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Balanced Chemical Equations
(8 x 2) on the reactants side as well. Now the only unbalanced one is Chlorine. On the left hand side, there are 16 Cl. On the right hand side, firstly, there are 2 Cl in 2 KCl + 4 Cl in 2 MnCl 2 , making total of 6(2 + 4). Subsequently 10 more Cl atoms are to be accounted for. So place 5..
(8 x 2) on the reactants side as well. Now the only unbalanced one is Chlorine. On the left hand side, there are 16 Cl. On the right hand side, firstly, there are 2 Cl in 2 KCl + 4 Cl in 2 MnCl 2 , making total of 6(2 + 4). Subsequently 10 more Cl atoms are to be accounted for. So place 5..Structure of the Atom
Structure of Atom - When scientists started exploring matter, they discovered that the smallest particle of an element that maintains its chemical identity through all chemical and physical changes is called and 'atom'. Just how small these atoms are can be made out if you realize that there are ab..
Structure of Atom - When scientists started exploring matter, they discovered that the smallest particle of an element that maintains its chemical identity through all chemical and physical changes is called and 'atom'. Just how small these atoms are can be made out if you realize that there are ab..Question 9
Question: Which is the correct symbol for manganese? 1. M 2. Ma 3. Mn 4. Mg Answer: ..
Electricity Resistivity of Some Substances at 20O C
is listed in the table given below.
Material Resistivity ( W m) Conductors Silver 1.60 x 10 -8 Copper 1.62 x 10 -8 Aluminium 2.63 x 10 -8 Tungsten 5.20 x 10 -8 Nickel 6.84 x 10 -8 Iron 10.0 x 10 -8 Chromium 12.9 x 10 -8 Mercury 94.0 x 10 -8 Manganese 1.84 x 10 ..
Symbols of Common Metals
Sl. No Name in English Name in any other Language other than English Symbol 1. Lithium - Li 2. Sodium Natrium (latin) Na 3. Magnesium - Mg 4. Aluminium - Al 5. Potassium Kalium (latin) K 6. Calcium - Ca 7. Vanadium - V 8. Chromium - Cr 9...
In a Science class, 53% of the students are boys. Which of these fract..
In a Science class, 53% of the students are boys. Which of these fractions represents 53%? => 1 2 or 53 100 or 53 50 or 53 10..
A teacher chooses a student at random from a class of 50 boys. What is..
A teacher chooses a student at random from a class of 50 boys. What is the probability that the student chosen is a boy? => 0 or 1 2 or 1 50 or 1..
The cost of 3 math journals and 6 science journals is $66 and the cost..
The cost of 3 math journals and 6 science journals is $66 and the cost of 4 math journals and 1 science journal is $32. Find the cost of a math journal and a science journal graphically. => $ 7 1 3 , $6.4 or $6, $8 or $21, $45 or $17, $49..
Each of the two bookshelves contains 15 books on science and 9 books o..
Each of the two bookshelves contains 15 books on science and 9 books on math. What is the probability of selecting a science book from the top bookshelf and a math book from the bottom bookshelf? => 5 22 or 15 64 or 45 197 or 25 96..
A shelf contains 5 math books and 15 science books. What are the odds ..
A shelf contains 5 math books and 15 science books. What are the odds in favor of selecting a math book from the shelf? => 1 3 or 1 4 or 2 3 or 3 4..
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