1 SEC - Chemistry

Complete :

Avogadro's ..................

Equal volumes of different gases contain an equal number of molecules, at the same standard temperature and pressure ( STP)

Complete :

Calculate the number of molecules that are found in a sample of sulphur dioxide of mass 32 g [ S=32 , O=16 ]

The number of molecules of SO₂ = ............. x 10²³ molecules

Complete :

Avogadro's ................

Gas volume is directly proportional to the number of its moles when the temperature and pressure are constant

Complete :

The .............. reactant

The reactant which is completely consumed during the chemical reaction and reacts with other reactants to produce the lowest number of moles of the product

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The volume of 4 g of hydrogen gas at STP equals ............

[ H=1 ]

• 89.6 L

• 44.8 L

• 22.4 L

• 2 L

What is the total number of moles of oxygen ions found in 240 g of NH₄NO₃

[ N=14 , O=16 , H=1 ]

• 3 mol

• 6 mol

• 9 mol

• 27mol

The gas which the volume of 0.6 g of it = 80 ml, at STP , its molar mass = .............

• 340 g/mol

• 310 g/mol

• 85 g/mol

• 168 g/mol

ما رأيك فى الاختبار التفاعلى فى مادة الكيمياء لغات ؟

مع تحياتى أ. أشرف موسى محمد

Chemistry Teacher

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Complete :

The summation of coefficient of equation after balance

Al_(s) + O_2(g) ====> Al₂O_3(s)

_{Equal = ............}