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Substitute the symbols with their new meanings: 124 ÷ 4 - 5 × 6 + 6 ÷ 3 = 31 - 5 × 6 + 2 = 31 – 30 + 2 = 3 So, the value of the expression is 3.
In a compound, the elements are always present in definite proportions by:
In the periodic table of elements, what happens to the atomic radius as you move from left to right across a period?
The fossil of Archaeopteryx represents the evidence of origin of
On a clean glass plate, a drop of water spreads to form a thin layer whereas a drop of mercury remains almost spherical because:
What is the chemical name for baking soda?
Which of the following is a noble gas ?
What is the chemical name of the Laughing Gas?
_________is a formula for rust.
Which of the following is a water soluble vitamin?
What is the chemical name of baking soda?
