answersLogoWhite

0

🎒

Chemistry

This category encompasses all questions about the composition, structure, properties, and reactions of matter.

500 Questions

Can A reversible chemical reaction can only convert reactants to products true or false?

User Avatar

Asked by Wiki User

False!!!!

A reversible reaction converts reactants to products, but when sufficient product is made spontaneously to products will reform the reactants.

The reaction system reaches a point known as an 'Equilibrium', where the forward reaction ( reactants to products) rate is the as the backward reaction (products to reactants).

At Equilibrium all four chemicals are present in the reaction vessel.

The Classic example is Ethanol and Ethanoic Acid , forms water and Ethyl Ethanoate.

The reaction equation is

CH3COOH + CH3CH2OH H2O + CH3C(=O)OCH2CH3

The double ended arrow indicates a system which is reversible and at equilibrium.

Does periodic table have hydrogen?

User Avatar

Asked by Wiki User

Nowadays usually put in the same group as the alkali metals, group1. Hydrogen is an odd-ball elemnt. It shares no characteristics aprt from 1 electron in valence shell with the alkali metals.

Some older versions put in TWO places, with the alkali metals (group1) and with the halogens, group 17. Reasonable as H loses one electron (like a group 1) and gains one (like a halogen) when it forms the hydride ion.

Boyles law possible sources of errors?

User Avatar

Asked by Wiki User

Boyle's Law relates gas pressure (P) to volume (V) by the equation P1V1 = P2V2. There are two sources of errors to experimentally and theoretically applying Boyle. The first is based on instrumentation, which include operator errors and certainty problems when measuring P and V. The second is from calculations, specifically user errors.

What column in the periodic chart contains the atoms with an ideal electron configuration?

User Avatar

Asked by Wiki User

I think you mean the Ideal or Noble gases.

Column 18 , or '8' , in 'old money'.

What is the name given to a scientist who studies chemicals?

User Avatar

Asked by Wiki User

A 'CHEMIST'.

Similarly,

A PHYSICIST for physics

A BIOLOGIST for biology

A MATHEMATICIAN for mathematics (Maths.).

What is an intradermal test to determine tuberculin sensitivity?

User Avatar

Asked by Wiki User

'Intradermal' means inside the skin.

'Intra' ; inside

'dermal' ; skin.

So the tester is taking a sample from under the surface of the skin to test for tuberculosis (TB).

Does sugar affect melting point?

User Avatar

Asked by Wiki User

No, sugar does not affect the melting point. The melting point of a substance is determined by its chemical composition and structure. However, adding sugar to a solution can affect its boiling point, but that is a different property.

Is tuba tuba roots poisonous?

User Avatar

Asked by Wiki User

Yes, tuba tuba roots are poisonous. They contain toxic compounds, such as diterpene esters, which can be harmful to humans if ingested. It is important to handle tuba tuba roots with care and avoid consuming them.

What is lucite used for?

User Avatar

Asked by Wiki User

Lucite, also known as acrylic or plexiglass, is a versatile material used in a variety of applications. It is commonly used in the creation of clear or transparent products, such as display cases, signage, windows, and furniture. Lucite is lightweight, durable, and offers excellent optical clarity, making it a popular choice in many industries.

Is Mercury at boiling point or melting point?

User Avatar

Asked by Wiki User

Mercury is at its melting point at around -38.9 degrees Celsius (-38.02 degrees Fahrenheit) and its boiling point at approximately 356.7 degrees Celsius (674.1 degrees Fahrenheit).

Why is CaCl2 used to clear snow in cold countries?

User Avatar

Asked by Wiki User

CaCl2, or calcium chloride, is used as a de-icer to clear snow in cold countries because it is highly effective in melting ice and snow. Calcium chloride has a lower freezing point than water, allowing it to remain in a liquid state even in extremely cold temperatures. It is also hygroscopic, meaning it attracts moisture from the air and forms a brine solution that melts snow and ice on contact.

Is water defected by a non uniform electrostatic field?

User Avatar

Asked by Wiki User

Yes, water can be deflected by a non-uniform electrostatic field. Water molecules are polar, meaning they have a positive charge on one end and a negative charge on the other. When a non-uniform electrostatic field is applied, the positive and negative ends of the water molecules will experience different forces, causing the water to be deflected.

What color will PHTH and vinegar turn if mixed?

User Avatar

Asked by JordanMilus

When phthalocyanine blue (PHTH) pigment and vinegar are mixed, the color that will result depends on the specific shade of PHTH used. However, generally, mixing PHTH with vinegar will not result in a significant color change. The PHTH pigment is very stable and does not react with the acid in vinegar.

Can two solids reacts to form a liquid by chemical combination?

User Avatar

Asked by Wiki User

Yes, two solids can react to form a liquid by chemical combination. This type of reaction is known as a synthesis or precipitation reaction. An example of this is when solid sodium reacts with solid chloride to form liquid sodium chloride (common table salt) during the process of electrolysis.

How much hour in 80 klm?

User Avatar

Asked by Wiki User

It is not possible to determine the number of hours it would take to travel 80 kilometers without knowing the speed at which you are traveling.

Where can one purchase Polar S625X?

User Avatar

Asked by Wiki User

The Polar S625X heart rate monitor is no longer in production, so it may not be available from official retailers. However, you might be able to find it for sale on platforms like eBay or other secondhand marketplaces.

What are chelates explain an example?

User Avatar

Asked by Wiki User

Chelates are chemical compounds in which a central metal ion is bonded to a ligand through multiple coordination bonds. The ligand typically forms a ring structure that encloses the metal ion. An example of a chelate is the ethylenediaminetetraacetic acid (EDTA) complex, which chelates with metal ions such as calcium or iron to form stable complexes that are used in various applications, such as in medicine or industrial processes.

What is the normal temp of dry ice in deg c?

User Avatar

Asked by Wiki User

The normal temperature of dry ice is -78.5 degrees Celsius or -109.3 degrees Fahrenheit at atmospheric pressure.

What is a muscle suspension gimmick?

User Avatar

Asked by Wiki User

A muscle suspension gimmick is a theatrical trick or illusion in which a performer appears to be suspended or levitating by using hidden support mechanisms or harnesses that are disguised as part of their muscular physique. This gimmick is commonly used in magic shows or performances to create the illusion of superhuman strength or supernatural abilities.

Why do people prefer to cooker at lower temperatures?

User Avatar

Asked by JessieWeber

Cooking at lower temperatures allows for more even and gentle cooking, which can help retain more moisture and result in more tender and flavorful food. It also helps to preserve the nutrients and natural colors of the ingredients, and reduces the risk of burning or overcooking. Additionally, cooking at lower temperatures can help to develop complex flavors and improve the texture of certain foods.

Which of the main four gases of the atmosphere are most reactive?

User Avatar

Asked by Wiki User

Among the main four gases of the atmosphere (nitrogen, oxygen, argon, and carbon dioxide), oxygen is the most reactive. It readily reacts with other substances, making it essential for respiration and combustion. Nitrogen is relatively unreactive, while argon and carbon dioxide have even lower reactivity.

What are the concepts of chemical dependency?

User Avatar

Asked by Wiki User

The concepts of chemical dependency involve the physiological and psychological reliance on drugs or other substances. It includes the development of tolerance, which is the need for increasing amounts of the substance to achieve the desired effect, and withdrawal symptoms when the substance is discontinued. Chemical dependency also encompasses cravings, loss of control over substance use, and continued use despite negative consequences.

What are some of the products that are produced by IKA?

User Avatar

Asked by Wiki User

IKA produces a wide range of products for laboratory and industrial applications. Some of their products include magnetic stirrers, homogenizers, dispersers, shakers, mixers, and rotary evaporators. They also offer a line of analytical equipment such as mills, centrifuges, and rheometers.

What chemical formula stands for 3 separate iron (Fe)?

User Avatar

Asked by Wiki User

The chemical formula for three separate iron (Fe) atoms is Fe3. This indicates that there are three iron atoms present.

Which ion is always written first in a chemical name?

User Avatar

Asked by Wiki User

The cation is always written first in a chemical name. Cations are positively charged ions, while anions are negatively charged ions. The convention is to write the cation first, followed by the anion.