It is not a mineral because it is man made!
Answer:
B) an error occurred, the mass of the reactants should equal the mass of the products.
Explanation:
The answer choices are:
A) no error occurred, some of the products are always lost as heat.
B) an error occurred, the mass of the reactants should equal the mass of the products.
C) an error occurred, the products should weigh more than the reactants.
D) no error occurred, water is not weighed when determining the weight of the products.
Solution
The basis to answer this question is the law of conservation of mass.
Any chemical reaction satisfies the law of conservation of mass: mass cannot be either created nor destroyed, so, always, the mass of the reactants equal the mass of the products.
Thus, since he measured the mass of his reactant materials to be 35g and he reported that his products weighed 32g, his data are in clear contradiction of the law of conservation of mass. So, there is an error in his results: the mass of the reactants should equal the mass of the products.
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We have that "J.J. Thomson proposes a new model of the atom" statement refers to the Plum Pudding model by the scientist J.J. Thomson.
From the question we are told
Thomson proposes a new model of the atom?
Generally
- J.J. Thomson was a scientist that dedicated his lives work to studding atoms and its particles
- J.J. Thomson is most famous for his evolutionary work with the cathode ray tube
- The Cathode ray tube gave rise to the discovery of the electrons at that time was called little negatively charged particles within the atom
- This caused J J Thompson to propose a law which stated that atoms where particles which were made up of negative charge around Positive charges
- This was called Plum Pudding
Therefore
"J.J. Thomson proposes a new model of the atom" statement refers to the
Plum Pudding model by the scientist J.J. Thomson.
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