Why is potassium the most reactive metal? Explain why metal oxides tend to be basic if the oxidation number of the metal is low and acidic if the oxidation number of the metal is high. Explain why metals conduct electricity. Why is iron more reactive than copper?
Why is potassium permanganate used in the process of distillation of water? Explain why: (a) Co(NH_3)_6Cl_3 is yellow but Co(NH_3)_5ClCl_2 is purple (b) Mn(H_2O)_6BF_4_2 is Colourless c) KMnO_4 is a very intense purple colour ...
Very little. If you’re feeling the after-effects, drinking water will alleviate dehydration-related symptoms. There is no evidence, however, thatdepleted levels of electrolytessuch as sodium, potassium and magnesium are correlated with hangover severity. So an isotonic drink the morning after is...
In partnership with potassium ions (K+), the sodium ions (Na+) act like a chemical battery that allows the buildup of electrostatic charge within the cells. Through a series of chain chemical reactions, these nerve impulses are carried to the brain or muscles for a...
b). Although HRTEM is limited to ex-situ measurements and particles in the size range below about 10 nm as well as little contrast-forming particles are difficult to detect, it is the preferred method to investigate the carbon nanostructure of soot (Su et al.2004; Yehliu et al.2011a,b;...
when the plant is grown in open fields, leaves can absorb more light energy than can be used in photosynthesis, which could increase the probability of formation of highly reactive oxygen species (ROS) and triplet chlorophyll production. Under elevated [CO2], more light energy is required to sa...
Why is potassium the most reactive metal? Explain why ml is required to be an integer for the hydrogen atom. Explain why as you go across Period 3, the atomic radius decreases. What are the advantages and disadvantages of power production from nuclear fission?
Why is the ionic radius of potassium smaller than the atomic radius? Examine Group C compounds. Explain their low conductivity values. Why does water boil at a higher temp then NH_3 when they are both dipoles? Suggest why the melting temperature of magnesium oxide is higher than that o...
Why is 5% NaOH insoluble in HCl? Why is the ionic compound NaCl (table salt) able to dissolve in a glass of the molecular compound water (H_2O)? Why is potassium the most reactive metal? Explain why acid chlorides can be used to prepare amides but amides are not genera...
Why does water boil at a higher temp then NH_3 when they are both dipoles? Why does the boiling point of liquids vary with altitude? Explain the trend in melting point of metals across period 3 elements. What is the effect of impurities on the melting and boiling points of a...