Astudent places 15.0 ml of water in a graduated cylinder. she then places an object with an
into the same cylinder. the final volume now reads 20.0 ml
a. what is the volume of the unknown object?
. if the object has a mass of 23 g, what is its density to one decimal place? do not forget units. (density
mass/volume)

d = 4.6 g/mL

Explanation:

Volume of water = 15.0 mL

Final volume after placing object = 20.0 mL

Volume of object = ?

Mass of object = 23 g

Density of object = ?

Solution:

Volume of object = Total volume - volume of water

Volume of object = 20.0 mL - 15.0 mL

Volume of object = 5.0 mL

Density of object:

density = mass/ volume

d = m/v

d = 23 g/ 5.0 mL

d = 4.6 g/mL

answer

fusion: the energy source of stars. the energy released from the collapse of the gas into a protostar causes the center of the protostar to become extremely hot. when the core is hot enough, nuclear fusion commences. fusion is the process where two hydrogen atoms combine to form a helium atom, releasing energy.

hope it

може ли да зареждате повече информация, моля