Answer:
Explanation: the number of circles in the electronic configuration of an element is represented in the periodic table as the period number that element is situated in. the number of electrons in the outermost shell of an element is represented in the periodic table as the group number that element is situated in.
Answer:
T = 694 K
Explanation:
Given the following data:
V= 3.74 L
mass = m = 4.17 g
P = 3020 mmHg x 1 atm/760 mmHg= 3.97 atm
We use the ideal gases equation to calculate the temperature (T):
PV= nRT ⇒ T= PV/nR
We calculate n (number of moles of methane gas) by dividing the mass into the molar mass of methane (CH₄):
molar mass(CH₄) = MM = (1 x 12 g/mol)+ (4 x 1 g/mol) = 16 g/mol
n = m/MM= 4.17 g/(16 g/mol)= 0.261 mol
Finally, we calculate T:
T= PV/nR = (3.97 atm x 3.74 L)/(0.261 mol x 0.082 L.atm/K.mol) = 694 K
As has an atomic number of 33, so it has 33 protons.
It has a charge of 3-, so there are three more electrons than protons. Thus, there are 36 electrons.
It has a mass of 75, which is the sum of neutrons and protons.
33+n=75 ---> n = 75 - 33 = 42 neutrons
The answer is e) 33 protons, 42 neutrons and 36 electrons.
I am not 100% sure, but it might be tremendous heat applied...
Plz thank!
Answer:
Total we want 48 titanium to make 12.0moles