Why are percent error values never negative?

Q: incorrect way of measuring

A: If you will tilt your volumetric glassware it definitely gives you error  result of your…

Q: Calculate the molar mass of the unknown acid. Be sure your answer has the correct number of…

A: We calculate normality of acid and base then use this formula N1V1 = N2V2

Q: Convert 232 Gg into kg. Enter the answer in scientific notation.

A: In scientific notation, we have to put decimals after one digit.

Q: What is the percent error? And how do I find it with the information provided.

A: Percent error or percentage error expresses as a percentage the difference between an approximate or…

Q: any grams ore prosent in 5.39 modes

A: Given: The moles of AgNO3, (n) = 5.39 mol. The molar mass of AgNO3, (M) = 169.87 g/mol.

Q: Compare and contrast mass and weight.

A: Some terms are quite often interchangeably used but have minute differences between them. The mass…

Q: In a gravimetric determination of lead content in brass, there is a constant loss by solubility of…

A: Given: The mass of lead lost by solubility is 1.55 mg. The mass percentage of lead present in 0.3514…

Q: A chemist measures the amount of bromine liquid produced during an experiment, She finds that 763. g…

A: GivenMass of Bromine Liquid  produced = 763 gMoles of Bromine Liquid Produced = To be determined

Q: The following image depicts a centrifuge rotor with six sample holders. The blue sample holders…

A: To use a centrifuge rotor, we need to balance it. To balance it - All sample tubes should be evenly…

Q: 17. Explain why units are important in calculations.

A: Units can act as a guide in a calculation and are ready to show if the calculation is off track.…

Q: e the percentage error in the measurement of the students.

A:

Q: Question attached

A: External standard method: An external standard is like the internal standard (known behaviour), but…

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: the moles

A:

Q: e weight/volume percent conc

A:

Q: calculate

A: We will use gm equivalent of both acid and base

Q: Your answer can't be interpreted as a number or measurement in the correct format or is rounded…

A: The minimum no. of significant digits in the initial and final amount is 3, thus the answer must be…

Q: When doing percent error do the estimated value and true value need the same amount of sig figs or…

A: The true value and the experimental values are calculated under different experimental conditions…

Q: What is the best way to understand dimensional analysis?

A: dimensional analysis is the analysis of the relationships between different physical quantities by…

Q: Percent Error is defined as: % = [measured value – accepted value] / measured value x 100

A: Percent error is used to get an idea about the possible error in the experiment based on the known…

Q: PLEASE make sure sigfigs and rounding are correct.

A: Here is a graph of the pressure of dinitrogen dioxide (N₂O₂) in a reaction.,

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: Can a set of data be accurate but not precise? Please explain why

A: Precision can either be the number of decimal places to which you are sure, or the consistency of…

Q: Question 7, Saved Listen Systematic error affects the accuracy of a result.

A: Systematic error

Q: What is dimensional analysis?

A: Dimensional analysis is the process of analysing relationships between different physical…

Q: At a local hospital, 35 babies were born. If 29 were boys, what percentage of the newborns were…

A: Given: Total babies are 35.Number of boys are 29.

Q: Compare and contrast the following: (a) error and uncertainty, and (b) random error and systematic…

A:

Q: How many moles of water were lost if the amount of water lost was 0.378 grams?  Do not include units…

A: The moles of water that were lost if the amount of water lost was 0.378 grams are to be calculated.

Q: A chemistry instructor provides each student with 8 test tubes at the beginning of the school year.…

A:

Q: A chemist measures the amount of iodine solid produced during an experiment. He finds that 744. g of…

A:

Q: 50

A: The proper way to take the readings in the graduated cylinder is to record the value at the bottom…

Q: the moles of c t digits.

A:

Q: b) the mass of used acetylene in pounds 0.734 0.434 0.299

A: 40 inches long and 6 inches diameter a drum contains acetylene at a initial pressure of 250 psia…

Q: Two reasons to write a number in scientific notation are when it is either very big or very small.…

A: scientific notation was developed to easily represent numbers.

Q: ding coefficients (1, 2, 3, ...) in blanks). H3PO4 → H20

A: NaOH + H3PO4 -----> Na3PO4 + H2O  You should know about that, 1mol of H3PO4 neutralized by three…

Q: Convert 16.3 L/cm to units of milliliters per meter. Show the unit analysis by dragging the…

A: Given :- 16.3 L/cm  To convert :- 16.3 L/cm to mL/m

Q: Why does the percent-error equation use the absolute value of the error?

A: Percent error = errorAccepted value×100%

Q: Calculate the percent error when a known value of 5.69 is measured to be 5.85

A: Given,Measured value = 5.85Exact or known value = 5.69Percent error can be calculated as:

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: E Learning Task 2: An alloy is prepared by mixing 60g copper and 70g zinc. Find the percentage by…

A:

Q: ( Please see attachment ) Match the following statements to the correct number

A: Bromine Test This test is a qualitative test for unsaturated compounds. If unsaturation is there the…

Q: What is his percent error?

A:

Q: When calculating the percent error how do I know how many digits should be in my final answer can…

A: The difference between a measured value (experimental value) and an exact value (theoretical value),…

Q: Before proceeding to the analysis, the ____________ of the sample must be considered. a. size b.…

A: Answer: In the chemistry lab, samples are often being analyzed to gather the certain information…

Q: How many mole in 290.9 gram iron? please put answer in box with 3 places past the decimal in non…

A: given mass of iron = 290.9 g

Q: A chemist measures the amount of nitrogen gas produced during an experiment. She finds that 42.1 g…

A: Given information,             Mass of nitrogen gas is 42.1 g

Q: need help wilth calculating percent relative error. What will be the real value when it comes to…

A: Percentage error is the difference between the estimated number and the actual number when compared…

Q: Identify the number of significant figures (sig figs) in each of these values.

A: leading zeros are non-significant  trailing zeros are significant  zeros in between non-zeros are…

Q: What is the advantage of using scientific notation overdecimal notation?

A:

Q: Convert a speed of 341 cm/s341 cm/s to units of inches per minute. Also, show the unit analysis by…

A:

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.