Answer:
C
Explanation:
The two hydrogen atoms and one oxygen atom within water molecules form polar covalent bonds.
Water molecules do not have a net charge, but the polarity of water creates a slightly positive charge on hydrogen and a slightly negative charge on oxygen.
According to Newton's third law, forces come in pairs. There is action-reaction force and an equal (in size - action force) and opposite in direction (reaction force).
<u>Explanation:</u>
On the off chance, when item A applies a force on item B, at that point item B must apply a force of equivalent size and inverse bearing back on object A. This Newton's third law speaks to a specific balance in nature: forces consistently happen two by two.
And, one body can't apply a force on another without encountering a force itself. Now and again, allude to this law freely as activity response, where the force applied is the activity and the force experienced as a result is the response.
Answer:
V of Sulfur tetrafluoride is 17.2 L
Explanation:
Given data;
T = -6°C = 267K [1° C = 273 K]
n = 786 mmol of SF4 which is 0.786 mol
P = 1 atm
from ideal gas law we have
PV = nRT
where n is mole, R is gas constant, V is volume
V of Sulfur tetrafluoride is 17.2 L
Answer: Index fossil correlation
Relative dating refers to the age estimation method in which the order of the past events is determined to compare the age of an object, rock or organism with the respect to the other. This method gives the estimated or approximate age of the entity under consideration. It does not give the absolute age. Index fossils are the fossils which are found in a particular geological time. They have a short life span and wide geographical distribution. These fossils can be used to determine the relative age. As, these fossils can be compared with the layers of strata and rocks, where they are found, to know their approx age.
C: Sodium
<span>this element must be stored in oil because of its reactivity.
The rest of them don't have to be stored in oil.</span>