Answer:
7
Step-by-step explanation:
I’m not sure but if you go on jigga math and type this answer in people will answer
Answer:
4.2
Step-by-step explanation:
0.4+0.3=0.7
0.7x6=4.2
We have that the unit rate is 2 [Option B].
***Explanation***
We have that a proportional relationship is characterized for having the form:

Here a and b are the values that are proportional to one another and k is the constant of proportionality.
In our case we are given:

Here x & y are the proportional values and 2 is the constant of proportionality.
And, from properties of division, we have that:
Answer:
The second option or B
Step-by-step explanation:
The approximate total mass= number of atoms * weight of an atom.
The approximate total mass=3.06 10²³ atoms. (1.67 10⁻²⁴ grams/1 atom)=
=0.51102 g ≈ 0.51 g
Answer: the approximate total mass is 0.51 grams.