C0rencal yielu Uf pieciptate! (f) Students performing this experiment suggested the following techniques to separate the precipitate from the water. Their teacher rejected each idea. Explain why the teacher may have done so, and name the inherent errors of (i) boiling off the water (ii) decanting (pouring off) the water

Q: 5) 5.0 × 10-9 m to pm

A: The transformation of one unit into another unit is basically unit conversion. However, this…

Q: The number 18.01937 rounded to 3 significant figures is

A: Rounding a number to three significant figures in the same way ,rounding to three decimal places.…

Q: A kilgram is 1000g?

A: The term SI base units refer to the seven units of measure which have been defined by the…

Q: Methane gas and oxygen gas react to form water vapor and carbon dioxide gas. What volume of carbon…

A:

Q: The density of a pure substance is its mass per unit volume. The density of hexane has been measured…

A: Step 1: Step 2: Step 3: Step 4:

Q: 113.4 gallons to deciliters

A: A conversion factor is a ratio that expresses how many of one unit is equal to another unit.

Q: Calibration of the Picnometer, mass of empty picnometer is 30.708g, mass of picnometer + water is…

A: Mass  of empty picnometer is   30.708 gm Mass of picnometer + water is 61.018 gm Mass of water =?

Q: What conversion factor is appropriate to convert 862 mm Hg to in Hg (inches of mercury)?

A: Conversion of mm Hg to in Hg

Q: The single proton that forms the nucleus of the hydrogen atom has a radius of approximate 1.0x10-13.…

A: Volume of nucleus and Hydrogen atom is determined as given below,

Q: 3. Air weighs about 8.0 lb. per 100. cubic feet. What is the density of air in (a) gram per cubic…

A:

Q: The number 31.00065 rounded to 4 significant figures is

A:

Q: The number 0.0007270 is larger than the number 5.7 × 10-³.     a. true b. false

A: Given numbers are0.0007270 and 5.7 × 10-3

Q: What is that temperature in the kelvin?

A: We can convert degree celsius to kelvin by this formula :-  0°C + 273.15 = 273.15k   Given…

Q: How many sig figs should I have in 1.18 meters converted to inches

A:

Q: How do I calculate the volume?

A: Volume of a cylinder can be calculated by the formula: Volume = πr2h…

Q: What volume of water in gallon would be required to fill 25ml container?

A:

Q: In the metric system a liter is a measure of

A: Different units are used for the representation of different quantities in the metric system. Any…

Q: Convert 460.3 ml to quarts. Express your answer with the correct number of significant digits.

A: Since we know that 1 milliliter (ml) = 0.001056688 quart (qt). Where ,  Milliliter (ml ) is a unit…

Q: As a whole number what is 4.13x10-7

A: Given:- 4.13 × 10-7 write whole number -

Q: Rewrite this measurement with a simpler unit, if possible. 8.8 kg⋅m-m ZUGANGS me

A: We have to rewrite the given measurement into a simple unit.

Q: In the former British monetary system, one pound consisted of four crowns, each crown was worth five…

A: One unit is converted into other by multiplicative factor .

Q: e concentration of

A:

Q: How many 1-fm squares does it take to construct a square that is 1 m on each side?

A: Number of square can be calculated using area of squares.

Q: Ammonium phosphate ((NH), PO,) is an important ingredient in many fertilizers. It can be made by…

A: The reaction of Phosphoric acid with Ammonia:-                    H3PO4  +  3NH3   → [(NH4)3 PO4]…

Q: How many picometers are in 100. yards?

A: Yards and picometers are units of length. Actually ‘meter (m)’ is considered as the SI unit of…

Q: Which is greater mass: 2158 g or 2518 kg?

A:

Q: The number 7.134×10^7in normal decimal notation is?

A: Basic rules to convert scientific notation into decimal notation :If the exponent is positive, move…

Q: A fraction collected during the distillation of an ethanol-water mixture has a volume of 7.58 mL and…

A: Volume of a fraction = 7.58 mLmass of a fraction = 6.14 gDensity of a fraction = ?

Q: Calculate the amount of heat needed to melt 34.6 g of solid acetic acid (HCH3CO₂) and bring it to a…

A: Given,the mass of acetic acid ( HCH3CO2 ) = 34.6 gFinal temperature = 116.7 0CFrom the reference…

Q: What are the metric prefixes from largest to smallest?

A: The metric prefixes  are shown below from the largest to smallest  Mega = 106 Kilo = 103 hecto = 100…

Q: Unit Conversion (Round to 3 Sig Digs at ending) 6.0 × 10−9 m to pm

A: Unit conversion can be done by the unitary method and following the significant figure rule.

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.