Chemistry, 22.09.2019 02:30 jkenkw4667

According to the law of conservation of matter, which chemical equation represents a possible chemical reaction?
a. 2na cl2 nacl
b. h2o2 h2o o2
c. 6co2 h2o energy c6h12o6 6o2
d. c2h4o2 nahco3 nac2h3o2 h2o co2

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Answer from: nwatase

Answer : The possible chemical reaction is, (d)

$C_2H_4O_2+NaHCO_3\rightarrow NaC_2H_3O_2+H_2O+CO_2$

Explanation :

Law of conservation of matter : It states that matter can neither be created nor be destroyed but it can only be transformed from one form to another form.

The balanced chemical reaction always follow the law of conservation of matter.

Balanced chemical reaction : It is defined as the reaction in which the number of atoms of individual elements present on reactant side must be equal to the product side.

(a) The given chemical reaction is:

$2Na+Cl_2\rightarrow NaCl$

This reaction is an unbalanced chemical reaction in which number of atoms of sodium and chlorine are not equal on the both side of the reaction. So, this reaction will not obey the law of conservation of matter.

(b) The given chemical reaction is:

$H_2O_2\rightarrow H_2O+O_2$

This reaction is an unbalanced chemical reaction in which number of atoms of oxygen are not equal on the both side of the reaction. So, this reaction will not obey the law of conservation of matter.

$6CO_2+H_2O\rightarrow C_6H_{12}O_6+6O_2$

This reaction is an unbalanced chemical reaction in which number of atoms of hydrogen and oxygen are not equal on the both side of the reaction. So, this reaction will not obey the law of conservation of matter.

(d) The given chemical reaction is:

$C_2H_4O_2+NaHCO_3\rightarrow NaC_2H_3O_2+H_2O+CO_2$

This reaction is a balanced chemical reaction in which number of atoms of carbon, hydrogen, sodium and oxygen are equal on the both side of the reaction. So, this reaction obey the law of conservation of matter.

Hence, the possible chemical reaction is, (d)

$C_2H_4O_2+NaHCO_3\rightarrow NaC_2H_3O_2+H_2O+CO_2$

Answer from: Quest

2positives of biotechnology: 1. plants have become more resistant to viruses and other communicable pests.2. with the of biotechnology, we have been able to produce better tasting fruits as well as vegetables.2 negatives of biotechnology: 1. biotechnology poses a number of environmental threats. genetically modifies crops often infect monarch butterflies and other insect species.2. viruses could combine with crops.

Answer from: Quest

answer: the rate of diffusion increases with increase in temperature.

increase in temperature, increases the molecular/particles speed (kinetic energy. diffusion means movement of particles through the material.

generally, the heavier the particle the more it interacts with the environment and more the temperature matters. so higher temperature results in higher diffusion.

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