Homework Answers
Correct option:
Only acidic ingredients will lower the pH. Among the ingredients, NaCl is neutral. NaHCO3 and NH3 are basic substances. Hence, the correct option is the 1st option which is citric acid.
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Question: You decide to use a pH strip to test the tap water in
your home....
Mass of Magnesium strip Use the length of your magnesium strip and the mass per m...
Mass of Magnesium strip Use the length of your magnesium strip and the mass per m provided by your TA to calculate the mass of your magnesium strip. Make sure to convert so that your units match! Mass of magnesium strip Moles of magnesium used Convert the mass of each magnesium strip into moles using the molar mass. Moles of magnesium Moles of hydrogen produced (n) Use the mole ratio from the balanced chemical equation to convert the moles magnesium...
You decide you should fix some stuff around your home since you are stuck there. While...
You decide you should fix some stuff around your home since you
are stuck there. While doing some pretty awesome and sophisticated
changing-the-light-bulb work, your dog’s start freaking out about a
squirrel and bump your ladder. You fall and hurt your shoulder.
Luckily, you have a chemical hot pack in your medicine cabinet. You
activate it, it warms up, you put it on your shoulder, and then you
settle in for some chemistry investigations. (Background)
You look up the chemical...
I could really use help for question 1 and 2! Thank you in advance :) MATERIALS...
I could really use help for question 1 and 2! Thank you in
advance :)
MATERIALS AND EQUIPMENT . 1 - pH probe w/LabQuest . 1 - 100 ml beaker . 1 - stir bar • 1 - stir rod • 3 - medium beaker • 2 - 30 mL beaker CHEMICALS • sodium carbonate, NaHCO3 • 0,1 M hydrochloric acid, HCI • 0.85% lactic acid • dry ice • ammonium chloride, NHACI assigned acid assigned conjugate base • 6...
You are trying to decide whether to use the $12,200 standard deduction or your itemized deductions...
You are trying to decide whether to use the $12,200 standard deduction or your itemized deductions (Schedule A) on your Form 1040, Line 9. Here is your information: Adjusted Gross Income $40,000 Medical Expenses $15,000 Interest on Student Loan $2,000 Interest on Home Mortgage $3,000 State and Local Income Taxes Paid $1,500 Charitable Gifts (in total) $1,000 Which deduction should you choose? A Itemized Deduction of $17,500 B. Itemized Deduction of $10,500 C. Itemized Deduction of $22,500 D. Standard...
(2.4pts) Discussion- Question 2 Suppose you want to test for the presence of lead coming from two different sinks i...
(2.4pts) Discussion- Question 2 Suppose you want to test for the presence of lead coming from two different sinks in your home. Consider the techniques used in this and previous experiments to answer the following questions.. (0.6pts) a. How could you determine whether lead, specifically, was or was not present in each sink? X X Normal B IU EE (1pts) b. Assuming both sinks tested positive for the presence of lead, how could you determine which sink has a higher...
Question 2 (7.5 marks total) You need a new roof on your old home. You employ...
Question 2 (7.5 marks total) You need a new roof on your old home. You employ William, the owner of a sole trader roofing business, to do the job. Although William's quote was the lowest you received, you picked him because he was highly recommended by several friends. You were sure the low quote did not suggest a low quality job. As it turned out, you were right. William works alone so you chatted with him during lunch breaks to...
Use the following to answer questions 1-4. You currently live (rent free) in your parents' basement...
Use the following to answer questions 1-4. You currently live (rent free) in your parents' basement but it's a bit awkward when you bring dates home. Your friends are looking for a new roommate and have asked if you're interested in moving in. Your share of the rent (which includes all utilities) will be $1,000 per month, due at the beginning of the month, and you will be signing a three-year lease. You parents think you should save your money...
Use the following to answer questions 1-4. You currently live (rent free) in your parents' basement but it's a bit awkwa...
Use the following to answer questions 1-4. You currently live (rent free) in your parents' basement but it's a bit awkward when you bring dates home. Your friends are looking for a new roommate and have asked if you're interested in moving in. Your share of the rent (which includes all utilities) will be $800 per month, due at the beginning of the month, and you will be signing a two-year lease. You parents think you should save your money...
For the preparation and standardization of NaOH with KHP im supposed to boil water for 1hr and 30 min to remove CO2
For the preparation and standardization of NaOH with KHP im supposed to boil water for 1hr and 30 min to remove CO2....the problem is that if I don't boil it for that long and (30 min) b/c of not enough time but I put the water I boiled for 1/2 hr aproximately into a NaOH bottle with a CO2 absorber and stored it there for a few days. I would assume that I would have to boil the water again...but...
I added everything thing. this is the lab question you need to solve. First assigned buffer...
I added everything thing.
this is the lab question you need to solve.
First assigned buffer pH: 2.031 Second assigned buffer pH: 9.171 Available Buffer Systems (acid/ base) pka of Conjugate Acid 2.847 4.757 malonic acid/ monosodium malonate acetic acid/ sodium acetate ammonium chloride/ ammonia triethylammonium chloride/ triethylamine 9.244 10.715 1) Buffer system details: Given pH Name and volume conjugate acid Name and volume conjugate base 2) Calculations for preparation of high capacity buffer system. Introduction In this experiment, you...
Mass of Magnesium strip Use the length of your magnesium strip and the mass per m provided by your TA to calculate the mass of your magnesium strip. Make sure to convert so that your units match! Mass of magnesium strip Moles of magnesium used Convert the mass of each magnesium strip into moles using the molar mass. Moles of magnesium Moles of hydrogen produced (n) Use the mole ratio from the balanced chemical equation to convert the moles magnesium...
You decide you should fix some stuff around your home since you
are stuck there. While doing some pretty awesome and sophisticated
changing-the-light-bulb work, your dog’s start freaking out about a
squirrel and bump your ladder. You fall and hurt your shoulder.
Luckily, you have a chemical hot pack in your medicine cabinet. You
activate it, it warms up, you put it on your shoulder, and then you
settle in for some chemistry investigations. (Background)
You look up the chemical...
I could really use help for question 1 and 2! Thank you in
advance :)
MATERIALS AND EQUIPMENT . 1 - pH probe w/LabQuest . 1 - 100 ml beaker . 1 - stir bar • 1 - stir rod • 3 - medium beaker • 2 - 30 mL beaker CHEMICALS • sodium carbonate, NaHCO3 • 0,1 M hydrochloric acid, HCI • 0.85% lactic acid • dry ice • ammonium chloride, NHACI assigned acid assigned conjugate base • 6...
(2.4pts) Discussion- Question 2 Suppose you want to test for the presence of lead coming from two different sinks in your home. Consider the techniques used in this and previous experiments to answer the following questions.. (0.6pts) a. How could you determine whether lead, specifically, was or was not present in each sink? X X Normal B IU EE (1pts) b. Assuming both sinks tested positive for the presence of lead, how could you determine which sink has a higher...
Question 2 (7.5 marks total) You need a new roof on your old home. You employ William, the owner of a sole trader roofing business, to do the job. Although William's quote was the lowest you received, you picked him because he was highly recommended by several friends. You were sure the low quote did not suggest a low quality job. As it turned out, you were right. William works alone so you chatted with him during lunch breaks to...
I added everything thing.
this is the lab question you need to solve.
First assigned buffer pH: 2.031 Second assigned buffer pH: 9.171 Available Buffer Systems (acid/ base) pka of Conjugate Acid 2.847 4.757 malonic acid/ monosodium malonate acetic acid/ sodium acetate ammonium chloride/ ammonia triethylammonium chloride/ triethylamine 9.244 10.715 1) Buffer system details: Given pH Name and volume conjugate acid Name and volume conjugate base 2) Calculations for preparation of high capacity buffer system. Introduction In this experiment, you...
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