mm means what in online chemistry course

What does mm mean in math?

So what is a mm? First of all, mm is the abbreviation for millimeter. A millimeter is a metric unit used to measure the length of a small object. Sometimes, ''millimeter'' will be spelled as ''millimetre.'' Both ways are correct and both mean the same thing.

What is m and m in chemistry?

Both m and M are units of the concentration of a chemical solution. The lowercase m indicates molality, which is calculated using moles of solute per kilograms of solvent. A solution using these units is called a molal solution (e.g., 0.1 m NaOH is a 0.1 molal solution of sodium hydroxide).

What is mathematics in chemistry?

Mathematics is the language of science, and we will use it to communicate some of the ideas of chemistry. Although we divide science into different fields, there is much overlap among them.

What is the meaning of m in molar solution?

The lowercase m indicates molality, which is calculated using moles of solute per kilograms of solvent. A solution using these units is called a molal solution (e.g., 0.1 m NaOH is a 0.1 molal solution of sodium hydroxide).

What does mm mean in chemistry?

millimolara 1 millimolar (1 mM) solution contains 1 millimole per litre (1 mmol/l) Note: mol and moles mean the same thing (an amount) and moles/litre (long. winded but correct) is a concentration and can be expressed as mol/l, or mol.l-1, or. (best and simplest of all) — M.

What does mm mean in concentration?

A millimolar (mM) is the decimal fraction of a molar, which is the common non-SI unit of molar concentration. For example, a 2-molar (2 M) solution contains 2 moles of a certain substance in one liter of a liquid or gaseous mixture.

What does M in chemistry mean?

MolarityMolarity (M) is the amount of a substance in a certain volume of solution. Molarity is defined as the moles of a solute per liters of a solution. Molarity is also known as the molar concentration of a solution.

What does mm mean in units?

millimeterA millimeter (abbreviated as mm and sometimes spelled as millimetre) is a small unit of displacement (length/distance) in the metric system.

What is mM in biology?

Multiple myeloma (MM) is a clonal B-cell malignancy characterized by the aberrant expansion of plasma cells within the bone marrow, as well as at extramedullary sites. Decades of scientific research are now beginning to unravel the intricate biology that underlies the pathophysiology of MM.

How do you calculate mM in chemistry?

Amount (in moles) corresponds to Amount (in millimoles). The solution of this proportion gives rise to the formula: Amount (in millimoles)= Amount (moles) x 1,000. In our example, Amount (NaOH)= 1,000 x 0.0125 moles=12.5 millimoles.

How do you make a mM solution?

A concentration of 70 mM is the same as 0.07 moles per liter. Take 0.07 moles/liter times 342.3 grams per mole and you have 23.96 grams needed per liter. To make 200 milliliters of your solution multiply grams/liter by liters needed. Since 200 milliliters is 0.2L, multiply 23.96 grams by 0.2L to get 4.792 grams needed.

What does 5m mean in chemistry?

5 M solution means 5 moles of solute dissolved in 1 liter solvent.

Does M stand for concentration in chemistry?

Both m and M are units of the concentration of a chemical solution. The lowercase m indicates molality, which is calculated using moles of solute per kilograms of solvent.

What is mm scale?

A millimeter (or millimetre) is a unit of length used to make standardized measurements as part of the metric system. One millimeter is one one-thousandth of a meter. There are a couple ways to measure millimeters.

What does mm mean after a name?

If we wanted to denote millions, we would show that as MM. For this, we should credit the Romans. M is the Roman numeral for thousand and MM is meant to convey one thousand-thousand — or million. To take it further; one billion would be shown as $1MMM or one-thousand million.

How to classify matter?

Another way to classify matter is to describe it as a solid, a liquid, or a gas, which was done in the examples of solutions, above. These three descriptions, each implying that the matter has certain physical properties, represent the three phases of matter. A solid has a definite shape and a definite volume. Liquids have a definite volume but not a definite shape; they take the shape of their containers. Gases have neither a definite shape nor a definite volume, and they expand to fill their containers. We encounter matter in each phase every day. In fact, we regularly encounter water in all three phases: ice (solid), water (liquid), and steam (gas).

How do chemists describe matter?

One way chemists describe matter is to assign different kinds of properties to different categories. The properties that chemists use to describe matter fall into two general categories. Physical properties are characteristics that describes matter, such as boiling point, melting point and color.

What is a mixture made of?

A material composed of two or more substances is a mixture. In a mixture, the individual substances maintain their chemical identities. Many mixtures are obvious combinations of two or more substances, such as a mixture of sand and water. Such mixtures are called heterogeneous mixtures. In some mixtures, the components are so intimately combined that they act like a single substance even though they are not. Mixtures with a consistent composition throughout are called homogeneous mixtures Homogeneous mixtures that are mixed so thoroughly that neither component can be observed independently of the other are called solutions. Sugar dissolved in water is an example of a solution. A metal alloy, such as steel, is an example of a solid solution. Air, a mixture of mainly nitrogen and oxygen, is a gaseous solution.

What are the two types of substances?

There are two types of substances. A substance that cannot be broken down into chemically simpler components is an element. Aluminum, which is used in soda cans, is an element. A substance that can be broken down into chemically simpler components (because it has more than one element) is a compound. Water is a compound composed of the elements hydrogen and oxygen. Today, there are about 118 elements in the known universe which are organized on a fundamental chart called the Periodic Table of Elements (Fig. 1.2). In contrast, scientists have identified tens of millions of different compounds to date.

How many atoms are needed to make a line 1 inch long?

Atoms are extremely tiny; to make a line 1 inch long, you would need 217 million iron atoms! Similarly, the smallest part of a compound that maintains the identity of that compound is called a molecule. Molecules are composed of atoms that are attached together and behave as a unit (Fig. 1.2).

What is the language of science?

Mathematics is the language of science, and we will use it to communicate some of the ideas of chemistry. Although we divide science into different fields, there is much overlap among them. For example, some biologists and chemists work in both fields so much that their work is called biochemistry.

What is the study of matter?

Because the physical universe is so vast, there are many different branches of science (Figure 1.1). Thus, chemistry is the study of matter, biology is the study of living things, and geology is the study of rocks and the earth.

What is the study of atoms and molecules?

General chemistry is the study of atoms and molecules and their interactions. Chemistry studies the reactions and physical changes that occur when compounds are created or transformed.

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Why is molarity used in chemistry?

Molarity is more common because most solutions are made by measuring solutes by mass and then diluting a solution to the desired concentration with a liquid solvent. For typical lab use, it's easy to make and use a molar concentration. Use molarity for dilute aqueous solutions at a constant temperature. Molality is used when the solute and solvent ...

When to use molality?

Molality is used when the solute and solvent interact with each other, when the temperature of the solution will change, when the solution is concentrated, or for a nonaqueous solution. You would also use molality rather than molarity when you're calculating boiling point, boiling point elevation, melting point, ...

Why are molarity and molality closest to each other?

The values are closest to each other when the amount of solute is small because molality is for kilograms of solvent, while molarity takes into account the volume of the entire solution. So, if the solute takes up a lot of volume in a solution, m and M won't be as comparable.

What is Helmenstine's Ph.D.?

Both are units of the concentration of a chemical solution. Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. She has taught science courses at the high school, college, and graduate levels.

What is the MIT Department of Chemistry?

The Department of Chemistry at MIT is one of the nation's top chemistry departments. It has an illustrious history in sharing the MIT tradition of excellence, and it has provided national leadership in chemical education and research throughout the century.

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Importance of Molecular Modelling

The 1998 Nobel Chemistry Prize was awarded to Pople and Kohn for their work in Computational Chemistry and Molecular Modelling.

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Molecular modelling is a collection of (computer based) techniques for deriving, representing and manipulating the structures and reactions of molecules, and those properties that are dependent on these three dimensional structures.

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Graduation. M.Sc. Chemistry or Master of Science in Chemistry is a postgraduate Chemistry course. Chemistry is the science of matter and the changes it undergoes. The science of matter is also addressed by physics, but while physics takes a more general and fundamental approach, chemistry is more specialized, being concerned with the composition, ...

How long is a chemistry masters?

The Master of Science degree in Chemistry is offered on a part-time basis as well. The minimum duration is two years and that of the maximum is four years. M.Sc. Chemistry syllabus is divided into four semesters and the nature of the course career orienting in nature that opens a lot of career scopes for them after its completion.