Answer:
6 electrons
Explanation:
Nitrogen is a divalent gas (N2) in which each nitrogen atom contribute 3 electrons each, making a total of 6 electrons to form a triple bond between it's molecule(-N≡N-)
Answer : The correct match is:
(1) → (k)
(2) → (j)
(3) → (f)
(4) → (d)
(5) → (e)
(6) → (g)
(7) → (a)
(8) → (i)
(9) → (l)
(10) → (c)
(11) → (b)
(12) → (h)
Explanation :
Physical property : It is defined as a change in which the identity of substance does not change.
Physical change : It is defined as something observed while keeping the identity of the substance the same.
Homogeneous mixture : It is defined as something made up of at least two different substances and is usually very difficult to separate. Even distribution of particles.
Heterogeneous mixture : It is defined as something made up of at least two different substances and easily separated by physical means. Unequal distribution of particles.
Chemical property : It is defined as something observed by changing the identity of a substance.
Compound : It is defined as a pure substance made up of at leat two different elements.
Matter : It is defined as anything that has matter and takes up space.
Chemical change : it s defined as a change that creates a new substance or compound.
Extensive property : It is defined as a property that change with the amount of matter present.
Mass : It is defined as the amount of matter contained in an object.
Volume : It is defined as the amount of space a substance takes up.
Intensive property : It is defined as a property that does not change with the amount of matter present.
Answer:
Molarity of solution is 0.0049 M
Explanation:
Molarity of a solution is the ratio of number of moles of solute to volume of solution in Liter
Number of moles is the ratio of mass to molecular weight of a compound.
Here is the solute.
448 mg of = 0.448 g of
So, 0.448 g of = moles of = 0.00245 moles of
Total volume of solution = 500 mL = 0.5 L
So, molarity of solution =