Перетворіть схеми на хімічні рівняння: a) Al+H²SO⁴=Al²(SO⁴)³)+ H² ;
б) LiOH+SO²=Li²SO³+H²O ;
в) Ca³P²+H²O=Ca(OH)²+PH³ ;
г) Na²O²+CO³=Na²CO³+O² ;

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Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.

Ethanol (c2h5oh) is produced from the fermentation of sucrose in the presence of enzymes. c12h22o11(aq) + h2o(g) 4 c2h5oh(l) + 4 co2(g) determine the theoretical yield and the percent yields of ethanol if 680. g sucrose undergoes fermentation and 326.5 g ethanol is obtained. theoretical _ g _ percent %

How could a student test the effect of removing heat from a gas that is stored in a sealed container? what must occur in order for matter to change states?