Answer:
You should start with 63.54 grams of copper.
Explanation:
The chemical reactions are processes in which the nature of the substances changes, that is, from some initial substances called reactants, totally different ones called products are obtained.
In the chemical reaction, the formulas of reagents and products appear preceded by numbers (the stoichiometric coefficients) that indicate the proportions according to which the transformation occurs. So you can say that stoichiometry establishes relationships between the molecules or elements that make up the reactants of a chemical equation with the products of said reaction. The relationships that are established are MOLAR relationships between the compounds or elements that make up the chemical equation: always in MOLES.
The stoichiometric coefficients of a chemical equation are due to the fact that the atoms present before the reaction must be the same after the reaction, although they will have been rearranged to produce new substances.
If you want 2 moles of silver (Ag), for stoichiometry of the reaction you need a moles of copper Cu. Being the molar mass of copper Cu 63.54 g / mole, then:
1 mole*63.54 g/mole= 63.54 g
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You should start with 63.54 grams of copper.</em></u>
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Atoms. Well, they can be broken down, but that won't happen that fast.
Answer:
B.
Explanation:
This is physical change as the popcorn has expanded in size.
Boiling point
Explanation:
The likely dependent variable the student used in this experiment is boiling point temperature
The amount of heat supplied will determine when a substance will boil or not based on the intermolecular force in them.
- In an experiment, the dependent variable is treated as the effect produced.
- It is the variable that relies on the outcome of the experiment.
- The independent variable is responsible for the changes in the experiment.
- The cause is the independent variable. It does not rely on the outcome of the experiment.
- The dependent variable is the boiling point.
- The independent variable is the amount of heat supplied or temperature changes.
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Experiments brainly.com/question/5096428
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We are asked in the problem to convert teh unit mci or millicurie to another unit of radioactivity, becquerel. The conversion to be used in this case is <span>1 millicurie [mCi] = 37,000,000 becquerel [Bq] .The problem gives 15 mCi which when multiplied to </span>37,000,000 is equal to 5,550,000,000 bQ
