Match the scientific career with the appropriate definition. 1. a scientist who deals with the properties, composition, and reactions of substances
physicist
2. a scientist who studies properties of matter such as gravity, motion and acceleration
marine biologist
3. a scientist who observes and protects dolphins
chemist
4. a scientist who works with the history of the earth and planets that is recorded in rocks
geologist
5. a scientist who studies the origin of living organisms through fossils
paleontologist

answer: your mm

explanation:

"you start with 15.67 g mgco3-xh2o, when heated and all the water is removed, you are left with 7.58 g mgco3 only.

therefore, you had 15.67 - 7.58 = 8.09g h2o  

moles of each :

7.58g mgco3 = ? moles = 7.58g / 83.4g/mole = 0.09moles  

8 09g h2o = ? moles = 8.09g / 18g/mole = 0.44moles  

molar ratio between the two by dividing both numbers by the smallest number :

0.09 / 0.09 = 1  

0.44 / 0.09 = 4.8  

mgco3-5h2o"

the answer is:  

line graphs show patterns in data with variables that change over time; whereas, circle graphs show data as parts out of a whole (such as out of 100%).

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.