Answer:
0.07 M
Explanation:
Given data:
Volume of H₂SO₄ = 35.00 mL (35/1000 = 0.035 L)
Molarity of KOH =0.1222 M
Volume of KOH = 42.22 mL (42.22/1000 = 0.0422 L)
Molarity /concentration of H₂SO₄ = ?
Solution:
Chemical equation:
H₂SO₄ + 2KOH → K₂SO₄ + 2H₂O
Number of moles of KOH:
Molarity = number of moles / volume in L
0.1222 M = number of moles / 0.0422 L
0.0422 L×0.1222 M = number of moles
Number of moles = 0.005 mol
Now we will compare the moles of KOH with H₂SO₄ from balance chemical equation.
KOH : H₂SO₄
2 : 1
0.005 : 1/2×0.005 = 0.0025 mol
Concentration of H₂SO₄:
Molarity = number of moles / volume in L
Molarity = 0.0025 mol / 0.035 L
Molarity = 0.07 M
The moles of I2 that will form 38.58g of Ni3 is 0.147 moles
calculation
write the equation for reaction for formation of Ni3 from I2 and N2
that is 3I2 + N2 = 2NI3
find the moles of Ni3 formed = mass/molar mass
= 38.58g/ 394.71 g/mol = 0.098 moles
by use of mole ratio between I2 to NI3 which is 3 :2 the moles of I2
= 0.098 x3/2 = 0.147 moles
Answer:
The middle ear is the portion of the ear internal to the eardrum, and external to the oval window of the inner ear. The mammalian middle ear contains three ossicles, which transfer the vibrations of the eardrum into waves in the fluid and membranes of the inner ear.
Explanation:
Answer:
I believe for living things it is released as heat.
but In physics, potential energy is the energy held by an object because of its position relative to other objects, stresses within itself, its electric charge, or other factors. Common types of potential energy include the gravitational potential energy of an object that depends on its mass and its distance from the center of mass of another object, the elastic potential energy of an extended spring, and the electric potential energy of an electric charge in an electric field.
Explanation:
hope that helps