is his speed?

Uses of iron oxide in nanotechnology (biomedicine)

Organic chemistry is the study of compounds containing A. carbon. B. nitrogen. C. hydrogen. D. oxygen.

Explain why fermentation would occur in your muscle cells as opposed to cellular respiration.

How do intra-specific and inter-specific relationships within a community maintain biodiversity by preventing competitive exclusion?

Which of the following processes is endothermic? A. a hot cup of soup (system) cools on a countertop B. the combustion of butaneC. the chemical reaction in a "hot pack" often used to treat sore musclesD. the vaporization of rubbing alcohol E.