Answer:
Isotopes are variants of an element, where the number of neutrons is different but its number of protons stay the same.
Explanation:
If the number of protons had changed then it would just be a different element.
Electron number changing simply adds charge to the atom, and doesn't change it or anything.
PLS GIVE BRAINLIEST
Answer: The pressure of the gas is 0.34 atm
Explanation:
According to ideal gas equation:
P = pressure of gas = ?
V = Volume of gas = 605 ml = 0.605 L (1L=1000ml)
n = number of moles = 0.00803
R = gas constant =
T =temperature =
The pressure of the gas is 0.34 atm
Answer:
B
Explanation:
Crush solid reactant into smaller pieces.
Answer : The number '3' is a moles.
Explanation :
The given chemical formula is,
As we know that,
For 1 mole of , there are 1 mole of nitrogen and 2 moles of oxygen.
For 3 mole of , there are 3 moles of nitrogen and 6 moles of oxygen.
So, from this we conclude that the number '3' present before represent the number of moles.
Hence, the number '3' is a moles.