Is bleaching your hair a physical or chemical change and why

Answers

Answer 1

Answer: I think its chemical change is because leach has chemicals and other stuff on it so I think its chemical change

Answer 2

Answer: Bleaching your hair is a chemical change because it is undergoing a process that changes the chemical makeup of the hair. Think of this: if you had a sample of hair from before you bleached it and after you bleached it, they would look completely different from each other, unlike if you had just cut a piece of hair off.

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Plz answer as fast as you cansolid sodium iodide does not conduct electricity
why does sodium iodide solution conduct electricity

2) when sodium iodide is electrolysed iodine is formed at the positive electrode
complete and balance the half equation for the formation of iodine
........ I- = I2 + ........ e-

3) what is formed at the negative electrode when sodium iodide solution is electrolysed
explain why

Answers

the solution conducts electricity because it has free delocalized which are free to move.

What is the chemical equation for the burning of propane if all the products and reactants are in the gas phase?4H2O(g) + 3CO2(g) + 5O2(g) → C3H8(g)

C3H8(g) + 5O2(g) → 3CO2(g) + 4H2O(g)

C3H8(g) + O10(g) → 3CO2(g) + 4H2O(l)

4H2O(l) + 3CO2(g) → C3H8(g) + 5O2(g)

Answer - B -
C3H8(g) + 5O2(g) → 3CO2(g) + 4H2O(g)

Answers

Propane is a hydrocarbon and it will burn in presence of oxygen (it will undergo combustion) to give carbon dioxide and water (all in gas phase).

In presence of oxygen the carbon gets oxidized to carbon dioxide and hydrogen to water.

The general equation for a hydrocarbon undergoing combustion is

$CxHy(g) + (x+(y)/(4))O_(2) ---> xCO_(2)(g) +(y)/(2)H_(2)O(g)$

Here we are studying the combustion of propane so

x = 3

y = 8

Propane has molecular formula of C3H8

Therefore the balanced equation will be

$C3H8(g) + (3+(8)/(4))O_(2) ---> 3CO_(2)(g) +(8)/(2)H_(2)O(g)$

$C3H8(g) + 5O_(2) (g) ---> 3CO_(2)(g) + 4H_(2)O(g)$

Answer:

Explanation:

its right

The greenhouse effect A. is caused by pollution released into the atmosphere
B. does not occur naturally
C. is a naturally occurring process
D. needs to be reversed to save the planet

Answers

The greenhouse effect C. is a naturally occurring process. What many people fail to realize is that the greenhouse effect is what keeps our Earth warm and habitable for us to live on. Without the greenhouse effect, the Earth would be colder and would not be able to sustain life.

What is a periodic element that is named after Einstein?

Answers

einsteinium, atomic number 99

Einsteinium is a synthetic element with symbol Es and atomic number 99. It is the seventh transuranic element, and an actinide. Einsteinium was discovered as a component of the debris of the first hydrogen bomb explosion in 1952, and named after Albert Einstein.

Compare and contrast quantitative and qualitative data.

Answers

quantitative data is based on the numbers in an observation. for example: there were 40 apples. qualitative data does not contain numbers. it is based off of straight facts and what you can see or touch

Answer:

qualitative data—deals with characteristics or qualities expressed in words; displayed in circle and bar graphs

quantitative data—deals with quantities expressed in numbers; displayed with circle, bar, and line graphs as well as histograms and scatterplots

Explanation:

Which element can become stable by losing 1 electron

Answers

any element in group 1 eg:
Lithium, Sodium, Potassium, Rhubidium, Caesium, Francium

Hope this helps :)

lithium
sodium
potassium
rubidium

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