18 A student is separating some mixtures. She wants to make pure water from a solution of salt water. She filters the mixture.Her method does not work.(a) Explain why her method does not work and describe the method she should use.Salt is soluble or dissolves in water (so filtration wi...
Is H2O considered a molecule or a compound? Is sodium a pure substance or a mixture? What type of compound is always an electrolyte? How many water molecules can hydrogen bond to methanol? Is hydrogen a positive or negative ion? What is dehydration in organic chemistry?
If a salty crude sample was analyzed to have 110.6ppm salt. Calculate the pounds of salt per 1000 bbls of crude Describe an experimental procedure that can be used to determine the percent by mass of water in a hydrate. Determine whether the statement is a...
A substance that has a uniform composition throughout the bulk is a homogeneous substance. It generally has a single phase. For example,] a mixture of salt in water forms a homogeneous solution on mixing it thoroughly. If we take out 1mL of this solution from any side, it will have the...
Mixtures Definition - A mixture contains two or more elements or compounds that are not chemically combined together. To learn about Homogeneous and Heterogeneous mixtures click here.
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Mixture or "pure substance" ? In science it is necessary to know exactly what we are talking about, so before we can even begin to consider matter from a chemical point of view, we need to know something about its composition; is the stuff I am looking at a single substance, or is ...
The resistance of virus to UV radiation was investigated by irradiating a mixture of IAV and artificial mucus (or saline). In saline, the titre ratio was reduced by approximately 0.01 and 0.001 at UV doses of 2.25 and 4.5 mJ/cm2, respectively. IAV was completely inactivated at 6.75 mJ/cm...
Pure chemical compounds are substances composed of bonded molecules or ions. For example, pure water is s chemical substance since it always has the same ratio of hydrogen to oxygen. However, seawater is a mixture since it contains sand, salt, and other complex molecules. ...
and the resulting substance consists of a single phase. Examples of homogeneous mixtures include air and saline solution. Ahomogeneous mixturemay contain any number of components. While a saline solution is simply salt (the solute) dissolved in water (the solvent), air contains many gases. The ...