true or false: in a balanced chemical equation, the number of atoms of each element must be the same on both…

true or false: in a balanced chemical equation, the number of atoms of each element must be the same on both sides of the arrow.\nfalse\ntrue\nwhich of the following is a skeleton equation? *\ncarbon + oxygen → carbon dioxide\nc(s) + o₂(g) → co₂(g)\n2c(s) + o₂(g) → 2co(g)\ncarbon and oxygen react to form carbon dioxide.\nwhich of these shows a single displacement reaction? *\nab + cd → ad + cb\na + b → ab\na + bc → ac + b\nab → a + b

true or false: in a balanced chemical equation, the number of atoms of each element must be the same on both sides of the arrow.\nfalse\ntrue\nwhich of the following is a skeleton equation? *\ncarbon + oxygen → carbon dioxide\nc(s) + o₂(g) → co₂(g)\n2c(s) + o₂(g) → 2co(g)\ncarbon and oxygen react to form carbon dioxide.\nwhich of these shows a single displacement reaction? *\nab + cd → ad + cb\na + b → ab\na + bc → ac + b\nab → a + b

Answer

Brief Explanations:

  1. A balanced chemical equation follows the law of conservation of mass, which means the number of atoms of each element must be equal on both sides of the equation.
  2. A skeleton equation uses chemical formulas to represent the reactants and products without coefficients for balancing. "Carbon + Oxygen → Carbon Dioxide" is a word - equation, "C(s) + O₂(g) → CO₂(g)" is a balanced chemical equation, "2C(s) + O₂(g) → 2CO(g)" is also a balanced chemical equation, and "Carbon and oxygen react to form carbon dioxide" is a word - equation. The skeleton equation is just the basic form with formulas, so "Carbon + Oxygen → Carbon Dioxide" is the closest to a skeleton equation in word - form.
  3. In a single - displacement reaction, one element replaces another element in a compound. The general form is A + BC → AC + B.

Answer:

  1. True
  2. Carbon + Oxygen → Carbon Dioxide
  3. A + BC → AC + B