A chemistry instructor provides each student with 8 test tubes at the beginning of the school year. If there are 28 students per class, how many test tubes are required for three chemistry class?

Q: What is one example of systematic error that can occur in an experiment and one example of random…

A: The difference between true value and an measured value of an experiment is known as errors. If any…

Q: The image above shows a student mixing two chemicals. Is she following safe laboratory practices?…

A: We are given an image of a girl mixing two chemicals:

Q: In a laboratory, a student calibrates a 25 mL pipette to use throughout a semester. She accidentally…

A: Generally this breakage happens. So if this happened she should pay the fine according to…

Q: I want to make sure my math is correct for the first few problems and I want to know how to solve…

A:

Q: NaOH buret 2nd reading 29,45 32.05 NaOH buret 1st reading 0,02 mL 0.01 mL Slighty derker pinh Light…

A: Formula used : RSD = s ×100x¯ where, RSD = Relative Standard Deviations = Standard Deviation x¯=…

Q: A beaker containing a green liquid is left uncovered in a laboratory for one week., After the liquid…

A: Mixture is a combination of two or more different chemical substances that are not combined…

Q: How many low dose 81mg aspirin tablets can be made from 1.21 kg of aspirin? 1.5×10^3 tablets…

A: • The values provided in the question are:-  i) Total mass of aspirin = 1.21 kg    ii) Mass of one…

Q: You record the following in your lab book: a liquid is thick and has a density of 4.58 g/mL. Which…

A: Given data, A liquid is thick and has a density of 4.58 g/mL. Which data is qualitative and…

Q: What is the importance of using laboratory equipment and apparatus?

A: Given : Laboratory equipment and apparatus To find : Importance of Laboratory equipment and…

Q: chemistry

A: Chemistry – Chemistry is a branch of science, it is related to elements, compounds, their…

Q: What is this student's overall grade in the course?

A:

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: Why are laboratory safety rules important?

A: While working in the laboratory as a chemist it is very necessary to be familiar with your…

Q: In any chemistry laboratory course, apparatus and equipment are essential to perform the required…

A: CUTTING OF GLASS TUBE AND GLASS ROD Material Required• Soda-glass tube: 15 cm long• Soda-glass rod:…

Q: Differentiate between filtration and decantation. Which is more effective

A: We will differentiate between filtration and decantation.

Q: 1. What are the classifications of laboratory apparatus?

A: Laboratory apparatus are very important for learning practical knowledge of chemistry. Its like…

Q: 4. How do you distinguish a. Chemical properties from physical properties b. Distillation from…

A:

Q: Volume of water in gradudated cylinder:33.8 mL Volume of water plus pellets:41.8 mL Volume of…

A: Given Volume of water in gradudated cylinder:33.8 mL Volume of water plus pellets:41.8 mL

Q: 8) The vessel to be weighed should be placed of the pan. (off to the side, or in the center) 9)…

A: 8. The vessel to be weighed should be placed in the center of the pan.  For proper weighing, vessel…

Q: List all pictograms that are not hazard symbols but are seen in the laboratory

A: A pictogram is a chart which uses pictures to represent data in a simple way. The list is as…

Q: what is the importance of chemistry for medical students?

A: Chemistry- Branch of science which deals with the study of chemical properties of elements, their…

Q: A cement mixer can produce 88.20 pounds of cement mix for 27 minutes. How many hours would it take…

A:

Q: (b) Calculate: (24 x 4.52) 100.0

A: Rules for significant figure All non zero integer are significant Exact number have unlimited…

Q: The theoretical density of metal is 2.70g/ cm cube. The experimental density a student found in the…

A: We have to calculate the percentage error.

Q: 2- Quantitative is branches of analytical chemistry

A: Note :  I have been asked to provide the solution of question number 2 only

Q: Gas volume is 29.96 cc, oil volume is 29.96 cc, and water volume is 25.68 cc. Calculate oil…

A: we have, Gas saturation (Sg) = Vg ÷ Vp Oil saturation (So) = Vo ÷ Vp Water saturation (Sw) = Vw ÷ Vp…

Q: How many picograms are in 4.28 x 10^-11g?

A: 1 picogram = 10-12 grams

Q: 6. What is the difference between ACCURACY and PRECISION?

A: Accuracy:The measurement of how close the calculated value to the standard value is said to be…

Q: Two liquids, A and B are immicible. Liquid A has a density of 0.89 g/mL. Liquid B has a density of…

A: The solution is given below -

Q: What are the Safety Measures/ Precautions in the Science laboratory and classroom while doing a…

A: In this question we need to answer what are the precautions or safety measures that must be kept in…

Q: Given the following information determine the % difference between the two weights. Trial 1 Weigh…

A: Given that --- Trial 1: weight of boat + sample = 14.85 g  --------(i) weight of boat = 11.11 g…

Q: How many Calories are in 4406 J? Round to two decimal places.

A: The magnitude of a quantity in one unit can be converted to the other unit by addition, subtraction,…

Q: The usual dose of digoxin for rapid digitalization is a total of 1.0 mg, divide into two or more…

A: Given : Total dose of digoxin = 1.0 mg  And concentration of digoxin solution = 50 mcg/mL

Q: What are the similarities in random error and systematic error? In analytical method and graphical…

A: Answer - Random error - Random error is a chance difference between the observed and true values of…

Q: What are the examples of Quantitative Chemistry?

A: Interpretation: The examples of Quantitative Chemistry are to be provided.

Q: An example of a case where you used the scientific method to solve a real-life issue.

A: SCIENTIFIC METHOD A technique known as the scientific method was developed in the seventeenth…

Q: [H*] [OH"] pH pOH 1. 32. 9.5 | 33. 4. 35. 36. 8.1 7. 38. 6.9 39.

A:

Q: 1. Describe the importance of chemistry for your department in one paragraph.

A: Importance of Chemistry: Chemistry is a branch of science that deals with the composition,…

Q: What is the difference between a qualitative and quantitative measurement?

A: The difference between a qualitative and quantitative measurement it to be explained. Qualitative…

Q: Real-World Chemistry 1. Suppose you wanted to ship bananas from Puerto Rico to New York and the time…

A: It is given that the bananas need to be shipped from Puerto Rico to new york which takes 8 days.…

Q: How many picograms are there in 3290 kg?

A:

Q: a certain med was available 0.50gm/100mL. A doctor prescribed a dosage of 15 mg to be delivered by…

A: Given Data: Available medicine = 0.5 gm/100 ml Prescribed dose = 15 mg/hr To Determine: Volume of…

Q: Convert 26.31 mg into amu, using dimensional analysis.

A: The question is based on the concept of dimensional analysis. we have  to convert the given quantity…

Q: What are the applications of calculus in chemistry?

A: Thermodynamics is defined as branch of chemistry which deals with conversion of heat into work.

Q: History of chemistry

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Q: 1. Compare physical and chemical properties. 2. Why is it necessary to state the specific…

A: Physical and chemical properties of matter are characteristics of a substance that has to be…

Q: Q1) A) List five safety rules which should be followed in chemistry laboratory. B) List five of…

A: 1. While working in chemistry laboratory, one should wear the lab coat, goggles, gloves and shoes .…

Q: 1. Homogeneous mixture(s) A. orange juice B. oil + vinegar C. household white vinegar D. salt +…

A: A combination of two or more pure substances is called as a mixture. Mixtures are of two types…

Q: You have two solid substances that looks the same. What measurements would you take and which tests…

A: The two solid substances can be differentiated by observing their physical properties. Physical…

Introduction to chemistry

Chemistry is a branch of science that deals with the analysis of material and the substances that comprise it. It also manages the properties of these substances and their reactions to form new substances. It is basically centered on particles and atoms that make up components and mixtures. These chemical species will in general connect using bonds.