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jonny [76]
3 years ago
13

Pickled cucumbers remain edible much longer than fresh cucumbers. Why

Chemistry
1 answer:
Alla [95]3 years ago
7 0
The main reason why is because pickled cucumber contain a lot of salt, which can act as a preservative.
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How many milliliters of a 0.80 M sucrose solution contain each of the following number of grams? The molar mass of sucrose (C12H
OlgaM077 [116]

 The  number of Ml  of 0.80 M sucrose solution  that contain

(A) 7.45 g are  27.25 Ml


 <u>calculation</u>

volume= moles /molarity

molarity = 0.80 M which is the same as  0.80 mol/l

moles=  mass/molar mass

=  7.45 g/ 342.3 g/mol =0.0218 moles

volume is therefore  = 0.0218 moles / 0.80 mol/L=0.02725 L

convert into ml  by multiplying  by 1000

= 27.25  ml


<h3>   <u> question b</u></h3>

volume  = moles/molarity

molarity =  0.80 M = 0.80 Mol/L

moles =mass/molar mass

mass 17.0 mg convert into  g by diving  by 1000=0.017 g


moles is therefore  = 0.017 g/ 342.3 g/mol = 4.97 x10^-5 moles


volume =  (4.97 x 10^-5 moles)  /0.8  mol /l=6.21 x10^-5 L

= 6.21 x10^-5  x 1000 =0.0621 Ml




7 0
4 years ago
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Explanation:

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4 0
3 years ago
When filling a burette for a titration, adjust the burette so that______, preferably over a sink. Then,_______to add the titrant
artcher [175]

Answer:

Explanation:

When filling a burette for a titrant, adjust the burette so that the opening is near or below the eye leve preferably over the sink.

Then, use a funnel to add the titrant into the burette.

The titrant should be filled almost to the zero mark.

6 0
4 years ago
What is melted rock and minerals found beneath Earth's crust called?
Setler [38]
Melted rock and minerals under the earths crust are called magma
5 0
3 years ago
Read 2 more answers
How many iron atoms are reactants in this equation? 4Fe+ 302
storchak [24]

Answer:

4 atoms of oxygen.

Explanation:

The given equation is :

4Fe+3O_2\rightarrow 2Fe_2O_3

Here Fe and O₂ are reactants and Fe₂O₃ is a product. It is a balanced chemical reaction in which the number of atoms on LHS are equal to number of atoms on RHS.

4 atoms of iron react with 3 atoms of oxygen to form iron oxide. Hence, there are 4 atoms of reactants in this equation.

6 0
3 years ago
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