Answer:
a state of matter created when particles, called bosons, are cooled to near absolute zero (-273.15 degrees Celsius, or -460 degrees Fahrenheit).
Explanation:
hope this helps
pls mark brainliest
 
        
             
        
        
        
Answer: A. 490.48mol
Explanation:
Using the ideal gas equation; PV =nRT
where P = Presssure = 200 atm
           V = Volume = 60L
           n = Number of moles
           R = Gas constant = 0.08206 L.atm/mol/K
           T = Temperature = 25 °C  + 273 = 298K
Make "n" the subject of the formular;
 n =  PV /  RT
    =  200   x    60   /    0.08206 x  298
    =  490.73  mol, which is closest to  option A. 490.48mol
 
        
             
        
        
        
Answer:
BaF2(s) ------> Ba2 (aq) + 2F- (aq)
Explanation:
Entropy refers to the degree of disorderliness in a system. Processes that lead to greater disorderliness in a system are said to increase the entropy of the system or lead to a positive value of ΔS.
If we consider the process, BaF2(s) ------> Ba2 (aq) + 2F- (aq), we will notice that ions were produced in solution thereby increasing the disorderliness of the system.
 
        
             
        
        
        
Answer:
5.92 g
Explanation:
Convert milliliters to liters.
217 mL = 0.217 L
Since molarity (M) is moles per liter(mol/L), multiply the molarity by the volume to find out how many moles you will need.
0.217 L × 0.246 M = 0.05338 mol
Now, convert the moles to grams using the molar mass.  The molar mass of calcium chloride is 110.98 g/mol.
0.05338 mol × 110.98 g/mol = 5.924 g ≈ 5.92 g
You will need 5.92 g of calcium chloride.
 
        
             
        
        
        
  The  volume   of  the brick  in cubic   meters  is 0.00108 m³
  <u><em>calculation</em></u>
<u><em> </em></u> volume of a brick  =length  x  width   x  height
 -length = 15 cm
width = 6.0 cm
height = 12 cm
 volume is therefore= 15 cm x 6.0 cm   x 12 cm =1080 cm³
convert  1080 cm³ into m³
that  is  1 cm³  =  1  x 10^-6m³
         1080  cm³ = ? m³
by cross multiplication
=[ (1080 cm³  x 1 x10^-6 m³)  /  1 cm³]  =  0.00108 m³