Explanation:
The reaction is as follows:
2Mg(s) + O2(g) ---> 2MgO(s)
and the researcher said that 32 g of MgO was produced.
Stoichiometry:
28 g Mg × (1 mol Mg/24.305 g Mg) = 1.15 mol Mg
15 g O2 × (1 mol O2/15.999 g O2) = 0.938 mol O2
1.15 mol Mg × (2 mol MgO/2 mol MgO) = 1.15 mol MgO
1.15 mol MgO × (40.3044 g MgO/1 mol MgO) = 46.6 g MgO
0.938 mol O2 × (2 mol MgO/1 mol O2) = 1.88 mol MgO
1.88 mol MgO × (40.3044 g MgO/1 mol MgO = 75.6 g MgO
Based on these numbers, the amount of product after the reaction is much less than expected so these results don't seem to support the law of conservation of matter.
Answer:
My experience in/with scienceI begin with what I believe science means to me. Science is the natural world around me&emdash;trees, animals, earth, air, people, flowers, birds, machinery, working tools. As a nurse science also means the body and how it is made and functions. How illness occurs and how we heal, how the mind thinks.
My experience with science began as a child. My father and mother both had scientific interests&emdash;gardening, astronomy, archery, fishing, outdoors, farming. I was a girl guide so camping, fires etc. were interesting to me.
Nursing started out as science&emdash;physiology and medications, surgery and healing. I grew older and began to realize that all these things I saw as science were actually connected to people and people were all unique and wonderful. The rules of science don't fit with people&emdash;because each person has a different relationship with the rules of science and often-mysterious things happen.
Health that started out as an experimental hard scientific definition has now become a word with meaning&emdash;different for each person. In my practice health is a central focus and I am wanting to learn how to facilitate health for the people that I come into contact with. I have learned that what I do to people to facilitate their health and wellness contributes minimally towards their capacity of health&emdash;but what I do with people has more potential to support their being healthy or their perceiving health.
I see science now from this broader perspective and look forward to working and learning in my personal and professional life in this manner. Science defined in this way opens many more doors to understanding people and the world that we live in. I think that this meaning of science also assists me to grow as a person in my view of the world I live in.
Answer:
Gas
Explanation:
If you move a substance from one container to another and its volume changes, the substance is a gas. This is because, gases do not have fixed volume and shape; their shape and volume depend on the container used.
Answer: For the given reaction an increase in the forward reaction rate due to increase in the number of effective collisions.
Explanation:
According to the rate law, rate of a reaction depends on the concentration of its reactants. So, more is the number of reactants then more will be the number of collisions taking place.
As a result, more will be the amount of product formed. For example, in the reaction an increase in means an increase in the number of reactants.
Hence, more is the number of collisions taking place leading to more amount of formation of products.
Thus, we can conclude that for the given reaction an increase in the forward reaction rate due to increase in the number of effective collisions.