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Marrrta [24]
3 years ago
7

How many protons does an atom of Iodine (I), #53, have if it has an atomic mass of 127?

Chemistry
1 answer:
Vilka [71]3 years ago
3 0
Iodine has 53 protons. The atomic number is always the same as the number of protons that element has.
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Hurry 20pts
PSYCHO15rus [73]

Answer:

Schaus Swallowtail Butterfly

Explanation:

They eat food plants, torchwood and wild lime. And their an endangered species in Florida.

3 0
3 years ago
Write the formula two atom of iron and three atoms of oxygen​
34kurt

Answer:

Fe2O3 is the formula this is your correct answer

5 0
3 years ago
What fraction of atoms in morphine is accounted for by carbon?
Yuki888 [10]
To determine the fraction of carbon in morphine, we need to know the chemical formula of morphine. From my readings, the chemical formula would be  <span>C17H19NO<span>3. We assume we have 1 g of this substance. Using the molar mass, we can calculate for the moles of morphine. Then, from the formula we relate the amount of carbon in every mole of morphine. Lastly, we multiply the molar mass of carbon to obtain the mass of carbon. We calculate as follows:

1 g </span></span> <span>C17H19NO<span>3 ( 1 mol / 285.34 g ) ( 17 mol C / 1 mol </span></span> <span>C17H19NO3</span>) ( 12.01 g C / 1 mol C) = 0.7155 g C

Fraction of carbon = 0.7155 g C / 1 g  <span>C17H19NO<span>3 = 0.7155</span></span>
8 0
4 years ago
Read 2 more answers
Which is an example of a heterogeneous mixture? <br>A coffee<br>B soil<br>C gelatin<br>D air
mariarad [96]
Heterogeneous mixtures are made of different substances that remain physically seperate. An example would be mixing sand and sugar together.
the answer would be soil
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6 0
3 years ago
You need to make an aqueous solution of 0.207 M calcium acetate for an experiment in lab, using a 300 mL volumetric flask. How m
jeka94

Answer:

We have to add 9.82 grams of calcium acetate

Explanation:

Step 1: Data given

Molarity of the calcium acetate solution = 0.207 M

Volume = 300 mL = 0.300 L

Molar mass calcium acetate = 158.17 g/mol

Step 2: Calculate moles calcium acetate

Moles calcium acetate = molarity * volume

Moles calcium acetate = 0.207 M * 0.300 L

Moles calcium acetate = 0.0621 moles

Step 3: Calculate mass calcium acetate

Mass calcium acetate = moles * molar mass

Mass calcium acetate = 0.0621 moles * 158.17 g/mol

Mass calcium acetate = 9.82 grams

We have to add 9.82 grams of calcium acetate

5 0
3 years ago
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