Answer:
d. usually neutral
Explanation:
The overall charge of an ionic compound is usually neutral.
There is no net charge on the compound formed by an ionic bond due to the electrical stability that is derived from this bond association.
In an ionic bond, a metal transfers some of its electrons to a non-metal. The metal is electropositive and the non-metal is electronegative.
Therefore, the result is that two ions are produced which attracts each other with an electrostatic force.
Answer:
Approximately 
.
Explanation:
Let 
denote the gravitational constant. (
.)
Let 
and 
denote the mass of two objects separated by 
.
By Newton's Law of Universal Gravitation, the gravitational attraction between these two objects would measure:
.
In this question: 
is the mass of the moon, while 
is the mass of the water. The two are 
apart from one another.
Important: convert the unit of to standard units (meters, not kilometers) to reflect the unit of the gravitational constant .
.
.
B. Venus hope this helps have a great day
Well, the thing is: we don't really know, as we don't even know how many species there are on earth.
If we take a look at the estimates of <span>World Wide Fund for Nature, an organization that works toward combating species extinction, their estimates vary from 200 to 100 000 - but a probable number is 20 000 (d). </span>
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