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Ugo [173]
2 years ago
7

How many molecules of water are in 1.8 moles of water

Chemistry
1 answer:
Juli2301 [7.4K]2 years ago
3 0

The number of molecules in given amount of water is 10.8396 x 10 by the 23 power.

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(?)Li2O + (?)H2O → (?)LiOH
pav-90 [236]

Answer:

Li2O+H2O---->(2)LiOH

Explanation:

you have to balance the equation and not all the blanks have to be filled all the time but if it makes it easier for you in the first 2 question marks you can put a 1 which isnt necessary but if ur a visual person it will help.

hope this helps im litterally learning the same thing as u lol

6 0
3 years ago
A 50.00 g sample of an unknown metal is heated to 45.00°C. It is then placed in a coffee-cup calorimeter filled with water. The
AysviL [449]

Answer:- Heat lost by the metal is 279.45 cal.

Solution:- This type of problems are solved by using the concept, heat given = - heat taken

Metal temperature is decreasing from 45.00 degree C to 11.08 degree C. It means the heat is lost by the metal and this heat lost by metal is gained by water and the calorimeter to raise their temperature.

the equation we use is, q=mc\Delta T .

where, q is the heat energy, m is mass, c is specific heat and \Delta T is change in temperature.

Combined mass of calorimeter and water is 250.0 g and the specific heat is \frac{1.035cal}{g.^0C} .

\Delta T  for calorimeter and water (combined) = 11.08 - 10.00 = 1.08 degree C

\Delta T  for metal = 11.08 - 45.00 = -33.92 degree C

let's plug in the values in the above equation and calculate heat gained by combined system.

q=250.0g*\frac{1.035cal}{g.^0C}*1.08^0C

q = 279.45 cal

So, the heat lost by the metal is 279.45 cal.


3 0
3 years ago
Read 2 more answers
3. Solve the following problems. Work must be shown in order to earn credit.
madreJ [45]
C. A container of mixed gases is 20.9 C I hope this helps
4 0
2 years ago
What is seafood empanada? Explain?
Lyrx [107]
It’s an empanada but instead of one with chicken or cheese or beef or whatever you usually eat empanadas of, it has seafood usually they have shrimp or crab, I hope this helps!
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2 years ago
Which statement best describes how electrons till orbitals in the penodic table?
nordsb [41]

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Electrons fill orbitals in order of increasing orbital energy

Explanation:

Apex

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3 years ago
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