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victus00 [196]
3 years ago
9

Can u helmp me, i can give u a 25 points

Chemistry
1 answer:
tester [92]3 years ago
5 0
They’re less reactive, they don’t react quickly with water or oxygen which they resist corrosion.

Answer : true
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The molarity of a 4.200 L solution is 1.230 M Na2CO3. What is the mass of Na2CO3
Lerok [7]

Answer:

547.5g

Explanation:

To get the mass, you need moles.

moles = (molarity)(Liters)

moles = (1.230M)(4.200L) = 5.166 moles Na2CO3

Now, just use stoichiometry

molar mass of Na2CO3 = 2(mass of Na) + (mass of C) + 3(mass of O)

= 2(22.9) + 12.01 + 3(16) = 105.99g/mol

5.166moles(105.99g/mol)

= 547.544

But, the measurements given had 4 significant figures, so in chemistry we write:

547.5g

7 0
3 years ago
1, 2, or 3...help please
Mashcka [7]

Answer:

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I need help in thiss
Papessa [141]
I know CL is chlorine and NA is sodium.
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3 years ago
Which statements are true of the reaction below? 2na(s) + cl2(g) 2nacl(s) Check all that apply. A - NaCl is a product B - Na(s)
Bumek [7]

Answer:

A - NaCl is a product

D - Cl2 is a gas

Explanation:

Based on the chemical reaction;

2Na(s) + Cl2(g) → 2NaCl2

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  • In the chemical reaction, sodium and chlorine are reactants while sodium chloride is the product.
  • Additionally the chemical reaction above is balanced so as to obey the law of conservation of mass.
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What word or two-word phrase best describes the shape of the nitrite ( NO2- ) ion?
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I think the answer would be nitrogen

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