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The third choice: it is equal to the total mass of glucose and oxygen formed because during the process of photosynthesis the reactants need to be equal to the total mass of the product which includes both sugar (glucose) and oxygen.
The correct answer is option 4 and 5.
The electron domain geometry for an ammonia molecule, NH₃ has tetrahedral electron domain geometry. In NH₃ there are three bond pair electrons and one lone pair electron. Therefore, NH₃ has four electron pairs which are distributed in a tetrahedral shape.
The molecular geometry for an ammonia molecule, NH₃ is trigonal-pyramidal molecular geometry. Ammonia has one lone pair of electron and three bond pairs of electrons thus the resulting molecular geometry is trigonal-pyramidal.
Answer:
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Explanation:
1. Fluorine
a. Each fluorine atom has seven valence electrons.
b. Fluorine is a nonmetal.
c. The combination of these atoms creates a covalent bond.
d. The atoms share a pair of valence electrons.
e. In the ionic bond, an electron moved from one atom to the other one.
f. The molecule forms a straight line.
2. Oxygen
a. Each oxygen atom has six valence electrons.
b. Oxygen is a nonmetal.
c. The combination of these atoms creates a covalent bond.
d. The atoms share two pairs of valence electrons.
e. The bond has four electrons instead of two.
f. The molecule forms a straight line.
Answer:
(i) Change in colour (ii) Change in temperature (iii) Formation of precipitate
Explanation:
(i) Change in colour: Reaction between lead nitrate solution and potassium iodide solution. Pb(NO3)2(aq)+2KI → PbI2(s)+2KNO3(aq) In this reaction, colour changes from colourless to yellow. (ii)Change in temperature: Action of dilute sulphuric acid on zinc. Zn(s) + H2SO4(aq) → ZnSO4(aq) + H2 In this reaction, heat is evolved (iii) Formation of precipitate: Action of barium chloride on sodium sulphate. BaCl2(aq) +Na2SO4(aq) → BaSO4(s) +2NaCl(aq) BaSO4(s)
