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cupoosta [38]
3 years ago
8

The emission spectrum for an element is? Select all that apply

Chemistry
1 answer:
lesya [120]3 years ago
4 0

Answer:  You didn't give anything to select, however, the emission spectrum of a chemical element is frequencies of electromagnetic radiation emitted due to an atom or molecule making a transition from a high energy state to a lower energy state.

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How many grams in 6.20 x 10^25 atoms of bromine (Br) ? image attached , will give brainliest
Deffense [45]

Answer:

8239.2g

Explanation:

Given parameters:

Number of atoms in Br  = 6.2 x 10²⁵atoms

Unknown:

Mass of Br = ?

Solution:

From mole concepts, we know that:

       1 mole of a substance contains 6.02 x 10²³ atoms/mol

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6.2 x 10²⁵atoms  x \frac{1}{6.02 x 10^{23} } \frac{mol}{atoms} x  80 x \frac{g}{moles}  

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Explanation:

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2 years ago
Find the [H+] in an acetic acid solution that has a pH of 5.12
Eva8 [605]
<span>Data:
pH = 5.2
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Knowing that: (</span><span>Equation to find the pH of a solution)</span>
pH = -log[H+]
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Solving:
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\boxed{\boxed{[H+] = 6.30*10^{-6}}}\end{array}}\qquad\quad\checkmark
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Filtration, or screening, is one way to separate certain mixtures, as shown in the image. Which of these mixtures could be most
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