If Sally buys 4 oranges for 2 dollars each, 5 loaves of bread for 4 dollars each, and 3 bowls for 6 dollars each, how much change will she receive from the cashier if she pays with a $50 bill?
Add up the totals for each of the types of items bought. Oranges: 4 x 2 = $8 Bread: 5 x 4 = $20 Bowls: 3 x 6 = $18 $8 + $20 + $18 = $46 Then subtract this amount from the money she gives the cashier to figure out the amount of change she will receive. $50 - $46 = $4 in change
Oxygen has an atomic number of 8. How many protons, neutrons, and electrons does this element have if it is charge neutral and is the most common isotope found in nature?
Oxygen has 8 protons, 8 electrons, and 8 neutrons.
What composes a nucleotide?
A nucleotide is the building block for nucleic acids. These are made of a 5 carbon sugar (ribose or deoxyribose), a nitrogenous base (adenine, guanine, cytosine, thymine in DNA, or uracil in RNA), and 1 - 3 phosphate groups.