Examlex
A rate constant obeys the Arrhenius equation,the factor A being 2.2 1013 s-1 and the activation energy being 150.kJ mol-1.What is the value of the rate constant at 227°C,in s-1?
Decimal Notation
A method of writing numbers in terms of digits and decimal points to represent fractions and real numbers.
Sum
The outcome obtained by summing two or more numbers or amounts.
Expression
A combination of symbols and operators representing a mathematical value or relationship.
X
A common symbol used to represent a variable or an unknown value in mathematics.
Q15: Identify by number (1A-8A)the main-group of
Q18: Identify the organic product for the reaction
Q22: A molecule with the formula AX<sub>3</sub> uses
Q22: The solubility of lead(II)chloride is 0.45
Q23: The surface tension of water is lowered
Q32: A molecule which contains polar bonds will
Q39: Which of the following pairs has the
Q71: What is the value of the
Q73: In general,water is a good solvent for
Q80: An acetate buffer has a pH of