Answer:
Parasites take nutrients from another organism's body.
Explanation:
Answer: Some atoms of the same elements that have different atomic masses are called isotopes
Explanation:
so the atoms are the same element but different in mass. Since the isotopes have the same number of protons and electrons the isotopes have much the same chemical behavior. Since the isotopes have different numbers of neutrons the nuclear behavior differs.
Answer:
514 kJ
General Formulas and Concepts:
<u>Atomic Structure</u>
- Reading a Periodic Table
- Elements
- Compounds
- Moles
<u>Stoichiometry</u>
- Analyzing Reactions rxn
- Using Dimensional Analysis
Explanation:
<u>Step 1: Define</u>
<em>Identify</em>
[Given] rxn (balanced): 2Si (s) + 2Cl₂ → 2SiCl₂ (g) + 687 kJ
[Given] 106 g Cl₂
[Solve] kJ heat
<u>Step 2: Identify Conversions</u>
[rxn] 2 mol Cl₂ → 687 kJ
[PT] Molar Mass of Cl: 35.45 g/mol
Molar Mass of Cl₂: 2(35.45) = 70.9 g/mol
<u>Step 3: Stoichiometry</u>
- [DA] Set up:
- [DA] Divide/Multiply [Cancel out units]:
<u>Step 4: Check</u>
<em>Follow sig fig rules and round. We are given 3 sig figs.</em>
513.554 kJ ≈ 514 kJ
Topic: AP Chemistry
Unit: Thermochemistry
Enthalpy of fusion is defined as the heat entailed to convert a substance from a liquid state to solid state. both gases are diatomic hence polar so the energies supposed to be are great because of the great energy of bonds existing between. N2 is more polar than I2 so this would take greater energy to transform to another state. Answer is N2.