a scientist is creating a new synthetic material. the material’s density is 6.1 g/cm3. which sentences describe how the scientist can lower the material’s density? a)the scientist can decrease the mass while keeping the volume constant.
b)the scientist can increase the mass while keeping the volume constant.
c)the scientist can decrease the volume while keeping the mass constant.
d)the scientist can increase the volume while keeping the mass constant.

Explanation:

Density is defined as the amount of mass present in per unit volume of a substance.

Mathematically,       Density =

Since, density is directly proportional to mass. Hence, when we increase the mass then there will be increase in the density of material. But when we decrease the mass of a material the its density will decrease.

On the other hand, density is inversely proportional to volume. Therefore, an increase in volume of a material will lead to a decrease in its density.

Thus, we can conclude that following sentences describe how the scientist can lower the material’s density.

The scientist can decrease the mass while keeping the volume constant.The scientist can increase the volume while keeping the mass constant.

m=9

step-by-step explanation:

7m+8=71 subtract   8 from 71 which is 63 than divide it by 7m   equal 9.

                             

For cyclohexane compounds drawn in a chair conformation:   -axial bonds are vertical  -equatorial bonds are parallel to two bonds within the ring.  thus, as i assume the chair conformation is drawn:   -the x group is in an axial position, as are the five other vertical bonds.  -three axial bonds are on the top face of the ring  -the other three axial bonds are on the bottom face  the position of the second substituent on each ring carbon is equatorial.  gauche groups must be on an adjacent carbon such as carbon 6 and carbon 2, and also gauche groups are rotated by 60 degrees relative to each other.  drawing the newman projections for c1–c2 and c1–c6 aids in visualizing the groups that are gauche to the y group on c1.  click this link and watch some academic videos that may you more understand the topic