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Tresset [83]
3 years ago
11

In which stage of the scientific method are graphs usually created?

Chemistry
2 answers:
olga nikolaevna [1]3 years ago
8 0
I think it is step 4 because first is the problem/ observation then the hypothesis which would be the second step. after that would the experimentation then the data analysis which is when you create graphs which would be step 4 and then you would usually be your conclusion. 
devlian [24]3 years ago
5 0
When you're either drawing conclusion or collecting data.
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A balloon originally had a volume of 4.39 L at 44C and a pressure of 729 torr  to what temperature must the balloon be cooled
VMariaS [17]

The new temperature : 11.56 °C

<h3>Further explanation </h3>

Boyle's law and Gay Lussac's law  

\tt \dfrac{P_1.V_1}{T_1}=\dfrac{P_2.V_2}{T_2}

P1 = initial gas pressure (N/m² or Pa)  

V1 = initial gas volume (m³)  

P2 = final gas pressure  

V2 = final gas volume

T1 = initial gas temperature (K)  

T2 = final gas temperature  

V₁=4.39 L

T₁=44+273=317 K

P₁ = 729 torr = 0,959211 atm

V₂=3.78 L

P₂= 1 atm

\tt \dfrac{0.959211\times 4.39}{317}=\dfrac{1\times 3.78}{T_2}\\\\T_2=\dfrac{1\times 3.78\times 317}{0.959211\times 4.39}\\\\T_2=284.559~K=11.56~C

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3 years ago
An atom has 40 electrons and 46 neutrons. how many protons does it have?
ludmilkaskok [199]
Atoms have equal numbers of protons and electrons. So it have 40 protons.
4 0
4 years ago
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7 0
3 years ago
Which state of matter has a definite volume but can change its shape?
sashaice [31]

Answer:

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because solid has a definite shape and volume

5 0
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Read 2 more answers
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Oleic acid belongs to class of alkene and in alkenes, addition of H-H across C=C that is carbon carbon double bond results in the formation of alkane as a product in the presence of specific catalyst such as nickel, palladium and platinum.  The reaction is said to be hydrogenation reaction.

Oleic acid (C_{17}H_{33}COOH) consist of 17 carbon atoms attached to 33 hydrogen atoms with one double bond between two carbon atoms and one carboxylic group i.e.(-COOH). When oleic acid is hydrogenated or reacts with hydrogen in the presence of catalyst, then the carbon carbon double breaks by the addition H-H and alkane product i.e. stearic acid  (C_{17}H_{35}COOH) is formed.

The chemical reaction is shown in the image.

7 0
4 years ago
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