The term "atom" comes from the Greek word for indivisible, because it was once thought that atoms were the smallest things in the universe and could not be divided. We now know that atoms are made up of three particles: protons, neutrons and electrons — which are composed of even smaller particles, such as quarks

3 0

3 years ago

The radius of an atom of gold is 1.35 angstrom how many would have to be lined up to span 1.0 mm

Fed [463]

<span>(1.35 x 2 x 10^-10 m/atom) = 2.0 x 10^7 atoms</span>

8 0

4 years ago

A rigid cylinder is filled with 100 mL of nitrogen gas at 25°C and a pressure of 1.00 atm. What will the pressure of the gas be

Ostrovityanka [42]

4 atm
100mL *1 atm= 25mL*Pressure

6 0

3 years ago

HELPP ME PLEASE!! What would be the density of a 40 g object that displaces 10 ml of water?

Snezhnost [94]

Answer:

<h2>The answer is 4.0 g/mL</h2>

Explanation:

The density of a substance can be found by using the formula

$density = \frac{mass}{volume} \\$

From the question

mass = 40 g

volume = 10 mL

The density of the object is

$density = \frac{40}{10} = 4 \\$

We have the final answer as

Hope this helps you

5 0

3 years ago