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MrRissso [65]
3 years ago
15

_______________________________: a type of observation which can be counted or measured, often using tools like a thermometer, a

scale, or a ruler. _______________________________ _____________________________: all the data collected during scientific investigations. It is best gathered by doing the investigation yourself, not reading other peoples’ work. (two words) Scientific ______________________________: a specific relationship under given conditions that tells what happens in the natural world. Based on a body of evidence, they are universal and will rarely if ever change. Scientific ______________________________: a well-supported and widely accepted explanation of nature. They can and do change if new evidence arises.

Chemistry
2 answers:
katen-ka-za [31]3 years ago
8 0
Can u help me pls this science :/

Ber [7]3 years ago
4 0

Answer:

<u>A Quantative Observation</u>: A type of observation which can be counted or measured, often using tools like a thermometer, a scale, or a ruler.

<u>Observation:</u> All the data collected during scientific investigations. It is best gathered by doing the investigation yourself, not reading other peoples’ work.

<u>Scientific Law</u>: a specific relationship under given conditions that tells what happens in the natural world. Based on a body of evidence, they are universal and will rarely if ever change.

<u>Scientific Theory</u>: a well-supported and widely accepted explanation of nature. They can and do change if new evidence arises.

I hope I got these right and I hope you got the help you wanted!

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% Composition = ?
no atom in 2 g of styrene =? 
molar mass of strene =104.15
% composition of c= 12/13.008 =.922*100=92.2
% composition of h =1.008/13.008=0.0774*100= 7.74

no gram atom=mass in kg /molar mass=2/104.15 =0.01920 mol
no of gram atom * avogadro's number  = 0.0192*6.02 *10( exponent 23) =1.15584 


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If the density of water is 1.00 g/mL and the density of mercury is 13.6 g/mL, how high a column of water in meters can be suppor
dexar [7]

Answer:

The answer to this is

The column of water in meters that can be supported by standard atmospheric pressure is 10.336 meters

Explanation:

To solve this we first list out the variables thus

Density of the water = 1.00 g/mL =1000 kg/m³

density of mercury  = 13.6 g/mL = 13600 kg/m³

Standard atmospheric pressure = 760 mmHg or 101.325 kilopascals

Therefore from the equation for denstity we have

Density = mass/volume

Pressure = Force/Area  and for  a column of water, pressure = Density × gravity×height

Therefore where standard atmospheric pressure = 760 mmHg we have for Standard tmospheric pressure= 13600 kg/m³ × 9.81 m/s² × 0.76 m = 101396.16 Pa

This value of pressure should be supported by the column of water as follows

Pressure = 101396.16 Pa =  kg/m³×9.81 m/s² ×h

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The column of water in meters that can be supported by standard atmospheric pressure is 10.336 meters

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