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So why are models useful A theory (a model) is a well tested argument that is not 100% accurate, but they are widely accepted and non disputable (1) Describe how you would set up an experiment to test the relationship between completion of assigned homework and the final grade you receive in the course. They re simplifications and therefore incorrect at some level.
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(1) Scientific models do not describe reality. A scientific theory is a well-substantiated explanation of some aspect of the natural world that is acquired through the scientific method and repeatedly tested and confirmed through observation and experimentation.
#CHEMICAL EQUATION BALANCER PROBLEMS GRADE 8 PLUS#
TERMS IN THIS SET (100) (1) Make five qualitative and five quantitative observations about the room in which you now sit The answer depends on the student's experience (1) Differentiate between a "theory" and a "scientific theory" A theory ( model) is a set of tested hypotheses that gives an overall explanation of some part of nature. A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulae, wherein the reactant entities are given on the left-hand side and the product entities on the right-hand side with a plus sign between the entities in both the reactants and the products. = 15.85M ?Given a solution of NH3(aq) 15.85 mol L-1 find the concentration of NH3(aq) in % by mass? d=0.9 per mL) fraction methods (units important)
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Lowest is O so it is limiting, divide everything by itġ:1 = C3H8O What is the molarity of a solution of NH3(aq) which is 30% by mass (density of solution 0.9 Find its empirical formula.įind its molecular formula if its molar mass is 60.094 g mol-1. Smallest moles is O so divide all moles by it TERMS IN THIS SET (55) 2.530g of a compound C, H O is burned in excess of oxygen to give 5.559g CO2 and 3.3034g H2O