How does the density of a hershey bar compare to the density of the a half bar?

Answers

Answer 1

Answer:

The density would be the same for the whole bar as well as one half of the bar. Density is a identity I believe, by this I mean that it stays the same no matter how little or how much of the same substance you have. Since density = mass / volume, half the bar has half of the weight as well as half of the volume of the whole bar, making the density the same.

For example, a block weighs 10 grams and has a volume of 5 ml. the density would be d = 10/5 or, d = 2g/ml

Half of the block weighs 5 grams and has a volume of 2.5 ml. The density is d = 5/2.5, or, d = 2 g/ml.

See, although there are different amounts of the same substance, their density is the same.

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Did you know you have to answer 1000 questions to be able to message someone?

To make salt water a heterogeneous mixture, you would have toA) add sand.
B) add a small amount of sugar.
C) boil the water.
D) remove the salt.

Answers

Ans A) add sand
because sand is insoluble, it will make the solution heterogeneous

Answer:

A. Add sand

Explanation:

A mixture in which particles are not uniformly distributed throughout the solution then it is known as a heterogeneous mixture.For example, sand in water is a heterogeneous mixture.Where as a mixture in which particles are evenly distributed throughout the solution then it is known as a homogeneous solution.For example, salt in water is a homogeneous solution. This, is why we can conclude that to make salt water a heterogeneous mixture, you would have to add sand.

Hopefully this answers your question.

Air is a mixture whereas water is a compound explain

Answers

Answer:

Mixture is a substance which has two or more components which do not combine chemically and do not have any fixed ratio in which they are present. Example: Air

Compound is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.It can be decomposed into simpler constituents using chemical reactions. Example: water $H_2O$

Air is a mixture of various gases , dust particles and water vapors which do not react chemically and thus the constituents retain their chemical properties. Water is a compound which is formed by chemical combination of hydrogen and oxygen which lose their individual chemical properties.

Air is a mixture as in it has different types of gases mixed in the air such as Nitrogen, Oxygen, and Carbon Dioxide, but none of these are bonded or fused together. Water is a compound of 1 Oxygen and 2 Hydrogen molecules bonded together, as in permanently together. You can think of Air as a bowl of trail mix, everything in there is separable, and a compound as in something inseparable (Unless done using scientific methods).

Fun facts about Uranus the planet?

Answers

7th planet from the sun
Found in 1781
Takes 84 Earth years to travel around the sun
It's the coldest planet.
ONLY ONE spaceship has flown by it.

it is one of the coldest planets
seventh planet from the sun
it is turned over and rotates on its side
it is the first planet discovered in modern age
a day in the north pole of Uranus is 84 years
it has 27 moons
it has rings
it can be seen without a telescope or binoculars
it is named after the Greek god of the sky

this is all I can I know

Twelve grams of carbon-12 atoms is defined asA) one mole
B) a molar volume
C) the mole ratio
D) Avogadro's number

Answers

Hey there!

Molar mass is the mass of one mole of the substance.

The molar mass of carbon-12 is 12 grams, because this is the mass of one mole of the substance.

This means the answer is a) one mole.

Hope this helps!

Answer:A

Explanation:

Are the following physical or chemical changes.1.Lighting a match
2.Cooking waffles
3.Baking a cake

Answers

They are all chemical changes. Think of a chemical change as you can never get something back to the way it was. (A lit match can't be turned back into a new one, waffles can't be turned back into waffle mix, and a cake can't be turned back into cake batter.)

Physical change would be something like slicing cheese or evaporating water. (The sliced cheese is still cheese, and the water turns into steam which can then be turned back into a liquid and it's still water - just in the air.)

chemical reactions because the chemical formula is changed in the reaction

Suppose 1 gold bar is 6 cm long, 2 cm high, and 3 cm wide. How many whole gold bars will you be able to fit in a vault with a volume of 500 cm3?A.
13 bars
B.
27 bars
C.
41 bars

Answers

That would be 13 bars

A. 13 bars

the correct answer is A. because 1 gold bar's volume is 36cm so what you do is divide 500cm into 36cm and the answer is 13.8888889 bars would have the volume of 500cm so the approximate answer is 13 bars

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