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
Bess [88]
3 years ago
13

What are some elements that can exist in room temperature?

Chemistry
1 answer:
SOVA2 [1]3 years ago
7 0
Most chemical elements are solid at room temperature. Some elements exist as gases but only two elements, mercury (Hg) and bromine (Br) are liquids at room temperature (approx 25oC). Hope this helped you!
You might be interested in
If atoms are made up smaller parts such as electrons, why are atoms considered the basic unit of matter
julsineya [31]
They are considered the basic units of matter because all mass is made of atoms.
4 0
3 years ago
Carbon diselenide (CSe2) is a liquid at room temperature. The normal boiling point is 125°C, and the melting point is –45.5°C. C
Tema [17]

Answer:

Explanation:  The strengths of the inter molecular forces varies as follows -

        CO_{2}< CS_{2} < CSe_{2}

The normal boiling point of CSe2 is 125°C and that of CS2 is 116°C, which explains the trend that as we move down the group, the boiling point of e compound increases as the size increases.

This usually happens because larger and heavier atoms have a tendency to exhibit greater inter molecular strengths due to the increase in size . As the size increases, the valence shell electrons move far away from the nucleus, thus has a greater tendency to attract the temporary dipoles.

And larger the inter molecular forces, more tightly the electrons will be held to each other and thus more thermal energy would be required to break the bonds between them.

5 0
3 years ago
The fuel used to power the booster rockets on space shuttles is a mixture of aluminum metal and ammonium perchlorate. The follow
pishuonlain [190]

Answer:

Therefore 373 mole of Al produce 746 mole of water.

Explanation:

Given reaction is

3 Al+3NH₄ClO₄→Al₂O₃+AlCl₃+3NO+6H₂O

From the above reaction it is clear that 3 mole of Al produce 6 mole of water.

Therefore

3 mole of Al produce 6 mole of water.

1 mole of Al produce \frac{6}{3} mole of water.

373 mole of Al produce \frac{6\times 373}{3} mole of water.

                                      = 746 mole of water.

Therefore 373 mole of Al produce 746 mole of water.

7 0
3 years ago
Which of the following equations has the correct products and is balanced correctly for a reaction between Na3PO4 and KOH?
ASHA 777 [7]

The answer is: A) Na3PO4 + 3KOH → 3NaOH + K3PO4, because K retains the same charge throughout the reaction.

This chemical reaction is double displacement reaction - cations (K⁺ and Na⁺) and anions (PO₄³⁻⁻ and OH⁻) of the two reactants switch places and form two new compounds.  

Na₃PO₄ is sodium phosphate.  

KOH is potassium hydroxide.  

NaOH is sodium hydroxide.  

K₃PO₄ is potassium phosphate.  

According to the mass conservation law, there are same number of atoms on both side of balanced chemical reaction.

5 0
3 years ago
what method can be used to separate parts of liquid mixture wwhen the entire mixture can pass through a filter
KIM [24]
The method that can be used to separate the mixture is DISTILLATION.
Distillation is a separating technique that is used to separate mixture of liquids which have boiling points that are far apart. The mixture will be heated, the liquid with the lowest boiling point will boil over and can be collected over a condenser, thus separating the two liquids.
5 0
3 years ago
Read 2 more answers
Other questions:
  • Which coefficients are required to correctly balance this equation? C2H2+O2 CO2+H2O
    9·1 answer
  • What are the kingdoms of eukaryotes
    12·1 answer
  • If the [H+] in a solution is 1 x 10^-1 mol/L, what is the [OH-]? Show your work, please i need help
    14·1 answer
  • What is the oxygen number of N in NO2-¹​
    12·1 answer
  • The soda was cold before it was placed in the koozie. the koozie...
    12·2 answers
  • Which is an example of a double
    6·1 answer
  • Explain the<br> purpose<br> of the heat exchanger in the nuclear power plant.
    8·2 answers
  • What makes a substance a good insulator
    9·1 answer
  • which of the basic ideas of dalton's Atomic Theory is an extension of what the Greeks believed about atoms?
    5·1 answer
  • How can the actions of people affect runoff and absorption in a positive way? How do they affect them in a negative way?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!