Generally we have to kinds of conductors
a) metallic conductors: which conduct electricity due to free movement of electrons
b) electrolytic conductors: which conduct electricity due to movement of ions.
HCN is an electrolyte and is non conducting in pure state as it has no free ions or electrons
When HCN is dissolved in water it dissociates as
These ions obtained due to dissociation of HCN makes it conducting in nature.
The atomic mass of beryllium (Be) is 9 g/mole
Now, 1 mole of any substance contains avogadro's number of that substance. Therefore:
1 mole of Be contains 6.023 10^23 atoms of Be
In other words:
9 grams of Be contains 6.023*10^23 atoms of Be
Therefore, the mass corresponding to 9.76 * 10^12 atoms of Be is:
= 9 g * 9.76 10^12 atoms/6.023*10^23 atoms
= 1.458 * 10^-10 g (or) 1.46 * 10^-10 g
Answer:
The volume of water measured is 10mL
Explanation:
Given;
Mass of mass of beaker and the water = 23.670 g
Mass of empty beaker = 13.712 g
Then, mass of water only = Total mass of of beaker and the water minus Mass of empty beaker
mass of water only = 23.670 g - 13.712 g = 9.958 g
Density = mass/volume
Given density of water = 0.9982071 g/mL
Density of water = Mass of water/ Volume of water
Then, Volume of water = Mass of water/Density of water
Volume of water = 9.958 g/0.9982071 g/mL
Volume of water = 9.975886 mL ≅ 10mL
Therefore, The volume of water measured is 10mL
<h2>Answer:</h2>
An Aquifer
<h2>Explanation:</h2>
An aquifer is an underground layer of water-bearing permeable rock or unconsolidated materials like gravel, sand, or silt. The most common aquifers are unconsolidated sands and gravels, permeable sedimentary rocks such as sandstones or limestones and heavily fractured volcanic and crystalline rocks. All of these aquifers can be used for the purification of groundwater contaminated by sewage from a ruptured septic tank.
Answer:
The value of the gas equilibrium constant Kp is 18.3
Explanation:
Step 1: Data given
Kp= Kc(RT)^Δn
Temperature = 298 K
Kc = 18.3
Step 2: The balanced equation
C₄(s) + 4 O₂(g) ⇌ 4 CO₂(g)
Step 3: Calculate Kp
Kp= Kc(RT)^Δn
⇒with Kp = the gas equilibrium constant = TO BE DETERMINED
⇒with Kc = the equilibrium constant = 18.3
⇒R = the gas constant = 0.08206 L* atm/mol*K
⇒T = the temperature = 298 K
⇒Δn = mol gas phase product – mol gas phase reactant = 4-4 =0
Kp = 18.3 * (0.08206*298)^0
Kp = 18.3 * 1
Kp = 18.3
The value of the gas equilibrium constant Kp is 18.3
