Concept explainers
Match the key terms with the descriptions provided.
(a) a member of one of the B groups of elements in the periodic table
(b) a law stating that all samples of a pure compound always contain the same proportions of the component elements
(c) a negatively charged subatomic particle
(d) an ion with a negative charge
(e) a neutral particle consisting of two bound atoms
(f) any element in group VIIIA (18)
(g) a set of elements in the same horizontal row in the periodic table
(h) the number of protons in an atom
(i) the unit of mass used to describe single atoms or small numbers of atomic particles which is equal to one-twelfth the mass of a carbon-l2 atom
(j) a set of elements in the same vertical column in the periodic table
(k) any element in group IIA (2)
(l) the central core of the atom which contains the protons and neutrons and most of the mass of the atom
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Chapter 2 Solutions
ALEKS 360 AC INTRD CHEM >I<
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- A 8.25 g sample of aluminum at 55°C released 2500 J of heat. The specific heat of aluminum is 0.900 J/g°C. The density of aluminum is 2.70 g/mL. Calculate the final temperature of the aluminum sample in °C.arrow_forwardPredict the major organic product(s) and byproducts (either organic or inorganic) for thefollowing reactions.arrow_forwardPredict the major organic product(s) and byproducts (either organic or inorganic) for thefollowing reaction.arrow_forward
- please helparrow_forwardExperiment 1 Data Table 1: Conservation of Mass - Initial Mass Data Table 1 Data Table 2 Data Table 3 Data Table 4 Panel 1 Photo 1 Data Table 5 Reaction Mass of test tube and 5.0% HC₂H₂O2 (g) # (A) (B) Mass of NaHCO, (g) Mass of balloon and NaHCO, (g) (C) 0.10 1 0829 14.38g 0.20 2 0.929 14.29g 0.35 1.00g 3 14.25g 0.50 1.14g 14.29 Experiment 1 Data Table 2: Moles of HC2H3O2 Reaction Volume of Mass of Moles of HC₂H₂O₂ 5.0% Vinegar (g) (ML) 5.0 0.25 0042 mol 2 5.0 0.25 0042 mol 3 5.0 0.25 0042 mol 5.0 0.25 0042 mol Experiment 1 Data Table 3: Moles of NaHCO3 Reaction Mass of NaHCO (g) 10g 20g 35g 50g Experiment 1 Data Table 4: Theoretical Yield of CO₂ Reaction # 1 2 3 Experiment 1 Total mass before reaction (g) (D=A+C) 15.29 15.21g 15.25g 15.349 Exercise 1 Data Table 1 Data Table 2 Data Table 3 Data Table 4 Panel 1 Photo 1 Data Table 5 Exercise 1- Data Table 1 Data Table 2 DataTable 3 Data Table 4 Panel 1 Photo 1 Data Table 5 Exercise 1- Moles of NaHCO 0012 mol 0025 mol 0044 mol 0062 mol…arrow_forwardThe chemical reaction you investigated is a two-step reaction. What type of reaction occurs in each step? How did you determine your answer?arrow_forward
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