Answer:
Yes
Explanation:
Qualitative data deals with the properties or qualities of matter. In qualitative studies, the aim is to understand all about the structure and properties of matter.
Some qualitative methods involve the use of radiation. A typical example of such is the X-ray diffraction. XRD is a qualitative method that can reveal the internal structure of a molecule as well as arrangement of atoms which are not hydrogen.
Also radiation is useful in quantitative measurements such as atomic absorption spectroscopy, spectrophotometry, etc.
Answer:
22.39g of NaBr
Explanation:
First let us write a balanced equation for the reaction. This is illustrated below:
2Na + Br2 —> 2NaBr
Molar Mass of Na = 23g/mol
Mass of Na from the balanced equation = 2 x 23 = 46g
Molar Mass of NaBr = 23 + 80 = 103g/mol
Mass of NaBr from the balanced equation = 2 x 103 = 206g
From the equation,
46g of Na produced 206g NaBr.
Therefore, 5g of Na will produce = (5 x 206)/46 = 22.39g of NaBr
<h3><u>Answer;</u></h3>
= 0.6224 M
<h3><u>Explanation</u>;</h3>
Molarity is given by the formula;
Molarity = Number of moles/Volume
But moles = mass/Molar mass
Thus;
Moles = 12.47 g/80.043 g/mol
= 0.1556 Moles
Therefore;
Molarity = 0.1556 moles/0.25
<h3> <u>= 0.6224 M</u></h3>
The answer is 1.98 x 10^10 leaves.
18 mountains x 8800 trees = 158400 total trees
158400 total trees x 125000 leaves = 19800000000 total leaves in entire mountain range
Sci not: 1.98 x 10^10 leaves
To do scientific notation, put the decimal place right after the first digit in the number and count how many places are behind the decimal. you'll write the number of places after the decimal after the ^ in the 10^.