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MrRissso [65]
4 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]4 years ago
8 0
Can u help me pls this science :/

Ber [7]4 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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Which of the following is a balanced chemical equation?
Artemon [7]
`2H + 02  ----->  2H2O is a Balanced chemical equation. 


WATCH THESE FOR A BETTER UNDERSTANDING :
https://www.youtube.com/watch?v=yA3TZJ2em6g

https://www.youtube.com/watch?v=eNsVaUCzvLA
5 0
3 years ago
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What was the original pressure in a rigid container if the new pressure is 82.5atm and the temperature was raised from 44C to 67
zhenek [66]

Answer: 54 atm

Explanation:

I did 67/82.5 then got 0.8121212121. I them divided 44 by 0.81212121 and got 54.1791044776

4 0
3 years ago
Does somebody know the answer ?
Alex777 [14]
H2O is the missing reactant.

Just a caveat: this equation isn’t balanced.
3 0
3 years ago
An unknown concentration of sodium thiosulfate, Na2S2O3, is used to titrate a standardized solution of KIO3 with excess KI prese
Maru [420]

Answer: The molarity of Na_2S_2O_3 is 0.108 M

Explanation:

KIO_3+5KI+3H_2SO_4\rightarrow 3K_2SO_4+3H_2O+3I_2

2Na_2S_2O_3+I_2\rightarrow Na_2S_4O_6+2NaI

To calculate the number of moles for given molarity, we use the equation:

\text{Molarity of the solution}=\frac{\text{Moles of solute}}{\text{Volume of solution (in L)}}    

\text{Moles of }KIO_3=\frac{0.0131mol/L\times 21.55}{1000}=2.8\times 10^{-4}mol

1 mole of KIO_3  produces = 3 moles of   I_2

2.8\times 10^{-4} moles of KIO_3 produces = \frac{3}{1}\times 2.8\times 10^{-4}=8.4\times 10^{-4} moles of I_2  

Now 1 mole of I_2 uses = 2 moles of Na_2S_2O_3

8.4\times 10^{-4} moles of I_2 uses =  \frac{2}{1}\times 8.4\times 10^{-4}=1.69\times 10^{-3}  moles of Na_2S_2O_3

\text{Molarity of the solution}=\frac{\text{Moles of solute}}{\text{Volume of solution in L}}=\frac{1.69\times 10^{-3}\times 1000}{15.65}=0.108M

The molarity of Na_2S_2O_3 is 0.108 M  

6 0
3 years ago
Which element will have properties most similar to those of potassium?
const2013 [10]
Phosphorus but I’m not sure
8 0
3 years ago
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