When designing an experiment it is best to avoid using a result that is the small difference between two large measured quantities. In terms of uncertainties in measurement why is this good advice?

Q: Use significant figures to express the inherent uncertainty in measured quantities and in…

A: The uncertainty in a measurement is an estimate of the amount by which the measurement result may…

Q: The density of a metal is 2.42 g/cm3. How many pounds are in 84.87 in of the metal?

A: Mass per unit volume is known as density. It SI unit Kg/ m3

Q: A student is trying to determine some information about a metal sphere. He weighs a piece of metal…

A: Density is defined as the mass of substance upon the volume occupied by substance  Density=…

Q: State the rules governing the use of significant figures in Adding/subtracting measurements.  How…

A: Significant figures are the digits having a meaning in a given number. The number of decimal places…

Q: What was an example of a case where you used the scientific method to solve a real-life issue?

A: Problem: Do plants need food to grow? Hypothesis: If the plant is given more food it will grow…

Q: Multiply or divide the following measurements. Be sure each answer you enter contains the correct…

A:

Q: Read the descriptions below of two substances and an experiment on each. Decide whether the result…

A: Sample A is a clear liquid with an initial density of 0.77 g/mL. After boiling and condensing the…

Q: Why is it important to always include units when recording measurements?

A: It is important to always include units when recording measurements.

Q: A chemistry student needs 10.0 g of ethanolamine for an experiment. By consulting the CRC Handbook…

A: Density is defined as the mass divided by the volume => density = mass / volume

Q: A sample of unknown liquid is poured into a graduated cylinder and the volume of the unknown is 23.5…

A: The mass per unit volume of a substance is known as the density of the substance. The density of a…

Q: 2. Identify as true (T) or false (F): | Scientific method may never prove a theory to be wrong.…

A: Scientific studies involve the basic design of the research work to be carried out, setting the…

Q: Measure the diameter of the circle using Ruler A and Ruler B.Given that the actual diameter of the…

A: Given : Ruler A and Ruler B and some statements are given .  To find : To match the statements…

Q: In step 9 of the procedure, if you were asked to determine the mass of solution in a test tube, how…

A: To Show the steps to determine the mass of solution in a test tube in step 9 of the procedure.

Q: A chemistry student must write down in her lab notebook the concentration of a solution of potassium…

A:

Q: Questions 1. What is the difference between mass and weight?

A: As per our guidelines we can only solve first question. Please resubmit the other questions as next…

Q: have a chemistry question, it asks: "In the lab, you measure the density of a metal to be 4.16…

A:

Q: Is it possible for measured data to be precise but inaccurate?

A: Here we have to explainIs it possible for measured data to be precise but inaccurate-

Q: A chemistry student needs 40.0 g of dimethyl sulfoxide for an experiment. By consulting the CRC…

A: mass of dimethyl sulfoxide = 40.0 gdensity of dimethyl sulfoxide = 1.10 g.cm-3volume of dimethyl…

Q: A student measured the length and mass measurements of a cube using the same equipment as in the…

A: Density=MassVolume

Q: When determining the density of a pure liquid or solution, the temperature of the sample must be…

A: The density of a liquid sample depends on temperature because as the temperature changes, the volume…

Q: 1. Comment on the differences in measurements obtained on the same objects using the meter stick,…

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

Q: A student experimentally determines the density of water to be 0.9955 g/mL. The reported density of…

A:

Q: A student performed the same experiment as you. The following data was recorded in their lab…

A: Ideal gases are those gases which follow ideal gas equation. The relation between pressure, volume,…

Q: 4. Three different people weigh a standard mass of 2.00 g on the same balance. Each person obtains a…

A: Accuracy - It is the virtue of obtained measurements to match the actual value of the any given…

Q: 9. A student determines there are 5.45 mg of vitamin C in a 45.7 mL juice sample. How many mg of…

A: It is given 5.45 mg of vitamin C is present in 45.7 mL of juice.

Q: Wallie weighed 3 different cylinders that all looked the same. He noticed that the masses were all…

A:

Q: Three experimental mass values of a certain object were obtained: 54.66 8, 54.67 8, and 54.668 If…

A:

Q: on average a drop of water has a volume of 50.0 microliters. What is this volume in dekaliters?…

A: Given :- volume of a drop of water = 50.0 microliters  To convert :- given volume to decaliters…

Q: A pycnometer is a glass flask with a tight fitting glass stopper that can be used to determine the…

A: The ratio of mass to the volume is known as density.

Q: a zinc rod is immersed in a silver nitrate solution. The rod was taken out of the solution and…

A: The mass increased by depositing silver in the rod is 1.5 gThe molar mass of Ag is 107.87 g/mol, and…

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: 3.8060 × 13.1 = x O 26162

A: From the rules of significant figures.  In multiplication and dividation.  The answer will have the…

Q: A student’s percent error for the density of gold was 7% under the accepted value of 19.3 g ml-1.…

A: Answer:-This question is answered by using the simple formula of calculation of percentage error.

Q: Distinguish between the terms accuracy and precision.In general, explain why a precise measurement…

A: To find: Difference between the terms accuracy and precision. Explanation for why a precise…

Q: A student sets up the following equation to convert a measurement. (The ? stands for a number the…

A:

Q: It is necessary to take into account the proper number of significant figures when taking a…

A: True. more precise the measuring instrument we get more precise and accurate measurements.

Q: A pycnometer is a glass flask with a tight fitting glass stopper that can be used to determine the…

A: Density: The ratio of mass to the volume is known as density. density=massvolume

Q: A student estimated that the volume of a crucible was 28.6 mL. When the volume was accurately…

A: percentage error is given by  % error = (experimental value - actual value ) X 100 / actual value.

Q: 1. A student overheats their beaker during the dehydration of the copper salt, creating black CuO(s)…

A: If a student overheats his beaker while heating a solution of a copper salt, resulting in…

Q: The mass of a sample is 550 kilograms. Expresses that mass in milligrams? Express your answer in…

A: Convert kilograms to milligram

Q: 2. In your lab you made four mass measurements using a digital balance and the bar graph shown…

A: Systematic error,  error that is predictable and error may generate due to fault in the instrument…

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.