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Maurinko [17]
3 years ago
11

Which elements make up a family

Chemistry
2 answers:
natulia [17]3 years ago
8 0
The columns in the periodic table. They're also known as groups.
andrew-mc [135]3 years ago
3 0
The columns going up and down on the periodic table of elements are familys
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Please help!!
Olegator [25]
Molarity =  Moles/Liter

Use the molecular atomic mass of NaCl to convert from grams to moles.
Molecular mass of NaCl is the sum of its atomic masses. Look at the periodic table to find these. Na is 23 g/mol and Cl is 35.5 g/mol ,
so NaCl = 23 + 35.5 = 58.5 g/mol

multiply to cancel out grams
76 g NaCl * (1mol / 58.5 g NaCl) = 1.3 mol NaCl

over 1 Liter is just 1.3 M NaCl
Hope this helps!
8 0
3 years ago
In the Bohr model, ____ electrons fill the first energy level, ____ electrons fill the second energy level, and ___ electrons fi
Setler [38]
The answer is d Thus, the first energy level holds 2 * 1^2 = 2 electrons, while the second holds 2 * 2^2 = 8 electrons. Each orbital. The third energy level can hold up to 18 electrons, meaning that it is not full when it has only electrons.
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2 years ago
How do the properties of the elements change as you move across a period on a periodic table from left to right?
Tomtit [17]
B) The elements become less reactive.
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3 years ago
Which statements describe organic compounds? Check all that apply.
strojnjashka [21]
Organic compounds contain carbon
6 0
3 years ago
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What tool does the US government use to keep track of inflation throughout the years?
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The answer is d the inflation scale
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