Unit Conversion

Q: Make each of the following unit conversions. a) Convert 4.98 m to mm b) Convert 3.23 L to mL

A: 1 meter = 1000 milimeter  1 Liter = 1000 mililiter

Q: 50. Round each number to three significant figures.(a) 10,776.522 (b) 4.999902 * 106(c) 1.3499999995…

A: Significant numbers are the digits in a number which is important and provide reliability about the…

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: Complete the unit conversions and round vour result to the correct number of significant fiaures.…

A: Unit conversion is the process of converting a quantity from one set of units to another. This is…

Q: How do molecules of elements and molecules of compounds differ? In what ways are they similar?

A: Given compounds,        Molecules of elements        Molecules of compounds

Q: List the prefixes for multiples and fractions of basic units.

A: prefix Symbol Multiple factor yocto y 10-24 zepto z 10-21 atto a 10-18 femto f 10-15 pico…

Q: The metric unit used to measure the amount of matter in an object

A:

Q: Write the two conversion factors that can be written forthe relationship between cm and in.

A: Units of measurement are defined as the fixed magnitude or quantity that can be defined and adopted…

Q: please write the conversion and the scientific notation

A: Given that : We have to perform the following conversions and also give the scientific notations :

Q: Convert 7.5 * 1023 cm to mm.

A: The given expression is as follows: =7.5×1023 =7.5102×102×102 =7959060 cm

Q: Carry out the given conversions from one metric unit of length to another. 47.1 Mm = 1.45 nm == km…

A:

Q: Carry out the given conversions from one metric unit of length to another. 88.3 x10¬ -96 88.3 Mm kn…

A: Convert 88.3Mm to Km ?

Q: A glass of cold milk is an element, a compound, a homogeneous mixture or heterogeneous mixture?

A: A glass of cold milk is an element, a compound, a homogeneous mixture or heterogeneous mixture?…

Q: A student mixes some soap with water and then blows through a straw into the solution. is it a…

A: Physical changes are those which do not involve any chemical reactions to be taking place only the…

Q: How is the metric unit of L defined?

A: The SI unit is known as the International system of units known for its standard method for…

Q: What is the SlI unit for mass? O kilogram O pound O gram

A: • We need to determine the SI unit of mass

Q: 49. Round each number to four significant figures.(a) 255.98612 (b) 0.0004893222(c) 2.900856 * 10-4…

A: The following rules can be followed to round up the final answer to the significant figures.…

Q: Is Tomato Juice a homogeneous or heterogeneous

A: Answer:When two or more chemical substances are combined together, then such combination is called…

Q: 7.54 x 10e-8 m to nanometers

A: Unit measurements are important in chemistry as they are very helpful while doing calculations. It…

Q: How are conversion factors used to convert one unit to another?

A: In order to convert one unit to another, we need a definite number which is called as the conversion…

Q: Identify the prefix that defines each power of ten. 10%: 10%: 10-² 10-³ 10-6:

A: Prefixes are easier to write and pronounce than powers of 10.

Q: What fraction or multiple of the meter might be the most appropriate measurement for the distance…

A: . step1: Given: distance between Chicago and Saint Louis. Find out:hat fraction or multiple of the…

Q: Convert -163.1  °C to Kelvin   Round your answer to 1 decimal place and don't forget to use the…

A:

Q: What role do prefixes play in the metric system?

A: Metric system is the measurement system for length, mass and volume. The units used are grams,…

Q: 14 oz converted to grams

A: Given,              14 ozRequired,                   oz into grams conversion .

Q: What are the two unit factors that relate meters and millimeters?

A: Two equivalent quantity’s ratio is unit factor. So the quantity in the numerator and denominator…

Q: 3. Label the following as a pure substance or a mixture. (a) (b) (c)

A: Pure substance: A pure substance is formed by only one type of particle. A pure substance can be a…

Q: How does a homogeneous mixture differ from a pure substance? How are they similar?

A: Difference between Pure substance and Homogeneous mixture:A pure substance is composed of a single…

Q: Convert 23570 mg into kg using conversion analysis

A: The given problem is 23570 mg.

Q: Express the following quantity in standard notation for the given unit. (Do not type the unit into…

A:

Q: 11) Convert the following. Set up each problem using dimensional analysis. You may need to refer to…

A: We know that,  1 kg= 1000 gram 1gram=100cg 1gram= 1000mg So,

Q: Is melting candle wax a chemical or physical change

A: Physical and chemical changes When there is a change in the chemical composition the change is…

Q: The density of a substance relative to the density of water.  It is one of the few measured values…

A: The density of any substance is mass by volume. Density=massvolume The unit of mass is Kg and the…

Q: Convert a volume of 3650 cm3cm3 to cubic meters.

A: Units used for conversion is, 1 cm = 0.01 m Hence, 1 cm3 = 10-6 m3

Q: What is 15,390,000 rounded to two significant figures?

A: Rules for counting significant figures: 1. All non-zero numbers ARE significant. 2. Zeros between…

Q: A spherical ball of Lead has a diameter of 7.5 cm. What is the mass of the sphere if lead has a…

A:

Q: Express the following quantity in standard notation for the given unit. (Do not type the unit into…

A: A standard unit of measurement is a quantifiable language that describes the magnitude of the…

Q: Define the term unit conversion problems?

A: Unit conversion: It is defined as the conversion of units of some measurements into another units.…

Q: Define the term Derived Unit?

A: To define derived unit, it is important to understand the meaning of SI base units. International…

Q: Unit conversion How many nanometers are in 27.8 centimeters?

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.