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matrenka [14]
3 years ago
9

A student builds a model of her bedroom. the scale is 1:25. in scale model, the students bed is 3 inches long

Chemistry
1 answer:
ad-work [718]3 years ago
8 0
The answer is C 75 inches
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Which of the following is true for an excess reactant?
kupik [55]

Answer:

C) It is the reactant that is left over after the reaction stops.

Explanation:

The excess reactant is the reactant that is left over after the reaction stops. The extent of the reaction is not determined by this reactant.

A limiting reactant is a reactant that is in short supply within a given reaction.

Such reactants determines the extent of chemical reaction.

  • Limiting reactants are used up in a chemical reaction.
  • The excess reactants remains unchanged after the reaction.
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What was the original element formed moments after the Big Bang? What then created higher order elements?
Semmy [17]
Hydrogen (H) was first, followed by helium (He).
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Which physical property can NOT be observed using 5 senses without changing the chemical makeup of the object that you are obser
bonufazy [111]
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4 0
3 years ago
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Kisachek [45]

Answer;

(3) Substance A is an element and substance Z is a compound.

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-A compound is a substance formed when two or more chemical elements are chemically bonded together, such as water, carbon dioxide, methane, etc while an element is a pure chemical substance made of same type of atoms, such includes, oxygen, potassium, hydrogen, carbon, etc.

- Compounds can be broken down or decomposed into simpler substances: elements cannot be broken down chemically into simpler substances .

5 0
3 years ago
Read 2 more answers
A substance made up of only one type of atom would be a
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Element

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Because elements can be made with only one atom the rest of the answers cant be

4 0
2 years ago
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