Examlex
A) Give the names of the following ions: (i) O22- and (ii) SO42-
B) Write down the formulas of the following ions: (i) ammonium and (ii) nitrate
Statistically Significant
A measure indicating that the likelihood of an observed effect occurring by chance is low, often used in research to validate findings.
Experimental Method
A research method that tests hypotheses and establishes causality by using control and experimental groups and manipulating independent variables.
Representative Sample
A subset of a population that accurately reflects the members of the entire population.
Sophisticated Statistics
The use of advanced and complex statistical methods and analyses to understand and interpret data.
Q5: When 0.152 mol of solid PH<sub>3</sub>BCl<sub>3</sub> is
Q22: Sulfide ores are frequently treated by flotation
Q33: Cryolite, Na<sub>3</sub>AlF<sub>6</sub>, is used in the electrolysis
Q37: For the reaction 2A + B
Q39: The salts X(NO<sub>3</sub>)<sub>2</sub> and Y(NO<sub>3</sub>)<sub>2</sub> (where X<sup>+</sup>
Q40: In a fuel cell, an external source
Q70: Select the correct name for this compound.
Q75: The units of the rate of reaction
Q81: A) State the requirement for two molecules
Q84: A 20.0-mL sample of 0.25 M HNO<sub>3</sub>