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2 years ago

What can change depending on the number of protons in an atom?

Chemistry

2 answers:

Rudiy272 years ago

7 0

Answer:

The element of the atom.

Explanation:

The number of protons confirms what element is the atom.

zvonat [6]2 years ago

6 0

Answer:

The type of atom

Explanation:

If you add a proton to a hydrogen atom, then it is no longer hydrogen, it is lithium

Hope this helps

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A certain substance X has a normal freezing point of -6.4 C and a molal freezing point depression constant Kf= 3.96 degrees C.kg

Brut [27]

Answer: $1.0\times 10^2g$

Explanation:

Depression in freezing point is given by:

$\Delta T_f=i\times K_f\times m$

$\Delta T_f=T_f^0-T_f=(-6.4-(13.6))^0C=7.2^0C$ = Depression in freezing point

i= vant hoff factor = 1 (for non electrolyte like urea)

$K_f$ = freezing point constant = $3.96^0C/m$

m= molality

$\Delta T_f=i\times K_f\times \frac{\text{mass of solute}}{\text{molar mass of solute}}\times \text{weight of solvent in kg}}$

Weight of solvent (X)= 950 g = 0.95 kg

Molar mass of non electrolyte (urea) = 60.06 g/mol

Mass of non electrolyte (urea) added = ?

$7.2=1\times 3.96\times \frac{xg}{60.06 g/mol\times 0.95kg}$

$x=1.0\times 10^2g$

Thus $1.0\times 10^2g$ urea was dissolved.

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2 years ago

What can change depending on the number of protons in an atom?​

What can change depending on the number of protons in an atom?