Choose the correct option for each question below The following statements are true except 1) Always tidy up your lab bench and make sure the equipment is ready for the next class.   2) Dispose solid chemicals down the sink.  3) Never insert your personal pipette into community reagent bottles.  4) Each person working in the laboratory must wear a lab coat.

Q: Directions: Write down the ingredients AND steps on how to make your favorite recipe. Draw AND color…

A: A question based on commercial use of chemicals, which is to be accomplished.

Q: Chemical wastes (Aqueous) should be stored in wash bottles. True or False? Please explain.

A: It is inevitable that some chemical residue will be produced during routine laboratory activities.…

Q: a table

A: So , the table is given bellow where we described how much of  the…

Q: Step 2: In a reply below, answer the following prompt. Be sure to respond to the thoughts of your…

A: Solutions- The correct option is 1 or A. A decrease in weight from chicken piece 1 to 4.

Q: The concentration of the stock glucosamine solution is 100 mM. A student took 0.5 ml of this stock…

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A: From the above table. The following conclusions are given

Q: When working with chemicals in the laboratory, which is something you should NOT do?A. Read the…

A: Chemicals have hazardous effects. They may cause skin burning, irritation in skin and the vapor of…

Q: Which statement is false regarding labels on chemical containers? a. labels tell the embalmer how…

A: Label is an indicative of hazardous behaviour and precurtions need to be employed during use.

Q: Pick one to respond to. Why does salt added to a road before snow help but salt added after snow do…

A: When salt is sprinkled on the road before a snow then a phenomenon takes place which is freezing…

Q: Choices: Solute and Solvent Caffeine in a cup of coffee ...........Solute Nitrogen in the…

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Q: Why is NaOH(s) to be taken out and weighed only when you are ready to make measurements? Group of…

A: Concept: NaOH is hygroscopic in nature. It easily absorbs moisture from the air.

Q: The soda ash dose necessary to soften this water to 90 mg/ as CaCcO3 if the soda ash is 90% pure is…

A: CaCO3 = 90mg/l

Q: Calculate the cost per individual molecule of your pain reliever. Acetaminophen has the chemical…

A:

Q: POSTLAB QUESTI 1. If you were given would do to pro each test.

A:

Q: Question 2 Density is the ratio of the volume of a sample to its mass. mass density = volume What's…

A: density is defined as mass per unit volume. Density is vary from element to element.

Q: Fill out this reagent table

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Q: o summarise large amounts of water quality data for a specific r

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Q: 5. What are the properties of water that make it important for life? The substances that we are…

A: Water has many properties that makes it important part of life like universal solvent, high heat…

Q: Refill the burette with the standardized 0.5 M NaOH solution provided. Record the initial volume of…

A: Moles of NaOH required = Moles of vinegar (acetic acid) neutralized

Q: 1-What do you already do to use less water and pollute water less? 2/Are there any DIFFERENT, new…

A: Water is an utmost necessity of human life without which our existence is questionable. Thus, the…

Q: Complete the tables Direction: Write your answer in a clean and sheet of paper. 1 Na₂S + HCI NaCl +…

A: Here we are required to balance the reaction

Q: For what anions are most of the compounds usually soluble?

A: "X" in the table indicates the compounds that are insoluble in water. Look for a row with the…

Q: Look for the following two things about water treatment (not wastewater). for each, Q1 1. One of the…

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Q: 5. Answer only True or False? If a saturated hot solution is allowed to cool, the solute is no…

A: In this question, we have to discuss about the crystallization process and answer the question…

Q: Glucose(C6H1206) reacts with oxygen gas to produce gaseous carbon dioxide and water vapor Glucose:…

A: Number of atom of each elements on the reactant side should be equal to the number of atom each…

Q: 3. Reagent water Concentration of Stock to Prepare Calculate the grams of chemical needed for each…

A: Percent w/v solution is calculated with the following formula . % w/v = g of solute/100 mL of…

Q: 2) In this lab we will be working with solutions, which are homogenous mixtures of two or more…

A: Given: Mass of NaCl = 15.0 g. And volume of solution = 250 mL.

Q: If the caffeine concentration in a particular brand of soda is 3.39 mg/oz, drinking how many cans of…

A: 1 gram(g) = 1000 mg. So , 1 mg = 10-3 g. 3.39mg caffeine / 1oz or 3.39 x 10-3 g caffeine / 1oz

Q: 2. Water is the universal solvent. A. Why is water considered the greatest solvent on Earth? B. Draw…

A:

Q: How do contaminants transfer within an ecosystem or between ecosystems?

A: A substance that pollutes or contaminates a system is called a contaminant. It can be toxic or…

Q: Eating and/or drinking inside the laboratory should be avoided. If the hands become contaminated…

A: Given: Eating and/ or drinking inside the laboratory should be avoided.If the hands become…

Q: Fill in the blanks: Fill in the correct answer to complete the tables/spaces below. 34. Draw what…

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Q: Most of us have had a glass of water from a Brita® pitcher. What is inside of a Brita® filter…

A: The Brita filter cartridge is composed of copolymer of styrene methyl methacrylate.

Q: Express your answer with three significant digits. Do not include units! g/mol A sample solution has…

A: According to the question we have a sample of solution whose concentration is given which is, The…

Q: why do we use carbon monoxide monitors indoors? In normal situations is carbon dioxide considered A…

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Q: You have just made an aqueous solution of sodium bicarbonate. Now to

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Q: In your own words describe the operation of a clinical Laboratory

A:

Q: Write a 1-page written plan on how you would specifically address the effects water bottles have on…

A: Water bottles leaves a great impact on the global ecosystem.

Q: how to I convert 10mg/L (10ppm) of nitrate (NO3-) to molar mass of nitrate?

A: 1 ppm=1 mg/L  (Given) 10 ppm=10 mg/L = 10 * 10(-3) g/L = .01 g/L At NTP, 1mol = 22.4L => 1L =…