Answer:
B. 2.14 x 10^-19 J
Explanation:
The energy of a wave of light can be obtained using the equation:
E = h*c/λ
<em>Where E is the energy in joules, </em>
<em>λ is wavelength = 930nm = 930x10⁻⁹m</em>
<em>h = Planck's constant = 6.626x10⁻³⁴Js</em>
<em>c = Speed of light = 3.00x10⁸m/s</em>
Replacing:
E = 6.626x10⁻³⁴Js*3.00x10⁸m/s/930x10⁻⁹m
E = 2.14x10⁻¹⁹J
Right option is:
<h3>B. 2.14 x 10^-19 J
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Not really a question, but its true
Experiments test the scientists' ideas.
Explanation:
Food Coloring. A drop of food coloring in a glass of watercolors the water through diffusion. The dye molecules slowly spread evenly through the liquid, creating one particular shade.
Answer:
Explanation:
25.3% Mg
74.7% Cl
First step: change % to g
25.3g Mg
74.7g Cl
Second step: calculate g/mol of each compound. You can do this by using the atomic mass.
Third step: determine the lowest number and divide everything by it. Of the result, extract whole number only.
Fourth step: Write each compound with their respective number below.
This empirical formula should be: