A portion of the periodic table of elements is reproduced here. Based on their relative positions, what conclusion can be drawn about these metallic elements?
A All the elements have the same reactivity.
B Potassium is much more reactive than iron.
C Chromium is twice as reactive as vanadium.
D Calcium is much less reactive than scandium.

What volume of a 0.25 m solution can be made using 0.55 moles of ca(oh)2

Put the following processes of protein synthesis in the correct order: - dna strands unwind and separate - mrna copies dna according to complimentary base pairing - trna's anticodons bring amino acids to the corresponding mrna codons - amino acids bind to each other making a protein - mrna leaves the nucleus - a stop codon is reached, the newly formed protein is released to go do its job for the cell

During which phase does earth see more than half of the moon's surface? 1)first quarter2)third quarter3)waxing gibbous4)waning crescent