What species are present in solution in the largest amount
Hydrogen sulfide ion, HS-, is a weaker base than ammonia, NH3. When ammonia reacts with hydrosulfuric acid, H2S, what species are present in the solution in the largest amount?
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1.45 g sample of an iron ore is dissolved in acid and the iron obtained is fe2+ (aq). To titrate the solution, 21.6 mL of 0.102 M KMnO4(aq) is required. What is the percent of iron in the ore?
Fe203 is converted into metallic Fe plus H2O(g). If the residue weighs 1.774 g, what is the weight percent of Fe2O3 in the original mixture?
Vehicles arrive at a tollbooth according to the function λ(t) = 5.2 - 0.20t, where λ(t) is in vehicles per minute and t is in minutes. The toll booth operator processes one vehicle every 20 seconds.
The equation shows the combustion of butane (C4H10). How many moles of water can be produced by 12.5 moles of C4H10 with excess oxygen?
25.0 mL of ethanol (density = 0.789 g/mL) initially at 5.4°C is mixed with 34.6 mL of water (density = 1.0 g/mL) initially at 25.3°C in an insulated beaker. Assuming that no heat is lost, what is the final temperature of the mixture?
In certain cases calcium hydroxide and sulfuric acid react to produce calcium bisulfate and water. When 0.0720 mol H2SO4 are reacted with 0.0240 mol Ca(OH)2, how much calcium bisulfate is produced?
Suppose that 0.92 of water condenses on a 85.0 block of iron that is initially at 22. If the heat released during condensation goes only to warming the iron block, what is the final temperature (in ) of the iron block? (Assume a constant enthalpy
A canal is constructed parallel to a river 460m away both fully penetrating an unconfined aquifer of clean sand and gravel as shown. The aquifer has a hydraulic conductivity of k=18.5m/day and is subjected to an average infiltration of 1.6m/yr.
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The process of research and statistical analysis in psychology and Dombrowski, S. C., & Casey, C. (2022).
Choose one of the following developmental theorists and share how the applicable developmental stage for that theorist
When considering substance use, discuss their school counselor's role when working with students and families, PK-12 and postsecondary personnel
Identify the main concepts; often the "keywords" help identify main concepts Provide the research question(s) and/or hypotheses (word-for-word)
Past research suggests that academic major can be an indicator of environmental values (e.g., Ewert & Baker, 2001), and this study found
Read the excerpt from Pat Mora's essay "The Leader in the Mirror." I hoped that most of the students were going to enroll in college.
It's currently just an idea, but you've been tapped to lead the cross-functional team that will investigate that idea.