In the late 1800s, experiments using cathode ray tubes led to the discovery of the <span>(1) electron</span>
Answer:
1.58×10² nm
Explanation:
Given data:
Frequency of light = 1.90 ×10¹⁵ Hz
wavelength of light = ?
Solution:
Speed of light = wavelength × Frequency
Speed of light = 3×10⁸ m/s
3×10⁸ m/s = λ × 1.90 ×10¹⁵ Hz
Hz = s⁻¹
λ = 3×10⁸ m/s / 1.90 ×10¹⁵s⁻¹
λ = 1.58×10⁻⁷ m
meter to nm:
1.58×10⁻⁷ m ×10⁹ nm/ 1m
1.58×10² nm
Answer:
Explanation:
A chemical formula can be defined as a notation that is used to show which element and how many is contained in a chemical compound.
Also, in chemistry, the sum of charges of the anion and the cation of any ionic compound is always equal to zero.
A chemical equation is considered to be balanced when the amount of reactants on the left is equal to the amount of products on the right.
Therefore;
[2]FeBr3 + [3]Na2S → [1]Fe2S3 + [6]NaBr
In the above chemical equation, we will balance the reactants in the chemical equation with the smallest coefficients possible;
Two (2) moles of Iron (III) Bromide reacts with two (2) moles of Sodium Sulfide to form Iron (III) Sulfide and Sodium Bromide.
Answer:
A
Explanation:
A Equations showing which elements are oxidized and which are
Answer:
The answer to your question is 194 g
Explanation:
Molecular mass is the sum of all the masses of the atoms that form a molecule.
In the problem, we have C₈H₁₀N₄O₂ which means
atomic mass number of atoms total
Carbon 12 8 12 x 8 = 96
Hydrogen 1 10 1 x 10 = 10
Nitrogen 14 4 14 x 4 = 56
Oxygen 16 2 16 x 2 = 32
194 g