17. A cannonball made of iron has a volume of 115 cm^3. If iron has a density of 7.86 g/cm3, what is the mass in grams of the cannonball?
O 14.6 g
0.01 kg
0.9 g
904 g

help i don't know the answer

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

From the question we have

mass = 7.86 ×115 = 903.9

We have the final answer as

Hope this helps you

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

            and  

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be and .  

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.  

frequency, z, and the collision density, z, in carbon dioxide (co2), r 180 pm at 30 °c and 120 kpa