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ElenaW [278]
3 years ago
8

What is the formula and name of the compound formed between na+ and o2-

Chemistry
1 answer:
MissTica3 years ago
6 0
2Na + O2 -> NaO2 


that name is :
sodium peroxide
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How many moles (of molecules or formula units) are in each sample?
Alexus [3.1K]

The number of moles in each sample will be 0.391 moles, 30.7 moles, 0.456 moles, and 1350 moles

<h3>What is the number of moles?</h3>

The number of moles of a substance is the ratio of the mass of the substance to the molar mass.

In other words; mole = mass/molar mass.

Thus:

  • moles of 18.0 g NO_2 = 18.0/46

                                   = 0.391 moles

  • moles of 1.35 kg CO_2 = 1350/44

                                         = 30.7 moles

  • moles of 46.1 g KNO_3 = 46.1/101.1

                                          = 0.456 moles

  • moles of 191.8 kg Na_2SO_4 = 191800/142

                                                 = 1350 moles

More on the number of moles of substances can be found here: brainly.com/question/1445383

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5 0
2 years ago
Can you do my project please and I'll mark brainllest
Alex17521 [72]

Answer:

Whats the project?

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8 0
3 years ago
Antifreeze is mixed with water in a car's cooling system because the solution what?
Nikolay [14]
Antifreeze is an additive in water-based liquid to lower down the freezing point of such liquid. It is used to make use of the colligative properties of solutions specifically freezing-point depression for cold climate and boiling-point elevation to allow higher coolant temperature.
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3 years ago
Difference between Physical and chemical changes <br> At least six examples for each type of change
Tju [1.3M]
Physical<span> changes involve a new </span>form<span> or shape of matter, 
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4 0
3 years ago
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How many grams are in 0.35 moles of C2H4? please show dimensional analysis
fredd [130]

Answer:

9.8g

Explanation:

Using periodic table find molar mass of C and H:

C=12.01g/mol

H=1.008g/mol

Molar mass of C2H4=(12.01)2+(1.008)4=28.03g/mol

Using molar mass times moles of the chemical to find the mass in 0.35 moles of c2h4:

28.03 x 0.35=9.8grams

5 0
3 years ago
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