Identify the letter of the choice that best completes the statement or answers the question.

how close a measured value is to an accepted value is called a(n)

a.
accuracy.

b.

percent error.

c.

measured value

d.

precise measurement.

A. Accuracy

This would be how close a measured value is to an accepted value.

1. 1 mole of anything contains 6.022x10^23 pieces  

d  

2. a  

3. c, number  

5. 1.24x10^24atoms / 6.022x10^23atoms/mole = 2moles h2 atoms  

6. fe2br3 mass = 2moles x mass fe + 3 moles x mass br  

molar mass = grams / number of moles = g/mole  

to find moles = g / molar mass  

to find mass = g = molar mass / moles

organisms are more likely to be more preserved in mud than sand because mud is moist and wet, while sand is very dry.