Recent questions in Chemistry - Biology & Chemistry

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Extraction of a chemical to create an oil

A friend of a friend of my cousin would like to know a little bit about extraction. The person asking is writing a crime mystery novel and would like to understand how to turn a toxic chemical in a...
19/02/2017

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The nucleus of an atom consists of

The nucleus of an atom consists ofA.electrons and neutronsB.electrons and protonsC.protons and neutronsD.All of the above
14/02/2017

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Chemistry

Discuss some ways in which chemistry has changed technology.give one or more examples of how chemistry has affected another world.
07/02/2017

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What is β-Pseudouridine?

What is β-Pseudouridine?
31/10/2016

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Biochemistry Assessment

If an enzyme is active only when a particular histidly group is not protonated, then increasing the proton concentration (decreasing pH), would give which of the following types of inhibition ...
22/10/2016

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Molality

Calculate the molality of a solution that contains 7.25g of benzoic acid, C6H5COOH, in 2.00 x 10^2 mL of benzene, C6H6. The density of benzene is 0.879 g/mL. Also, identify the solute and ...
04/05/2016

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Are the following solids metallic, molecular or ionic?

a.) iron : 1. metallic, 2. molecular, 3. ionicb.) LiOH : 1. metallic 2. molecular 3. ionicc.) P4 : 1. metallic 2. molecular 3. ionicd.) BaBr2 : 1. metallic 2. molecular 3. ionic
23/11/2015

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What holds the following together?

Choices are ionic bond, nonpolar covalent bond, polar covalent bond, London forces, H bond forces, or dipole-dipole forces.a. C and H atoms in a C4H8 molecule ___________________________b. N to Cl ...
18/11/2015

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What is the pressure in torr and psi?

On a mountain top the atmospheric pressure is 0.885 atm. What is this in torr and psi?
18/11/2015

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When sulphur burns in air, it produces sulphur dioxide. Answer the following about this reaction.

When sulphur burns in air, it produces sulphur dioxide. Is this reaction an exothermic or endothermic? Out of the following, which type of reaction is it? a) Combination reation, b) dicomposition ...
03/11/2015