No units are provided in the data table, though one would usually assume that 0.244 is molarity of NaOH, and buret data of 14.7 is probably the final volume of NaOH in mL. No identification is given for the 38, but maybe this is the initial buret volume in mL.
If the buret was rinsed with water, it should have been left to dry for some time, or else the added water may slightly dilute the NaOH solution placed in it.
The particle that adds mass but no charge to the atomic nucleus is the neutron.
The nucleus contains both protons and neutrons.
Protons and neutrons have about the same mass.
However, protons have a positive charge, while <em>neutrons have no charge</em>,
Answer:
Explanation:
The molecular mass of a monomer unit is:
C₂H₃Cl = 2×12.01 + 3×1.008 + 35.45 = 24.02 + 3.024 + 35.45 = 62.494 u
For 1565 units,
Answer:
3.75 atm
Explanation:
Volume remains constant, so we can use <em>Gay-Lussac’s Law</em>.
<em>p</em>₁/<em>T</em>₁ = <em>p</em>₂/<em>T</em>₂ Multiply both sides by <em>T</em>₁
<em>p</em>₁ = <em>p</em>₂ × <em>T</em>₁/<em>T</em>₂
<em>p</em>₁ = ?; <em>T</em>₁ = 299 K
<em>p</em>₂ = 7.77 atm; <em>T</em>₂ = 620 K Insert the values
<em>p</em>₁ = 7.77 × 299/620 Do the operations
<em>p</em>₁ = 3.75 atm
The statement that is true for most chemical reactions is that A. An energy change occurs during the breaking and forming of chemical bonds. As the reactants react ultimately producing products the atoms of the respective elements within the compounds if present will break and reform ultimately to produce the products, during this change energy transformation from chemical bond formation and breakage occurs, and allows one to determine whether or not a reaction releases energy or needs a substantial amount of energy based on the energy content of the reactants and products.
