Based on your observations of the laboratory assignment(s) that resulted in a color change, can you...
Based on your observations of the laboratory assignment(s) that resulted in a color change, can you conclude that: a precipitate must form in order for a color change to occur? Explain briefly.
Homework Answers
Ans. During in a chemical reaction, observed in change in colour of the reaction doesnot mean that the precipitation has taken place. Colour change can also take place when we add an indicator to the solution and form colour. There are a precipitate which are white in colour like BaSO4, CaF2 etc.
For checking that the precipitation has occur or not, one should look on the bottom of the glass vessel.
Add Answer to:
Based on your observations of the laboratory assignment(s) that
resulted in a color change, can you...
2. Based on your experimental observations, what can you conclude concerning the distribution of succinate dehydrogenase?...
2. Based on your experimental observations, what can you conclude concerning the distribution of succinate dehydrogenase? Is the distribution what you would have expected? Explain why or why not.
Experiment 7 Report Assignment POSSIBLE POINTS: 2 You dissolve a small amount of your cobalt product...
Experiment 7 Report Assignment POSSIBLE POINTS: 2 You dissolve a small amount of your cobalt product in a few mL of water. When you added several drops of 0.1 M AgNo, to your cobalt complex, you observe that a white precipitate forms but the solution color does not change. Write a net ionic equation for any reaction taking place. Experiment 7 Report Assignment POSSIBLE POINTS: 2 You dissolve a small amount of your copper product in a few mL of...
Lab 11: Shadying E Halt Cells and Halt-R Pre-Laboratory Assignment ruse Table 1 as a source...
Lab 11: Shadying E Halt Cells and Halt-R Pre-Laboratory Assignment ruse Table 1 as a source of half-equations and reduction potentials for this assignment) 1. Rank the following metals by ease of oxidation, from hardest to easiest: Cu; aluminum, Al; Fe; and chromium, Cr shil 2. An Al strip is placed in Cuso, solution. ) Would you expect a spontaneous reaction to occur, based on the net potential? (2) If your answer to (1) is "yes," what would you observe?...
I just need help with number one, you can ignore the observations part of the page....
I
just need help with number one, you can ignore the observations
part of the page.
ILURI PURM Experimental Data Record observations and answer questions in space provided. Part I. Unsaturated, Saturated, and Supersaturated Solutions A. Observations with the sodium acetate test. B. Observations with the potassium chloride tests. Condition: A) 1. What happens when a few crystals are added to an unsaturated solution? Identify the situation in the experiment where an unsaturated solution existed. Explain. Laboratory 6 Solutions and...
I have a computer graphic assignment. For the unit 3 assignment you will demonstrate both your...
I have a computer graphic assignment. For the unit 3 assignment you will demonstrate both your ability to perform transformations on an object and implement principles of color in computer graphics. Beginning with the example program, create a program that will create a 3 dimensional objects. You can use the cube, sphere, or torus knot for this assignment. Your program must display the object within the scene. Your object should be scaled such that it only covers a small portion...
Complete and balance the equations. Include the physical states for element compound Record you observations before...
Complete and balance the equations. Include the physical states for element compound Record you observations before and after each reaction. You will use your observations to help you determine the activity of these metals. ons to help you determine the order of Complete Reaction Observations (1) Na+H2010) -2NaOH(aq) + H219) Bubbles, smoke & change i Celot Reaction took place Flames, smoke, bubbles & change in color, Reaction (2) K + H20 in- (3) Ca + H2O() (4) Mg + H2O...
please help with 2, 4, 6. thanks!! Activity 4: Observations and Interpretations NHCl(s) + H2O(l) +...
please help with 2, 4, 6. thanks!!
Activity 4: Observations and Interpretations NHCl(s) + H2O(l) + NH(aq) + Cl(aq) 1) What did you observe when you added the concentrated HCl solution to the saturated solution of ammonium chloride? White crystal precipitate formed 2) Interpret the observation in 1, in terms of the equation given above and LeChateliers Principle. 3) What did you observe when you placed this test tube in the boiling water bath? By adding heat, the precipitate went...
Observations Record observations including appearance of solution (clear, cloudy), color(s) of liquid and s...
Observations Record observations including appearance of solution (clear, cloudy), color(s) of liquid and solid phases, formation of gas, etc. Write a chemical equation for each to describe the reaction observed. Refer to the procedure for hints. A. Preparation of Copper(ll) Nitrate B. Preparation of Copper(1) Hydroxide C. Preparation of Copper(ll) Oxide D. Preparation of Copper(II) Chloride E. 1. Preparation of Copper Metal 2. Reaction of Aluminum with Hydrochloric acid to give Aluminum Chloride and Hydrogen gas. EXPERIMENT SA THE MANY...
Lab & EQUL 0441 Pre-Laboratory Assignment acidity or Briefly comment on the can be hazardous in w...
Lab & EQUL 0441 Pre-Laboratory Assignment acidity or Briefly comment on the can be hazardous in ways that are not necessarily related to their aware of when working with: () 1 x 10 'M HNO, solutions (2) 0.1M NHs/H,O solutions different but using 2. A student performed an experiment similar to the one that you will pertn Table 4 below ed in Table 4 solutions from the ones that you will use. The student's data are presente (1) Is a...
APPLICATION! 1. A nonscientist brings a water sample to your laboratory and asks you to determine...
APPLICATION! 1. A nonscientist brings a water sample to your laboratory and asks you to determine why there was a fish kill in the nearby lake. Having recently finished this experiment, what might you tell that person about the legitimacy of a test for dissolved oxygen? What reasoning would you use to maintain the integrity of your laboratory? 2. Fish kills are often found near the discharge point of water from cooling waters at electrical generating power plants. Explain why...
2. Based on your experimental observations, what can you conclude concerning the distribution of succinate dehydrogenase? Is the distribution what you would have expected? Explain why or why not.
Experiment 7 Report Assignment POSSIBLE POINTS: 2 You dissolve a small amount of your cobalt product in a few mL of water. When you added several drops of 0.1 M AgNo, to your cobalt complex, you observe that a white precipitate forms but the solution color does not change. Write a net ionic equation for any reaction taking place. Experiment 7 Report Assignment POSSIBLE POINTS: 2 You dissolve a small amount of your copper product in a few mL of...
Lab 11: Shadying E Halt Cells and Halt-R Pre-Laboratory Assignment ruse Table 1 as a source of half-equations and reduction potentials for this assignment) 1. Rank the following metals by ease of oxidation, from hardest to easiest: Cu; aluminum, Al; Fe; and chromium, Cr shil 2. An Al strip is placed in Cuso, solution. ) Would you expect a spontaneous reaction to occur, based on the net potential? (2) If your answer to (1) is "yes," what would you observe?...
I
just need help with number one, you can ignore the observations
part of the page.
ILURI PURM Experimental Data Record observations and answer questions in space provided. Part I. Unsaturated, Saturated, and Supersaturated Solutions A. Observations with the sodium acetate test. B. Observations with the potassium chloride tests. Condition: A) 1. What happens when a few crystals are added to an unsaturated solution? Identify the situation in the experiment where an unsaturated solution existed. Explain. Laboratory 6 Solutions and...
Complete and balance the equations. Include the physical states for element compound Record you observations before and after each reaction. You will use your observations to help you determine the activity of these metals. ons to help you determine the order of Complete Reaction Observations (1) Na+H2010) -2NaOH(aq) + H219) Bubbles, smoke & change i Celot Reaction took place Flames, smoke, bubbles & change in color, Reaction (2) K + H20 in- (3) Ca + H2O() (4) Mg + H2O...
please help with 2, 4, 6. thanks!!
Activity 4: Observations and Interpretations NHCl(s) + H2O(l) + NH(aq) + Cl(aq) 1) What did you observe when you added the concentrated HCl solution to the saturated solution of ammonium chloride? White crystal precipitate formed 2) Interpret the observation in 1, in terms of the equation given above and LeChateliers Principle. 3) What did you observe when you placed this test tube in the boiling water bath? By adding heat, the precipitate went...
Observations Record observations including appearance of solution (clear, cloudy), color(s) of liquid and solid phases, formation of gas, etc. Write a chemical equation for each to describe the reaction observed. Refer to the procedure for hints. A. Preparation of Copper(ll) Nitrate B. Preparation of Copper(1) Hydroxide C. Preparation of Copper(ll) Oxide D. Preparation of Copper(II) Chloride E. 1. Preparation of Copper Metal 2. Reaction of Aluminum with Hydrochloric acid to give Aluminum Chloride and Hydrogen gas. EXPERIMENT SA THE MANY...
Lab & EQUL 0441 Pre-Laboratory Assignment acidity or Briefly comment on the can be hazardous in ways that are not necessarily related to their aware of when working with: () 1 x 10 'M HNO, solutions (2) 0.1M NHs/H,O solutions different but using 2. A student performed an experiment similar to the one that you will pertn Table 4 below ed in Table 4 solutions from the ones that you will use. The student's data are presente (1) Is a...
Most questions answered within 3 hours.
-
Consider the following fitness regime for a single locus trait
with two co-dominant alleles: w11 =...
asked 2 minutes ago -
A large cable company reports the following.
80% of its customers subscribe to its cable TV...
asked 17 minutes ago -
Please answer the question in brief.
Discuss the role of ERP in organizations. Are ERP tools...
asked 3 minutes ago -
Discuss the pros and cons of collaborative software such
as SameTime. Does it increase productivity? What...
asked 15 minutes ago -
1. Are all good samples random?
2. Magazines often report surveys giving statistics such as “63%...
asked 11 minutes ago -
Buying your in-laws a gift because it’s expected is
due to the ____________ motive of gift-giving....
asked 19 minutes ago -
Calculate the expected value, the variance, and the standard
deviation of the given random variable X....
asked 1 hour ago -
A hospital performs 100 surgeries per week. The probability that
complications after surgery occur is 10%....
asked 1 hour ago -
1 point) Given the significance level α=0.01 find the following:
(a) left-tailed z value z= (b)...
asked 1 hour ago -
Assuming you are the head of the software development unit at
Cyber.Soft, explain and justify why...
asked 26 minutes ago -
Magnesium and nitrogen react in a combination reaction to
produce magnesium nitride. 3 Mg + N2...
asked 34 minutes ago -
Two electrons are initially at rest separated by a distance of
2nm. At time t=0, they...
asked 32 minutes ago