Chemistry The two metal ions that cause hardness to water are: Sodium, Magnesium Sodium, Potassium Calcium, Magnesium Sodium, Calcium Sodium, Magnesium Sodium, Potassium Calcium, Magnesium Sodium, Calcium ANSWER DOWNLOAD EXAMIANS APP
Chemistry If there is one million Mg2+ ions in MgCl2, how many chloride ions are there? Two million One million Ten million Half a million Two million One million Ten million Half a million ANSWER DOWNLOAD EXAMIANS APP
Chemistry Baking soda is : Potassium carbonate Sodium carbonate Sodium hydroxide Sodium bicarbonate Potassium carbonate Sodium carbonate Sodium hydroxide Sodium bicarbonate ANSWER DOWNLOAD EXAMIANS APP
Chemistry Conduction band electrons have more mobility than holes because they Have negative charge Are lighter Experience collision less frequently Need less energy to move them Have negative charge Are lighter Experience collision less frequently Need less energy to move them ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the principal ore of aluminium ? Bauxite Copper Lignite Dolomite Bauxite Copper Lignite Dolomite ANSWER DOWNLOAD EXAMIANS APP
Chemistry The inexpensive and commonly used variety of glass is called soda glass. was initially used for storing sodium carbonate was used initially for making bottles of soda(carbonated drink) is made using soda lime is made using soda(sodium carbonate) was initially used for storing sodium carbonate was used initially for making bottles of soda(carbonated drink) is made using soda lime is made using soda(sodium carbonate) ANSWER DOWNLOAD EXAMIANS APP
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