Answer:
Two slender woolen sweaters are hotter than a thick woolen sweater in light of the fact that there is a layer of air between them that doesn't permit our body warmth to get away yet it likewise it doesn't retains heat from the climate and fleece is additionally a protector that itself doesn't permit our body warmth to get away
The question is incomplete,the complete question :
Calculate the molality of a 10.0% (by mass) aqueous solution of hydrochloric acid:
a) 0.274 m
b) 2.74 m
c) 3.05 m
d) 4.33 m
e) the density of the solution is needed to solve the problem
Answer:
The molality of a 10.0% (by mass) aqueous solution of hydrochloric acid is 3.05 mol/kg.
Explanation:
10.0% (by mass) aqueous solution of hydrochloric acid.
10 grams of HCl is present in 100 g of solution.
Mass of HCl = 10 g
Mass of solution = 100 g
Mass of solution = Mass of solute + Mass of water
Mass of water = 100 g - 10 g = 90 g
Moles of HCl = 
Mass of water in kilograms = 0.090 kg
Molality = 
The molality of a 10.0% (by mass) aqueous solution of hydrochloric acid is 3.05 mol/kg.
Yes if you build it right it could easily work, i suggest using tape or rope if it's allowed to help support the structure....
Answer:
Among the given options which one best suits the definition of an element?
Explanation:
Element:
Element is the pure form of matter which cannot be broken down into new simpler substances either by physical or chemical means.
It is made up of the same type of atoms.
For example:
Copper, silver, gold, oxygen, etc.
Among the given options:
the third option that is elements are made of atoms is the correct option.
Remaining statements:
Elements are made up of complex chains of carbon and oxygen is wrong,
Elements can be broken down into other simpler substances is wrong.
Because we don't get any simpler substances from elements.
For example, if we break a gold rod many times also only its size varies and no new substance is obtained from it.
All elements have the same chemical properties is a wrong statement.
Because each element is unique and it has its own properties.
Answer:
Explanation:
All the stars we see in the night sky are in our own Milky Way Galaxy. Our galaxy is called the Milky Way because it appears as a milky band of light in the sky when you see it in a really dark area.
