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Marta_Voda [28]
3 years ago
8

12.25ml of significant digits

Chemistry
1 answer:
Troyanec [42]3 years ago
4 0

Answer:

4 significant figures

Explanation:

____

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Enrico Fermi (1901-1954) was a famous physicist who liked to pose what are now known as Fermi problems in which several assumpti
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Answer:.

Explanation:

6 0
4 years ago
Water's heat of fusion is 80. cal/g , its specific heat is 1.0calg⋅∘C, and its heat of vaporization is 540 cal/g . A canister is
dem82 [27]
Refer to the diagram shown below.

State 1:
The heat of fusion is required for the ice to become water.
The amount of heat required is
Q₁ = (330 g)*(80 cal/g) = 26,400 cal

State 2:
Sensible heat is required to raise water at 0 C to the boiling point of 100 C.
The heat required is
Q₂ = (430g)*(1 cal/(g-C))*(100 C) = 43,000 cal

State 3:
The heat of vaporization is required to boil off the water.
The heat required is
(430 g)*(540 cal/g) = 232,200 cal

Total heat absorbed is
Q₁+Q₂+Q₃ = 301,600

Answer: 301,600 cal  or 301.6 kcal

7 0
4 years ago
When you balance a redox equation using the half-reaction method, what do you do after you balance the atoms and charges
bezimeni [28]
When you balance a redox equation using the half-reaction method, after balancing the atoms and the charges, we then add the two half reaction in order to show the overall redox reaction. From the overall reaction, we would see every compound that is involved in the reduction and oxidation of the oxidation states.
7 0
4 years ago
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The freezing point of pure chloroform is -63.5°C, and its freezing point depression constant is 4.07°C•kg/mol. If the freezing p
Nady [450]

Answer:

-20.22

Explanation:

4 0
3 years ago
Viết các PTHH sau CuO + h20
attashe74 [19]

Answer:

An oxidation-reduction (redox) reaction is a type of chemical reaction that involves a transfer of electrons between two species. In redox reaction the oxidation number of a molecule, atom, or ion changes by gaining or losing an electron.

In the reaction : CuO+H  

2

​

⟶Cu+H  2 O  

n the reaction H2

​

  is oxidized since it has lost electrons and Cu is reduced since it has gained electrons.

Explanation:

hope this helps

6 0
3 years ago
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