Answer:
The molarity of the solution is: 2,167 M.
Explanation:
Molarity is a concentration measure that expresses the moles of solute per liter of solution. In this case it is calculated with the simple rule of three:
3,6 L solution ------- 7,8 moles of MgCl2
1 L solution -----------x= (1 L solution x 7,8 moles of MgCl2)/3,6 L solution
x=2,167 moles of MgCl2 ---> <em>The solution is 2, 167 M</em>
Answer:
The correct answer is <em>d. The nucleoside triphosphates have the sugar deoxyribose; ATP has the sugar ribose.</em>
Explanation:
The nucleoside triphosphates are components of DNA (deoxyribonucleic acid) so they are composed by a nitrogenous base (adenine, guanine, thymine or cytosine) and a deoxyribose sugar. In contraposition, ATP (adenosine triphosphate) is composed by the nitrogenous base adenine and a ribose sugar along with three phosphates groups. Unlike ribose, deoxyribose is a 5-carbon sugar which lack of an oxygen atom in C2 position.
Molecules are farthest apart in a gaseous state and closest together in a solid state. Liquid state is in the middle. Just think of the things you encounter everyday, you can't move your hand through a desk because it is comprised of molecules that are held so close together through various forces and molecular interactions.
The answer is C because as you add heat, the atoms grow in energy. See the law of conservation of energy states that energy is neither created nor destroyed. This means energy is being added, or converted, in the form of adding heat, increasing the speed of the molecules. This also explains the change from state to state.
The answer is sodium bicarbonate :)