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
Sonja [21]
3 years ago
9

Which of the following metals is in a liquid state at room temperature?

Chemistry
1 answer:
SpyIntel [72]3 years ago
5 0
The answer is c. hg (mercury)
You might be interested in
Explain why the population of trout might increase if the population of frogs decreased
castortr0y [4]
If the population of frogs decreased, an animal that eats frogs and trout will decrease because it's food source is declining. Then, since the predator population is declining, the trout population will increase. The trout will have less predators to worry about.

Hope this helps... mark as Brainliest plz
6 0
3 years ago
Suppose you were titrating approximately 0.1 m hcl solution with standardized naoh solution (0.0989m). in your lab manual, you w
Semenov [28]
It alwasys chages becuse of magical bull in chem. ask the chem godzzz im aright  
5 0
3 years ago
Read 2 more answers
Potassium nitrate has a lattice energy of -163.8 kcal/mol and a heat of hydration of -155.5 kcal/mol.
Brut [27]

Answer:

<em>293.99 g </em>

OR

<em>0.293 Kg</em>

Explanation:

Given data:

Lattice energy of Potassium nitrate (KNO3) = -163.8 kcal/mol

Heat of hydration of KNO3 = -155.5 kcal/mol

Heat to absorb by KNO3 = 101kJ

To find:

Mass of KNO3 to dissolve in water = ?

Solution:

Heat of solution = Hydration energy - Lattice energy

                           = -155.5 -(-163.8)

                           = 8.3 kcal/mol

We already know,

1 kcal/mol = 4.184 kJ/mole

Therefore,

= 4.184 kJ/mol x 8.3 kcal/mol

= 34.73 kJ/mol

Now, 34.73 kJ of heat is absorbed when 1 mole of KNO3 is dissolved in water.

For 101 kJ of heat would be

= 101/34.73

= 2.908 moles of KNO3

Molar mass of KNO3 = 101.1 g/mole

Mass of KNO3 = Molar mass x moles

                         = 101.1 g/mole  x  2.908

                         = 293.99 g

                         = 0.293 kg

<em><u>293.99 g potassium nitrate has to dissolve in water to absorb 101 kJ of heat. </u></em>     

4 0
3 years ago
PLEASE HELP ME WITH PHYSICAL SCIENCE!! PRETTY EASY QUESTION ​
Umnica [9.8K]

Explanation:

Bbbbbbbbbbbbbbbbbbbbb

7 0
3 years ago
Read 2 more answers
Gas is heated from 480. K to 750. K and the pressure is kept constant, what final volume would result if the original volume was
attashe74 [19]
Charles law gives the relationship between volume and temperature of gas.
It states that at constant pressure volume is directly proportional to temperature
Therefore
V/ T = k
Where V - volume T - temperature in kelvin and k - constant
V1/T1 = V2/T2
Parameters for the first instance are on the left side and parameters for the second instance are on the right side of the equation
Substituting the values in the equation
267 L/ 480 K = V / 750 K
V = 417 L
Final volume is 417 L
8 0
3 years ago
Other questions:
  • Which of these plants is cassini currently orbiting
    6·1 answer
  • Are ions present in a sample of P406? Explain
    5·1 answer
  • ) What is the definition of an enzyme? A.Enzymes are carbohydrate molecules that act as catalysts to speed up chemical reactions
    5·1 answer
  • What is the percent of Li in Li3N ? Please!!
    15·2 answers
  • The particles of longitudinal waves vibrate by pushing together and moving apart parallel to the direction in which the wave tra
    10·1 answer
  • A stretched rubber band is an example of:
    10·1 answer
  • bro can ya'll like not delete my questions if i say to jus talk? like ya'll clowns nd need to get a life like es 2021 y realment
    10·1 answer
  • Help what are the answers FAST
    8·2 answers
  • The growth of the plants that the animal used for food could not keep up with the needs of the population. there was so little f
    14·1 answer
  • Gaseous nitrogen dioxide dissolved in warm liquid water to form hno3 and gaseous nitrogen monoxide enter a balanced equation for
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!