Which of the following parts of decomposing living organisms are usually not preserved as fossils?

bones

skin and organs

teeth and spines

shells

The molar mass of magnesium (Mg) is 24.30 g/mol. There are 6.02 1023 atoms in 1 mol. How many atoms are present in 48.60 g of Mg? 3.32 10^-24 atoms 1.96 10^-21 atoms 1.20 10^24 atoms 7.11 10^26 atoms

A force of 45 n is exerted on an object, resulting in an acceleration of 5 m/s2 for the object. what will the object's acceleration be if the force doubles? a. 2.5 m/s2 b. 5 m/s2 c. 10 m/s2 d. 20 m/s2

What type of bond do the fatty acids in unsaturated fats have? A. all single carbon-to-carbon bonds B. at least one double carbon-to-carbon bond C. carbon bonds that vary depending on temperature D. no carbon-to-carbon bonds

The total pressure inside a 1.43L cylinder at 28 degrees is 1.03 atm. If the temperature drops to - 35 degrees, and the volume remains the same, what is the new temperature inside the cylinder?

Which pair of elements will have a similar valence shell electron configuration?

An animal that backs on a warm rock during the morning hours but retreats to the shade of the rocks during the middle of the day is mostly likely a (n) A. ectotherm B. endotherm C. vertebrate D. chordate

How much water vapor can a cubic meter of air hold at 25 degrees celcius

When 0.50 L of a 12 M solution is diluted to 1.0 L, what is the resulting molarity?

A 52.9g sample of brass, which has a specific heat capacity of 0.375·J·g-1°C-1, is put into a calorimeter (see sketch at right) that contains 100.0g of water. The temperature of the water starts off at 15.0°C.

What is the concentration of 10.00 mL of HBr if it takes 16.73 mL of a 0.253 M LiOH solution to neutralize it?