The HHV for Ethanol is 29.7 MJ/kg. From this information, please determine the heat of formation for Ethanol in kJ/mole.

Q: Why small grain size metals have the temperature environment greater mechanical strength than if…

A: The size of the grains plays an important role in the characteristics of the material, ranging from…

Q: order these with rising density glass liquid  gas crystal plasma

A: Density order is Solid >crystal > liquid >gases >plasma .

Q: Please list the different kinds of strain energy.

A: The energy which is stored due to deformation is called strain energy.

Q: 1. Graphene oxide is not a carbon nanomaterial.

A: Particles with a size below 1 × 10-9 m ( 1 nanometer ) are called as nanoparticles or nanomaterials.…

Q: Has very strong force of attraction and short relative distance. a) Atom b) Molecule Has very…

A: Atom: At atom is a tiny particle of a chemical element. Molecule: A molecule is a group of atoms…

Q: How ion rotate in magnet of analyzer which ion deflect more with higher radius and low?

A: When the ion beam enters into a magnetic field (the region between two poles of a magnet). When a…

Q: If the tube is packed with too much material, the melting point you determine may be

A: Melting point : The temperature at which a solid melts to form liquid is called it's melting point.

Q: :In x-ray production, increasing the mA of the x-ray tube filament will Increase the x-ray energy…

A:

Q: 3D chairs needed as well

A: The required stereochemistry for elimination reaction (E2 reaction), hydrogen and halogen atom must…

Q: Which molecule experiences the most angle strain?

A: The bond angle of the tetrahedral carbon atom (sp3 hybridized carbon atom) is 109.5o. In the…

Q: Which is an example of a non-contact force? A. Awoman pulls open a door. B. A magnet pulls an item…

A: To find: An example of non-contact force

Q: 1. How can the water displacement method be used to measure the density of tan irregularly-shaped…

A: Water displacement method is a method to determine the volume of any solid substance . In this…

Q: Correlate solidification with crystallization(Explanation needed).

A: Solidification is the process of changing the state of a system from either gaseous or liquid state…

Q: End point can be measured using .A Electrical conductivity .B Intensity of electric current .c…

A: In the titration the endpoint of a reaction is the point where some visible changes show the…

Q: Chemistry Select the choice with words that best fills in the blanks in the following statement The…

A:

Q: Having too much sample can cause an inaccurate melting point under these Sir how will the observed…

A: If heating occurs too quickly, the material cannot reach thermal equilibrium. Pure substances melt…

Q: What if the question say FCC or simple cubic?

A: In a given question, we have the atomic radius of an atom. We can calculate the edge length for each…

Q: How will I know if I should rotate anti or clockwise?

A:

Q: You can see a clear image when light reflects from a rough surface. OTrue O False

A: False

Q: A polymer looses 40% of its strength in 10 days and 50% in 20 days. How many days will it take to…

A: It follows first order kinetics.  So, the following formula can be used.  k = 0.693/t1/2 ...(1)  and…

Q: Describe the Goldsmith Classification of element

A: A geochemical classification developed by Victor Goldschmidt (1888–1947) is the chemical elements…

Q: different kinds of strain energy.

A: Strain is the Tendency by which any elastic material such as Rubber when stretched have the tendency…

Q: Can you explain a little bit more in comparsion?

A: The oxidation number describes the hypothetical charge of an atom present in a molecule, when all…

Q: Graph the data. label each line the type of crystal

A: Graph for various Crystal is given below.

Q: EASSY ABOUT SURFACE CHARACTERIZATION OF COPPER NANOPARTICLE USING TEM

A: Transmission electron microscopy (TEM) is a microscopy technique in which a beam of electrons is…

Q: How do you factor cubics?

A: 1st, we will take a random cubic equation, and will derive the factorisation. Our assumed function…

Q: The process of separating the solid from the liquid can also be accomplished by gravity filtration.…

A: it is quicker ( vaccum filteration is faster than gravity filteration)

Q: The diamond could cut/scratch the glass, this is a manifestation of what property? a. hardness b.…

A: Answer Diamond has high hardness than any other metal or non metals

Q: forces dominate and the particles are In the gaseous state of matter, the therefore

A: Gaseous State: In this state of matter the shape is not fixed that is it acquires the shape of the…

Q: Phenol is subject to Huckle's law True Error

A:

Q: The HMIS label rates the material risks under normal use conditions. a.true b. False

A:

Q: Solid particles sticking together to form larger particles describes the process of   a. accretion.…

A: Accretion is a process of solid particles sticking to one another to form a larger particles.

Q: Build a two-dimensional crystal that contains six formula units of sodium chloride in the solid…

A: Ionic crystal is formed from the ions. The cation is surrounded by a definite number of anions and…

Q: 4,7 Describe the composition and properties of the different types of steel.

A: There are different types of steel which are listed below -->  Stainless steel Carbon steel…

Q: Match the items in the left column to the appropriate Dianks in the sentences on the right. absorb…

A: =>Given:-