7.) 3
8.) i think it's 2
9.) 3
Density = <u>mass
</u> volume
<u>
</u>For the sake of explanation, let's pretend the mass is 2g and the volume is 1 ml
<u>
</u>Density = <u>2 g </u>= 2 g/ml
<u /> 1 ml
Now if we increase the volume, and leave the mass the same then mass is still 2g, but we can increase the volume to 2 ml
Density = <u>2 g </u> = 1 g/ml<u>
</u> 2 ml
<u>
</u>Therefore we can say that <em>if volume increases and mass stays the same, then density will decrease</em>.<u>
</u>
I believe your answer is 40g 15*C I hope that helps.
