We have the right to calculate the coin"s density by utilizing the formula:density = fixed / volumeThen, we will certainly compare the experimental value indigenous real thickness of silver, if that is equal then, the coin is pure, if the is not, climate it is unpureHope this helps!

You are watching: How can you determine that a coin is not pure silver if you know the mass and volume of the coin

Hydrophobic molecules often tend to it is in nonpolar molecule that group together to type micelles fairly than it is in exposed to water. Hydrophobic molecules commonly dissolve in nonpolar solvents (e.g., essential solvents).

A 85.2 g copper bar to be heated to 221.32 degrees Celsius and also placed in a coffee cup calorimeter containing 4250 mL of water in ~ 2

yellowcomic.com:- 64015 J

Solution: over there is 4250 mL of water in the calorimeter in ~ 22.55 level C.

density of water is 1 g every mL.

So, the mass of water =

= 4250 g

Final temperature that water after adding the hot copper bar to it is 26.15 degree C.

So,

for water = 26.15 - 22.55 = 3.60 level C

Specific warm for water is 4.184

The heat obtained by water is calculated by making use of the formula:

where, q is the warm energy, m is mass and c is particular heat.

Let"s plug in the values in the formula and do the calculations:

q = 64015 J

So, 64015 J of heat is acquired by the water.

5 0
6 month ago

You have the right to study reaction prices to yellowcomic.com i beg your pardon of the adhering to questions? will certainly the reaction go to completion? will the reaction o
mart <117>
You can study reaction rates to yellowcomic.com : How can the reaction it is in slowed downwhen we"re talking around "rates", we"re talking around the speed of the reaction, which measure the quantity of times the reactant needed to produce the preferred effecthope this helps
5 0
1 year ago

Jack walks outside in the afternoon and also noticed the clouds are really dark. He says that that looks favor it will rain very soon. H
Kay <80>

yellowcomic.com:

I think it would certainly be A but it could be B you re welcome tell if wrong

7 0
1 year ago

Which is an endothermic process? A. The procedure in which a substance loses heat power B. The procedure in i beg your pardon a substance loses
pentagon <3>

yellowcomic.com:

D. The process in i m sorry a problem gains energy

Explanation:

An endothermic reaction is a reaction in i beg your pardon heat power is took in from the surroundings because of this we deserve to imply that in such reaction, the substances gains energy. In endothermic reactions, the neighboring becomes cooler at the finish of the changes.

Here, the heat power level that the final state is greater than the of the initial state. Most dissolution reactions room endothermic in nature. Examples are resolution of salt chloride in water.

Note: that is in exothermic reaction the heat power is liberated to the neighboring

5 0
5 months ago
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