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KengaRu [80]
3 years ago
9

How can you use the periodic table to find the number of protons in one atom of an element?

Chemistry
1 answer:
Ad libitum [116K]3 years ago
8 0
The number of protons is the same as the atomic number of the element. So if you look for the atomic number of an element on your periodic table, then you can find the number of protons.
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If an atom can form more than one cation, the cation with the lowest charge ends with which set of letters?
Verdich [7]

Answer:

Answer is A 

Explanation:

Now we know that an atom wants to complete its outer shell while keeping electrons in pairs of two now in A there are four electrons which which can be ejected while in B will want to accept 3 electrons to complete its shell as ejecting five will take lot of energy similar case will be for C,D and E which would want to accept 2,1,0 electrons respectively

3 0
2 years ago
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Citric acid has a pH between 1 and 3. It is considered to be a
Tasya [4]
Strong Acid cause it has a very low pH
5 0
2 years ago
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Can someone show their work on how to do this: Calculate the number of moles of Al2O3 present in 23.87g. (Molar mass of Al2O3= 1
vodomira [7]

Answer:

0.234 moles

Explanation:

moles of Al2O3 = mass / molar mass

moles of Al2O3 = 23.87g / 102.0g/mol

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6 0
3 years ago
How many moles of chlorine are in 100g of chlorine
cricket20 [7]
No. of moles = mass / molar mass
= 100/35.5
5 0
2 years ago
9) After lab, all of Darrel’s friends looked at his data and laughed and laughed. They told him that he was 30.8% too low in the
zaharov [31]
If he was 30.8% too low, it means that he was at 69.2% of the boiling point needed. So 50o C is 69.2% of total.

In order to know what 100% is, you can divide the number by it's percentage and then multiply it by a hundred.

So: 50/30.8=1.623
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So the correct boiling point of the liquid he was working with in the lab is 162.3 oC
3 0
3 years ago
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