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Firlakuza [10]
3 years ago
10

What is the box diagram for periodic elements?

Chemistry
2 answers:
olya-2409 [2.1K]3 years ago
7 0
The boxed diagram name is known as the Periodic Table of Elements in which elements are periodically organized by their atomic number.
VMariaS [17]3 years ago
5 0
It's the Periodic Table of Elements.

Hope this helps !

Photon
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Sally's teacher tells her to find the masses of a sugar cube and a glass of water. Sally finds the masses to be 10 g for the sug
Kisachek [45]
110 grams, the law of conservation of mass states that matter can not be created nor destroyed so putting sugar into water does not make it disappear
6 0
3 years ago
Read 2 more answers
Calculate the number of moles in 136g of ammonia
amm1812

Answer:

8moles

Explanation:

We are given the mass of ammonia to be 136g

  Ammonia = NH₃  

Let us find the number of moles in ammonia;

 Number of moles  = \frac{mass}{molar mass}  

  Molar mass of ammonia = 14 + 3(1) = 17g/mol

so;

   Number of moles  = \frac{136}{17}   = 8moles

6 0
3 years ago
Чому вирівнювання хімічних рівнянь є обов´язковим
Sav [38]

what is your question?

plz ask in English language

3 0
3 years ago
Calculate the number of moles of an ideal gas if it occupies 1750 dm3 under 125,000 Pa at a temperature of 127 C.
Phoenix [80]

Hey there!


* Converts 1750 dm³ in liters :


1 dm³ = 1 L so 1750 dm³ = 1750 liters



* Convertes 125,000 Pa in atm :


1 Pa = 9.86*10⁻⁶ atm so 9.86*10⁻⁶ / 125,000 => 1.233 atm


* Convertes 127ºC in K :


127 + 273.15 => 400.15 K


R = 0.082 atm.L/mol.K


Finally, it uses an equation of clapeyron :


p * V = n * R * T


1.233 * 1750 = n * 0.082 * 400.15


2157.75 = n * 32.8123


n = 2157.75 / 32.8123


n = 65.76 moles



hope this helps!



5 0
3 years ago
Read 2 more answers
A student writes the following explanation of how certain molecules are formed.A process is used to chemically link smaller unit
tensa zangetsu [6.8K]

Answer:

polymerization

Explanation:

Student is explaining the process of formation of a polymer and the process is called polymerization.

Polymer is made up of joining repeating units. The repeating units are called monomers.  

Properties of the polymer is determined by the structure of monomer molecule.

For example, consider a well-known polymer Teflon.is made by the polymerization of tetrafluoroethane.  

Thus, the student is explaining polymerization.

8 0
3 years ago
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