How many protons, neutrons, and electrons are in a neutral atom with the symbol 41Ca es ) A) 20 protons, 21 neutrons, 21 electrons B) 20 protons, 21 neutrons, 20 electrons C) 21 protons, 21 neutrons, 20 electrons Eliminate D) 41 protons, o neutrons, 41 electrons thing

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 %

Look at the spectrums of a star moving towards earth and a motionless star. which of these is a correct inference that can be draw from the observation of the two spectrums? (2 points) the spectrum of a motionless star is difficult to be viewed separately using oridinary telescopes. the spectrum of a motionless star is identical to the spectrum of a star which moves towards earth. the spectrum of a star shifts towards the red region when the star moves towards earth. the spectrum of a star shifts towards the blue region when the star moves towards earth.

Consider the four elements above. which one of these elements will combine with oxygen in a 1: 1 ratio?