1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Eduardwww [97]
3 years ago
10

Lanthanides and actinides together are known as

Chemistry
1 answer:
olga_2 [115]3 years ago
7 0
Inner transition elements
You might be interested in
A 0.63 mole sample of CO2 is in a 750 mL container. What is the pressure of the gas in torr when the has is held at -35.6oC?
kipiarov [429]

Answer:

12426torr

Explanation:

The following data were obtained from the question:

n = 0.63 mole

V = 750mL = 750/1000 = 0.75L

T = -35.6°C = -35.6 + 273 = 237.4K

R =0.082atm.L/Kmol

P =?

Using the ideal gas equation PV = nRT, the pressure can be obtained as follows:

PV = nRT

P = nRT/V

P = (0.63 x 0.082 x 237.4)/0.75

P = 16.35atm

Now let us convert this pressure (i.e 16.35atm) to a pressure in torr. This is illustrated below:

1atm = 760torr

16.35atm = 16.35 x 760 = 12426torr

Therefore, the pressure of the gas is 12426torr

4 0
3 years ago
Read 2 more answers
Calculate each of the following quantities:
aleksley [76]

The mass of 2.88 × 10²² molecules of Bi (NO₃)₃ is 678.854 grams.

<h3>What is mass?</h3>

Mass is the quantity of matter in a physical body. Mass can be calculated by dividing the molar mass by the mass of the moles of the substance.

The molar mass of Bi (NO₃)₃ is 1461.99 g/mol

The molecules here is 2.88×10²²

The number of molecules will be divided by 6.023 x 10²³

2.88×10²² /  6.023 x 10²³ = 4.781 moles

Putting the value in the equation

mole = mass/molar mass

mass = moles x molar mass

4.781  x 1461.99  = 678.854 grams

Thus, the mass of 2.88×10²² molecules of Bi (NO₃)₃ is 678.854 grams

To learn more about mass, refer to the link:

brainly.com/question/9909261

#SPJ4

8 0
2 years ago
A mineral that has no planes of weakness in its lattice structure will not break along planes. Which term is appled to the way i
Pie
The answer for this question should be B) Cleavage or the second option.
5 0
3 years ago
Read 2 more answers
Burning a candle melts the wax, but also burns the wick. Explain how burning a candle involves both physical and chemical change
k0ka [10]

Answer:

Burning of the candle is both physical and chemical change. Burning of the candle melts the wax and hence physical state of wax has changed from solid to liquid.  

Again the wax combines with the atmospheric oxygen and changes to carbon dioxide, heat and light.  

Thus both the changes are accompanied by the burning of the candle.

Explanation:

hope this helps!

~mina

3 0
3 years ago
Is it possible to transfer heat from a cold reservoir to a hot reservoir?
tankabanditka [31]

Answer is: B.) Yes, if work is done, this transfer process can take place.

For example,  air conditioner involves a cyclic process that transfers heat from a cold reservoir to a hot reservoir, but with use of electricity.

Thermal conductuction is the transfer of heat through physical contact. Thermal conduction is the transfer of heat by microscopic collisions of particles. Heat spontaneously flows from a hotter to a colder body.

The process of heat conduction depends on four basic factors: the temperature gradient, the cross section of the materials involved, their path length and the properties of those materials.

8 0
4 years ago
Read 2 more answers
Other questions:
  • A jet engine might use _____.
    9·2 answers
  • In the molecule SCl₂, sulfur makes two covalent bonds. Therefore, two of its six valence electrons need to be unpaired. The orbi
    11·1 answer
  • The only way to break the bonds in a compound is with a
    13·2 answers
  • How does distance change with time?
    12·1 answer
  • Which has the higher boiling point, C3H8 or C8H10? Explain your reasoning.
    5·1 answer
  • Sample with a density of 4.0g/cm^3 and 3.5g, find the volume
    6·1 answer
  • Anne adds granulated sugar to water and stirs it until all the sugar dissolves, leaving a sweet, transparent liquid. Under which
    11·1 answer
  • What is the name of two areas where rivers leave rich, fertile soil?
    15·1 answer
  • The nervous system involves actions that control
    13·2 answers
  • STATION 1
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!