Aneutral atom always contains the same number of

Explanation:

Neutral means that the net charge is zero.

Atoms have protons, neutrons and electrons.

Neutrons and protons are in the nucleus of the atom. Protons are particles with positive charge and neutrons are particles without charge.

Elctrons, which are surrounding the nucleus, are particles with negative charge.

The relativie charges of protons and electrons are +1 and -1, respectively.

So, in order to have a total net charge of zero, the neutral atom must have the same number of protons as electrons.

what is the general relationship between a galaxy's distance from earth and its speed?

the answer is:

the farther away a galaxy is from us, the faster it is moving away from us.

number of molecules / avogadro's number * molecule molecular = mass

explanation:

we define a gram-molecular weight as the mass of one mole of any element or compound. a mole contains avogadro's number of units (molecules) –  

6.022

x

10

23

. so, dividing the number of molecules by avogadro's number gives us the number of moles. multiplying that by the molecular weight gives us the mass. from the periodic table we find the gram-molecular weight of u to be238 and of f to be19. so,  

u

f

6

will have a gram-molecular weight of 352g.