The mass of unreacted zinc = 13 g
<h3>Further explanation
</h3>
The reaction equation is the chemical formula of reactants and products
A reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation. The reaction coefficient is useful for equalizing reactants and products
Reaction
mol ratio Zn : HCl = 1 : 2
Answer: 7 milimoles of dissolve in 1 litre water.
Explanation:
Given: gas is passed through water at 293K.
Assumption : exerts a partial pressure of 0.987 bar.
Take : Henry's constant = 76.8 Kbar
To find : Number of moles of gas dissolve in 1 litre water.
According to Henry's law,
moles in 1 liter of water =
Let n= moles of nitrogen
Total moles = 55.56+n
So,
Hence, 7 milimoles of dissolve in 1 litre water.
Answer:
Chemical bonds hold molecules together and create temporary connections that are essential to life.
Explanation:
Chemical Bonding refers to the formation of a chemical bond between two or more atoms, molecules, or ions to give rise to a chemical compound. These chemical bonds are what keep the atoms together in the resulting compound.
Answer:
1.99 x 10⁻¹³J
Explanation:
Data Given
wavelength of the gamma radiation = 1.00x10⁻³ nm
Convert nm to m
1 nm = 1 x 10⁻⁹
1.00x10⁻³ nm = 1.00x10⁻³ x 1 x 10⁻⁹ = 1.00 x 10⁻¹²m
Energy of photon = ?
Solution
Formula used
E = hc/λ
where
E = energy of photon
h = Planck's Constant
Planck's Constant = 6.626 x 10⁻³⁴ Js
c = speed of light
speed of light = 3 × 10⁸ ms⁻¹
λ = wavelength of radiation
Put values in above equation
E = hc/λ
E = 6.626 x 10⁻³⁴ Js ( 3 × 10⁸ ms⁻¹ / 1.00 x 10⁻¹²m)
E = 6.626 x 10⁻³⁴ Js (3 x 10²⁰ s⁻¹)
E = 1.99 x 10⁻¹³J
1.99 x 10⁻¹³J is energy of photon