How should a 10 mL graduated cylinder be read and why?

Q: One important observation that supporters of the phlogiston theory had trouble explaining was that…

A: Lavoisier, a French chemist, conducted an experiment in which he decomposed the mercury calx into…

Q: A What is the mass percent of potassium chloride when 9.35 grams of potassium chloride is mixed into…

A: Given : mass of KCl = 9.35 g               Mass of water = 162.98 g

Q: Information: A student performs an experiment with three unknown liquids. The following measurements…

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

Q: How many milliliters are in 1000 cm3?

A: one litre is equal to 1 cubic decimeter (1 L = 1dm3) 1000 mL = 1 dm3 1 dm = 10 cm 1 dm3 = 1000 cm3…

Q: 56. Round the number on the left to the number of significant figures indicated by the example in…

A: Significant figures of a number are those which are absolutely necessary to explain the numbers…

Q: the density of glycerin is 1.26g/cm3. How many pounds/foot3 is this. Use the conversion rates of…

A: Given: d=1.26g/cm3;d=???lb/ft31lb=454g;1ft3=28,317cm3Step 1: Analyze the given density value.The…

Q: how do you convert 0.84ug/mL to a unit mg/100g, assuming a density of 1g/mL?

A: We have to convert 0.84 μg/ml  to the unit of mg/100 g.

Q: A micro-syringe holds a volume of 1.3 μL. To the proper number of significant figures, what is the…

A: pL and μL both are the units of volume. 1 μL=10-6 L1 pL=10-12 Ltherefore,1μL=106 pL

Q: How many picograms are in 4.28x10^-11g?

A: We known In 1 picogram =1×10-12 gm so 1gm=1×1012 picogram

Q: A student performs an experiment to determine the density of a sugar solution. She obtains the…

A: Accurate measurement :- A measurement is said to be accurate if it is very close to the actual…

Q: An empty Graduated cylinder weighs 82.450 g. When filled to 50.0 mL with an unknown liquid it weighs…

A: SOLUTION: Step 1: Weight of cylinder with liquid = 126.997 g. Weight of empty graduated cylinder =…

Q: Density is an intensive physical property. Look-up the meaning of an intensive property of matter…

A: Intensive properties — Those properties of substance which doesn't depend on mass and volume of…

Q: What is the standard practice for significant digits when recording test data? Why are significant…

A: 1. Most standards for science and technology, led by ASTM E29, use the “five-even” rule. Under this…

Q: a laboratory apparatus that measures volume between 0.1 to 1.5 ml?

A: A long thin apparatus used to measure the volume between 0.1 to 1.5 mL accurately. This apparatus is…

Q: Convert 2.554 mg/mLmg/mL into pg/mLpg/mL.

A: Density is defined as the mass per unit volume. It is represented by. The relation for density is…

Q: Density is an intensive physical property. Look-up the meaning of an intensive property of matter…

A: Intensive properties are those properties whose value do not change with the amount of substance.…

Q: How many mililiters of this suspension should be given to an infant weighing 11lb?

A:

Q: A beaker is marked with 1mL lines for measuring volume. It is then filled with water such that the…

A: When we fill a container with a liquid, it generally forms a lower and an upper meniscus. The…

Q: Convert 4×10−4 kg to micrograms.

A: Conversion factor is a formula which defined the relation between one set of units of a particular…

Q: 2. An unknown liquid has a density of 1.23 g/mL. What mass of the unknown liquid, in grams, will…

A: Mass= ? Density=1.23g/ml Volume=31.2ml Mass=density×volume

Q: I want to know if there is a chart to go by to know how to convert metric systems and SI units for…

A:

Q: Penny sizes are the same before and after 1982. What can you say about the density of pennies before…

A: Penny sizes are the same before and after 1982, the density of pennies should have the same before…

Q: An experiment called for 20.0 grams of concentrated sulfuric acid whose density is 1.84 g/mL. What…

A: Given the density and mass of a compound, its volume can be calculated as:

Q: 3. A student is using a 10 mL volumetric pipet to dispense water and wants to test how accurate the…

A: A numerical problem based on uncertainty measurements, which is to be accomplished.

Q: 555mm^3(Cubed) to cm^3(Cubed)

A:

Q: How many mL are in 3.0 tsp? 1tsp=4.93mL. Answer with the appropriate number of significant figures.

A: The volume of 3.0 tsp is calculated as shown below. The volume of 3.0 tsp is 14.79 mL.

Q: Unit conversions: How to do I convert 5(kg/hr)/3120(mg/L) to a measurement in (m^3/hr)?

A: The conversion of quantity from one unit to another unit is known as unit conversion. During the…

Q: Complete the following train track to convert 80965 centimeters to ft. 1 ft = 12 in     2.54 cm = 1…

A: Consider the given information is as follows; 1 ft = 12 in     2.54 cm = 1 in     5280 ft = 1 mi…

Q: Density is an intensive physical property. Look-up the meaning of an intensive property of matter…

A: Given - Density of 25.0 mL water = 1.001 g/mL. We have to find the density of 50.0 mL of water.

Q: Your laboratory instructor has given you two metal cylinders. The mass of each sample was determined…

A: The number of significant figures in a measurement decided by the least count of instrument or…

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: Convert 1.00g/mL to mg/fl.oz. Basically, how do you go from 1.00 grams over milliliters to…

A: Given : To convert 1.00 g/mL to mg/fl.oz

Q: A student found that 39.621g of copper wire displaced 4.51 mL of water. If the actual density of…

A:

Q: What would be the difference in precision and accuracy if I chose to use a graduated cylinder…

A: Solution Beakers, chemist flasks, dropping funnels and therefore the like aren't volumetrical…

Q: Unit conversions: How to do I convert 5(kg/hr)/3120(mg/L) to a measurement in (m^3/hr)?

A:

Q: 5. A rectangular block of an unknown solid has a mass of 441.26 grams and measures 12.00 cm by 3.00…

A: Given, The mass of an unknown solid is 441.26 grams and measures 12.00 cm by 3.00 cm by 1.50 cm.

Q: Convert 3.0 x 10-3 µm to cm.

A:

Q: Convert 0.002087 kilograms to decigrams.

A: A numerical problem based on the conversion of kilogram into decigram.

Q: What volume will 11.7 g of a substance occupy if its density is 4.58 g/cm3?

A: All matter can be classified as solid, liquid and gases mainly. In these physical states of matter,…

Q: Decide whether each proposed addition or subtraction of measurements is possible. If it is possible,…

A: When doing an addition or subtraction of two numbers with different units, it is mandatory to…

Q: How many 150 mgmg tablets should a 42 lblb child take to receive the dosage of 8.4×10−3 g/kg?

A:

Q: How many significant figures should be reported on a 25 mL buret?

A:

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…

Q: Convert 2×10−4 kgkg to micrograms.

A: Given,2 x 10-4 kg

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.