Question 4 is needed to answer question 5. I had provided the answers for question 4. I just struggled finding the answers for 5 and I was hoping someone would be able to explain/

Q: A pycnometer weighs 21.62 g. Filled with water, it weighs 46.71 g; filled with another liquid, it…

A: Record the given data, pycnometer weight = 21.62 g         [H2O]1 weight = 46.71 g         [H2O]2…

Q: When something cannot be directly obeserved, it can be represented by a Group of answer choices…

A: Model is defined as a specific implementation of a more general theoretical view

Q: Four test tubes with 20mL of water and cut flowers were set up. Three of the test tubes had food…

A: as per question its the Time that is 10:00 am that is kept constant for observation of the color

Q: CAN YOU GIVE ME A SCIENCE UPDATE (RELATED TO CHEMISTRY) THAT IS MOST INTERESTING. PLEASE PROVIDE THE…

A: To find the new science update in the recent years

Q: 18. A 250.0 kg sample of ore contains 5.91 micrograms of gold. What is the concentration of gold in…

A: The correct option is D

Q: The following statements are correct regarding errors except Random errors are indeterminate but…

A: Systematic errors is a type of error , which does not arise by chance and is introduced due to…

Q: 100 90 80- 70 60 50 40 10 20 30 2974.95 2934.85 2873.85 1764.66 1718.10 1632.59 1583.89 90 09…

A: The question is based on the concept of IR Spectroscopy. we have to analyse and interpret the given…

Q: A student dissolves a Jefferson nickel to make 100.00 mL of solution in a volumetric flask. The…

A: Interpretation-  To determine the mass of copper when molarity of copper solution is given = 2.90 ×…

Q: h. 917.2 - 45.63 = Answer: i. 3.423 x 10-4 6.42 x 10-3 = Answer: 3.1 j. 6.300 x 10² + 15.43 Answer:…

A: Step I :-  Rule for significant figuressf in mathematical operations:- I Addition and subtraction…

Q: The liquid 1,2-dibromo-2-methylpropane has a density of 1.78 g/mL at 20.0°C. If a 162 gram sample of…

A:

Q: Answer the following questions. 116.0 117.0 117.5 118.0 128.0 130.0 153.0 154.0 155.0 156.0 2.2 4.0…

A:

Q: b) What is the need of green chemistry? What is E-factor?

A:

Q: You are on a bus and a fellow passenger collapses clutching their chest and trying to open a pill…

A: One lbs=.454kg One mg= . 001gm One tablet contains =.120gm active ingredient Active ingredients…

Q: A patient weighs 170 lb and is receiving a medication via an IV (600 mg/500 mL) infusion at 20 mL/hr…

A: Given : mass of patient = 170 lb Since 1 Kg = 2.205 lb Hence mass of patient in Kg = mass in lb /…

Q: 0.1 ml 1 ml 1 ml 0.1 ml 1 ml UUUUU A. B. Original C. 1 D. 9.9 ml 99 ml 9 ml 9.9 ml 9 ml A B D 10 1…

A: Dilution factor is calculated by V2 ÷ V1 During dilution the number of moles remain same, but volume…

Q: 35- The honey used in hot cakes can be classified as:Unique option.   A) element B) compound C)…

A: Given The honey used in hot cakes can be classified as   A) element B) compound C)…

Q: Find the weighted average of these values. Weighted average Value Weight 3.00 75.0% Number 4.00…

A: given,there are three weighted average,value weightvalue =3.00,  4.00,  5.00,weight=75%,  15% ,  10%…

Q: -1 Measurements shown that the concentration of salt in seawater is 35.5 g-L .C recover 0.100 kg of…

A: Given: density of seawater = 35.5 g/L  Mass of salt to be recovered = 0.1 Kg    To calculate: volume…

Q: Tracy is receiving lanoxin every 8 hours. She weighs 63 kg. The dose range for this drug is 0.030 to…

A: Given weight of Tracy is 63 kg.  Dose range of lanoxin is 0.030 to 0.060 mg/kg every day. The…

Q: Turn into scientific notation using dimensional analysis then solve problem

A:

Q: Evaluate 6×0.222×7.0 and round the answer appropriately. Express your answer numerically using the…

A:

Q: Part A 0.13 M HF (K, = 6.8 x 104) %3D Express your answer to two decimal places. ? ΑΣφ pH =

A:

Q: -4.15 -4,08 -4,01 -3,95 -3,86 -3,80 -3,73 -3,68 -3,63 5 15 25 35 50, 60 75 85 95

A: The plot of the Pkc and the temperature is drawn and the entropy is calculated.

Q: Can you please help me with question 1.

A: 1.

Q: Please help me complete question 1 and 2.

A: Assumptions of Dalton's atomic theory: The matter is made up of tiny, indivisible, and…

Q: Solving Problems using a scientific approach.

A: There are six important point to solve a problem via scientific approach.

Q: Part C You are given four values (1.043, 4.159, 1.09, and 4.6) and asked to conduct calculations on…

A: The question is based on the concept of significant figures. we have to calculate the quantities…

Q: A normal fasting blood sugar level is 0.0039 – 0.0055 mol / L. For a 3.0 x 10“ mL sample of blood,…

A: Molarity is a measure of concentration. It expresses the concentration as no. of moles in 1 L of the…

Q: A patient weighs 120 lb and is receiving a medication via an IV (600 mg/500 mL) infusion at 20 mL/hr…

A:

Q: A small rock was placed in a 100 ml graduated cylinder that has an initial water level at 12.0 ml.…

A:

Q: I need help with these questions

A: In model-1 types of reactions there is a different types of chemical reactions 1. Combination…

Q: Please demonstrate how to do question 1 parts a, b, and c. You do not need to do them all, simply…

A:

Q: 8. A student made a series of measurements of Mg** concentration in drinking water giving the…

A: Introduction :  Drinking water contains magnesium high concentration of magnesium and sulfur is…

Q: Please help with question 3

A:

Q: I need the answer for question 5

A:

Q: Gasoline and water do not mix. Regular grade (87 octane) gasoline has a lower density (0.73 g/mL)…

A: Given : density of gasoline = 0.73 g/mL Density of water = 1.00 g/mL Mass of gasoline = 34.0 g Mass…

Q: Select from the list below, the Kavalue of aluminium nitrate, Al(NO3)3. (You will have to do a bit…

A: Ka is known as the equilibrium constant of an acid which is defined as the ratio of product of…

Q: 519 6 ppm 4.0 3.5 3.0 2.5 2.0 1.5 1.0 60 80 90 007 2.35 60 4.08 -2.34 2.13 2.32 2.30 2.28 000 90'…

A: proton nmr spectra shows peaks for different proton environment present in the molecule. t - triplet…

Q: Prepare 500g IV pack of 5% m/m KCI. Write procedure how to do this  What is the mathematical…

A: Introduction : We have to prepare 500g IV pack of 5% m/m KCI.

Q: From the following, pick the most reliable source for obtaining scientific information: Group of…

A: For scientific information, published scientific papers are much more reliable sources than other…

Q: Can someone please help with question 3

A: Age of rock = 1.1 billion years

Q: For Given weight and height(in kg and meters) calculate body mass index Current Weight Weight(kg)…

A: Body mass index: It is measure the body fat of men and women that is based on the height and weight.…

Q: Which step should always be followed for effective problem solving ?

A: Problem solving means understanding the problem and finding it's solution. Problem solver must know…

Q: The line described by a linear regression attempts to a. pass through as many points as possible.…

A: The regression line is used to study the relationship among two or more variables and observe the…

Q: Please Help me complete question 2

A: A question based on atomic theory, which is to be accomplished.

Q: Consider the following operations on the number 2.23 x 102 Without using a calculator, decide which…

A: The quantities which come across during the scientific studies are named as physical quantities. The…

Q: question 4.

A: The chiral center is the carbon that has all different 4 atoms attached or different groups…

Q: Part B What are each of the following observations an example of? Drag the appropriate items to…

A: Diffusion-The random moment of the gaseous particles from the regin of high concentration to thew…

Q: know there is only a limit to how many questions you can help me on and I don't know if each blank…

A: The solution is as follows:

Q: The world population is estimated to be 7.4 x 109. Nauru is the smallest island nation and comprises…

A: Estimated world population = 7.4 x 109