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Marrrta [24]
2 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]2 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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When a -COOH group replaces a hydrogen in a hydrocarbon the result is a/an
soldier1979 [14.2K]

Answer:

drugs

Explanation:

4 0
3 years ago
A 800N mountain climber scales a 160m cliff. How much work is done by the mountain climber?
Fittoniya [83]

Answer:

Work done, W = 128 kJ

Explanation:

Given that,

Weight of a mountain climber, F = 800 N

It climbs to a cliff that is 160 m high.

We need to find the work done by the mountain climber. The work done by an object is given by the formula as follows :

W = Fd

Put the values of F and d.

W = 800 N × 160 m

W = 128000 J

or

W = 128 kJ

So, 128 kJ of work is done by the mountain climber.

3 0
2 years ago
What is the mass number of oxygen atom with 7 neutrons?
kirill [66]
Oxygen has 8 protons
8 + 7 = 15
This isoptope is O-15
7 0
3 years ago
How many total atoms are in PoCI
maks197457 [2]
There is a total of 2 atoms in PoCl. One Cl (chlorine) and one Po ( Polonium) 
7 0
3 years ago
Calculate the mass, in grams, of Avogadro's number of fluorine atoms. Enter your answer in the provided box. I g/mol
juin [17]

Answer:

Every substance, whether an element or a compound that contains Avogadro's number, is said to form a mole of it. Therefore for the fluorine atoms that form the Avogadro number we say that we have one mole of fluorine atoms and this weighs 19 g, so 19 g/mol

Explanation:

You can search the F in the Periodic Table where you have the molar mass, 19 g/mol but if you don't have a Periodic Table you can calculate like this:

1 atom of F weighs 19 Da (unified atomic mass unit) and 1 Da is 1,661 x10*-24 g, so try to apply a rule of three, twice.

1 Da ........... 1,661x10*-24 g

19 Da .......... x

x= (19 Da . 1,661x10*-24 g ) / 1 Da = 3,1559x10*-23 g

1 atom F ..............  3,1559x10*-23 g

6,022x10*23 atoms F ............. x

X= (6,022x10*23 atoms F . 3,1559x10*-23 g) / 1 atom F = 19.0048 g

3 0
2 years ago
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