Answer:
We need 41.8 mL of NaOH
Explanation:
<u>Step 1:</u> Data given
Mass of H2X = 0.1873 grams
Molarity of NaOH solution = 0.1052 M
Molar mass of H2X = 85.00 g/mol
<u>Step 2</u>: The balanced equation
H2X (aq) +2 NaOH (aq) → Na2X (aq) + 2H2O(l)
<u>Step 3:</u> Calculate moles of H2X
Moles H2X = mass H2X / Molar mass H2X
Moles H2X = 0.1873 grams / 85.00 g/mol
Moles H2X = 0.0022 moles
<u>Step 4:</u> Calculate moles of NaOH
For 1 mol H2X we need 2 moles NaOH to produce 1 mole of Na2X and 2 moles of H2O
For 0.0022 moles of H2X we need 0.0044 moles of NaOH
<u />
<u>Step 5</u>: Calculate volume of NaOH
Volume of NaOH = moles of NaOH / molarity of NaOH
Volume of NaOH = 0.0044 moles / 0.1052 M
Volume NaOH = 0.0418 L = 41.8 mL
We need 41.8 mL of NaOH
The first one is B because it’s gonna be positive if it’s gaining energy
<span>Enzymes have three main characteristics. First, they increase the rate of a natural chemical reaction. Secondly, they typically only react with one specific substrate or reactant, and thirdly, enzyme activity is regulated and controlled within the cell through several different means, including regulation by inhibitors and activators. It is possible to group enzymes into different categories, including oxidases, transferases, hydrolases, lyaes, isomerases and ligases. In naming enzymes, the "-ase" suffix is often appended to the name of the substrate molecule upon which which the enzyme reacts. For example, the enzyme sucrase catalyzes the transformation of the sugar sucrose in to glucose and fructose. In this case, the "sucr-" suffix represents the molecule upon which the sucrase enzyme reacts. Not all enzymes are named according to this convention.</span>
C. Enzyme because they catalyze biochemical reactions
Great Question!
The Answer Would Be "B" The "RESPONDING" Variable
