What does the first law of thermodynamics state? a) Energy in the universe Is co

Question

What does the first law of thermodynamics state? a) Energy in the universe Is constant. b) In a spontaneous process, the entropy of the universe increases. c)The entropy of a system approaches a constant value as the temperature approaches zero. d)Spontaneous reactions are always exothermic. 7)You observe the relationship between A and B and realize that if A increases B decreases.What equation would best describe this relationship? a)A = kB, with k>O b) A = klog(B) c) A = kB,with k>O d)A = k/B 8)A catalyst speeds up the reaction and is NOT consumed during the reaction a)True b)False 9)You are given the task to analyze a certain substance for its elements. You find out that your substance contains 0.5 g of carbon, 2 grams of oxygen and 0.3 grams of hydrogen. What type of analysis did you perform? a)Qualitative b)Quantitative - c)Both d)Neither 10) What does Charles' Law describe? a)Relationship between volume of a gas and the number of moles of a gas at constant pressure and temperature. b)Relationship between pressure and volume at constant temperature and number of moles of gas. c)Relationship between pressure and temperature at constant volume and number of moles of gas. d)Relationship between temperature and volume at constant pressure and number of moles of gas. ? Fill in the blanks (1 pt each) 11) Balance the following chemical equation. 1/Na_3Po_4 + 3/HCl rightarrow 3/NaCl+1/H_3PO_4 2) Theoretical Value of density of water at room temperature: 0.997 g/ml Experimental Value: 1.134 g/mL Percent error is

Explanation / Answer

If the components of the substance were unknown, then we will be having a quantitative and qualitative analysis. If the components were known, we will only have a quantitative analysis. As the question doesn't specify if they were known, and it is specified that it was certain substance, then I would say your have both, quantitative and qualitative analysis.

Charle's law describes the relation between volume and temperature at constant pressure and moles -> V/T = k

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