1. How many grams are in 8.00 x 1025 atoms of Ss?
2. Balance the equation for the complete combustion of butane is
_C4H10+ _02_CO2 +_H2O
a)
3. Carry out the following operation(s) and express your answer in the proper number of
significant figures. Look at the equipment.
For a) tell which is better to get a more
accurate measurement and why (briefly) b) What is this called and give uncertainty
even if you cannot read this picture... c) Name this equipment and say if TC or TD
ta
а a
b.
b
E
d. How many significant figures are in 0.0140?
e. How many H atoms are present in 144.00 grams of caffeine C8H10N4O2?

Is a measure of the resistance to flow. a high liquid has a high resistance to flow and flows slowly. the ancients thought everything in the world was made of 4 we now know that there are 94 naturally occurring and scientists have created another 24 i am certain they will create even more. honey flows slowly because it has a high to flowing. a can be separated by physical means because it contains more than one pure substance and 2 pure substances are not chemically bonded to each other. a cannot be separated by physical means. all matter is made up of all elements are with the same number of protons. if it is just a single or many bonded together, if all of them have the same number of protons, it is an element. in a piece of pure iron metal, all the are joined together, that piece of iron metal is called elemental iron. a single of iron is called elemental iron. a mixture has differences from place to place. we might need a microscope to see them or they might be obvious to the unaided eye. there are surfaces separating it into different phases. a mixture is the same everywhere. it is uniform. there are no surfaces separating it into different phases. if different kinds of atoms (different elements) are bonded together by their electrons, it is called a there are physical means of to isolate the different pure substances in a mixture and there are chemical means of to isolate the different elements in a compound. 1. element 2. compound 3. mixture 4. heterogeneous 5. homogeneous 6. pure substance 7. atoms 8. separation 9. viscosity 10. resistance

About 3% of the water on earth is freshest. only about 40% of that freshwater is available for human use. why is so much freshwater unavailable for human use?

How do limiting factors most affect population size? ostop population growthrestrict population growthincrease population sizeresult in positive impactso