Answer:
27.2 a.m.u
Explanation:
Isotope of an element is its tendency to exist in two or more forms. Thus, the average atomic mass of the element is required. And this can be calculated by adding the individual product of the percentage isotope and its mass.
The average atomic mass of the element can be determined by:
= (70% x 26) + (30% x 30)
= (0.7 x 26) + (0.3 x 30)
= 18.2 + 9
= 27.2
Thus, the average atomic mass of element X is 27.2 a.m.u
Answer is: the maximum wavelength of light is 7.34 × 10⁻⁷ m.
E= 163 kJ/mol; bond energy of one mole of nitrogen.
E = 163000 J/mol ÷ 6.022·10²³ 1/mol.
E = 2.707·10⁻¹⁹ J; bond energy per molecule.
E = h·c/λ.
c = 3.00 × 10⁸ m/s; light speed.
h = 6.62607004·10⁻³⁴ J·s; Planck constant.
λ(photon) = h·c/E.
λ(photon) = 6.62607004·10⁻³⁴ J·s · 3.00 × 10⁸ m/s ÷ 2.707·10⁻¹⁹ J.
λ(photon) = 7.34 × 10⁻⁷ m.
λ(photon) = 734 nm.
It’s definitely magnesium but it may not be
Answer:
I think it is a color but I'm not completely sure
The complete ionic equation is used to describe the chemical reaction while also clearly indicating which of the reactants and/or products exist primarily as ions in aqueous solution. To write the complete ionic equation: Start with a balanced molecular equation.
