1.How does a triple-beam balance differ from an electronic balance? A. It does not use a spring B. It is an analytical balance C.  It is not an analytical balance D.  It does not use counter weights

Q: 45. The process of removing an appropriate number of items from a population in order to make…

A: Any drug requires a variety of quality analysis to be performed prior to its final production.

Q: A patient provides a urine sample. The density of the patient's urine is 1.0160 g/mL. What is the…

A: Specific gravity of a substance is the density of that substance with respect to reference. The…

Q: To analyze the residual toxins and sugar content of a sample of a fruit, propose and discuss the…

A: When two more substances exist in a solution with definite proportions, it leads to the formation of…

Q: _____1. Which of the ff you can NOT use to measure liquids? a) beaker b) serological pipet c)…

A: Laboratory apparatus

Q: The density of a liquid was determined by the automatic pipette method. A 100-μL automatic pipette…

A: Density is defined as the mass per unit volume. If the material has higher density, the number of…

Q: B) List five of tools and instrumentations that you have used in the analytical chemistry Lab.

A: Given : Analytical chemistry lab To find : Five tools and instruments  Solution : As we know that,…

Q: Given that three trials revealed the # of drops in 1.0 mL with a fine tip pipette were 19 drops, 23…

A: Average value of drop per milliliters can be calculated as follows-

Q: 16. Rifampin is dosed as 20 mg/kg/day divided into two doses. If the child weighs 55 pounds, what…

A: Rifampin is dosed as 20 mg/kg/day

Q: For the separatory funnel shown in the Student Protocol video, the closed position of the stopcock…

A: The separatory funnel is also known as separating funnel and is an apparatus used in laboratories or…

Q: Filtration can be tedious especially if it takes a while for the filtrate to flow. As a laboratory…

A: In the given question there is a need to suggest some methods which can help in the waiting time…

Q: One millicurie is smaller than one becquerel. true false swer Try Another Version

A: The activity of a radio active element can be expressed in terms of millicurie and becquerel.

Q: Last 2 subparts needs solving

A: We have ask to identify electrophile and nucleophile in the given reaction and also ask to write the…

Q: vapo Select one: O China Dish (Diameter = 4.5 cm) %3D O Boiling Tube (Diameter = 1.5 cm) O Beaker…

A: Applying concept of area of contact ,since all vessel have circular bottom hence area of contact…

Q: 1. Define tensile strength? 2. Why is it important to test the tensile strength of materials? 3. The…

A: 1. Usually when a material comes under stress or strain it tends to break.So the ammount of load or…

Q: Which of the procedures, if either, is more accurate when making a 1/501/50 dilution of a solution?…

A: Since there are multiple questions, we will answer only the first one. If you require the answer of…

Q: crayon

A: You can see this scale is cm ( centimetres ) so that C and E option are incorrect because of in this…

Q: The filtration techniques was used in limiting experiment:

A: Find the solution given below

Q: not

A: We will. Calculate concentration of OH-

Q: 1. A 100 mL beaker was weighed on a centigram balance. Looking at the photo to the right, record its…

A:

Q: 5. What is the importance of standardization on this experiment 6. At the end of the experiment how…

A: Why the standardization is important in the experiment explanation given below.

Q: .How many types of hardness Two. O Three. O Four. O

A: There are two types of hardness, Temporary hardness Permanent hardness

Q: 0. mL volumetric flask and dilutes to the mark v ence point. Round your answer to 3 significant d

A: moles of citric acid = ( mass / molar mass of citric acid )  moles of Citric acid = ( 0.133g /…

Q: the measurement uncertainty of the above instruments, which instruments would yield

A: In this question we have to choose instruments would yield the lowest percent error on the…

Q: Salt bridge pog CufNo). AgNOs IM

A:

Q: If a beaker is weighed on a plus or minus 0.01 gram precision balance to be 152.63g and the beaker…

A: Given : Weight of beaker = 152.63 g Precision of beaker weight = 0.01 g Weight of beaker with test…

Q: One of the treatments of water for domestic use is to allow the water into large tanks where a…

A:

Q: How should goggles be worn in a chemistry lab? A. Over your eyes during the entire lab work is going…

A: Question : When googles should be worn in a chemistry lab.

Q: What volume of iron (density 7.87 g/cm3) would be required to balance a 2.80 cm3 sample of lead…

A: Given- Density of iron = 7.87 g/cm3 volume of lead sample = 2.80 cm3 (V1) Density of lead = 11.4…

Q: If you have multiple analytical balances to use during a lab, why do you think it is important to…

A: Because our analytical balance is calibrated according to your needs so if we use different…

Q: An infant ibuprofen suspension contains 100 mg per 5.0 mL suspension.  The recommended dose is 10 mg…

A:

Q: 8. 19.88 km : nm %3D

A: Unit conversion : two equivalent quantity expressed in two different units, related by a unit…

Q: This is a picture of a 100-mL graduated cylinder. The value for 'x' says 40 mL and the value for 'y'…

A: A graduated cylinder, also known as measuring cylinder or mixing cylinder is a common piece of…

Q: What piece of equipment should you use in order to obtain the mass of the weighing form? A…

A: A triple beam balance is used to measure mass of the weighing form with precisely. If you want to…

Q: Calculate the volume of liquid in the test tube sketched below. Give your answer in milliliters, and…

A:

Q: Which construction would you never use in the laboratory? (A) (B) (C) (D) (E) Construction D…

A: Different types of equipments are used in the laboratory such as beaker, flask, pipette, burette,…

Q: Specific gravity of acetone = 0.791. How much volume of acetone are in 50.0 g?

A: Given: The specific gravity of acetone = 0.791. The mass of acetone = 50 g. The density of water = 1…

Q: Preparations of Solution by Chemical Reaction are classified as extractives. a)true b)false

A: Given: Preparations of solution by chemical reactions are classified as extractives.

Q: Can you give 5 laboratory apparatuses examples on each classifications?

A: A. Measuring type : In laboratory many measuring cylinder are used. These are used to measure liquid…

Q: Determine the percent error for your laboratory

A: m=0.13g  C= 4.184 J/g°C ∆T=34.8 - 23=11.8°C Heat q= mc∆T             =0.13*4.184*11.8=6.41J…

Q: Describe three (3) source of error in weighing.

A: There are various kinds of errors-  1- instrumental error 2- personal error 3- random error

Q: Finish each statement about laboratory safety so that it correctly states a safety rule.a. Study…

A: a) Study your lab assignment and follow the instructions. It is essential to clear all doubts…

Q: 12.4 mL of a urine sample has a mass of 0.13 g. What is the specific gravity of the sample. Report…

A: we have to calculate the specific gravity of urine sample

Q: Compare the pair sample number 1 and 4 in terms of their use

A: A question based on general chemistry that is to be accomplished.

Q: as a laboratory analyst how can you reduce your waiting time during filtration

A: Filtration  is done so as to avoid The unwanted  side products .

Q: Find the volume and density of an irregular piece of the mineral quartz is found to weigh 12.4g. It…

A: According to the question: mass of mineral quartz = 12.4g Volume of water in the cylinder= 25.2 mL…

Q: Chemistry Draw the reflux and successive filtration equipment. Identify each piece of equipment.

A:

Q: 7.68 kg of chrome yellow to picograms (pg).

A: Picogram is the one of the unit of measurements of weight.

Q: What is the laboratory equipment that is best suited to accurately measure large volume of liquids?…

A: 1. Graduated cylinder is best used for measuring large volumes.

Q: Stock strength of a drug is 50mg/2ml a client weight is administered 25mg/ kg what volume of drug…

A: Here is your solution

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.