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fomenos
3 years ago
7

What is the purpose of constructing a calibration curve

Chemistry
1 answer:
stellarik [79]3 years ago
5 0

Answer:

Calibration curves are used to understand the instrumental response to an analyte, and to predict the concentration of analyte in a sample.

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Bromine, a liquid at room temperature, has a boiling point of 58°C and a melting point of –7.2°C. Bromine can be classified as a
andreev551 [17]

Answer:

Pure substance.

Explanation:

7 0
3 years ago
For the reaction represented by the equation 2KClO3 → 2KCl + 3O2, how many grams of potassium chlorate are required to produce 1
Vikentia [17]

 The grams  of potassium chlorate  that are required  to produce 160 g of oxygen  is   408.29  grams

 

<u><em>calculation</em></u>

 2 KClO₃→  2 KCl  + 3O₂

Step 1:  find the  moles of  O₂

moles  =  mass÷  molar mass

from periodic table  the  molar mass of O₂  = 16 x2 = 32 g/mol

moles  = 160 g÷ 32  g/mol =  5 moles

Step2 : use the  mole   ratio to determine the  moles of KClO₃

from equation given KClO₃ : O₂  is 2:3

therefore the v moles of KClO₃  =  5 moles x 2/3 = 3.333  moles


Step 3:  find the mass  of KClO₃

mass= moles x molar mass

from periodic table  the molar mass of KClO₃

= 39 + 35.5 + (16 x3) =122.5 g/mol


mass  = 3.333 moles x 122.5 g/mol =408.29 grams

7 0
3 years ago
When a pure substance was heated a chemical reaction occurred, and a student obtained another solid and a gas, each of which was
bija089 [108]
The original solid is not an element
8 0
4 years ago
Consider the following reversible reaction. What is the equilibrium constant expression for the given system?
ladessa [460]
The question is incomplete. Complete question is attached below
..........................................................................................................................

Answer: 
Equilibrium constant (K) is defined as the ratio of concentration of product to concentration of reactant.

For the reaction:  2H2O(g)    ↔     2H2(g)      +       O2(g)

Equlibrium constant = \frac{[H_2]^2[O_2]}{[H_20]^2}

[ ] bracket in above expression indicates concentration.

  

3 0
3 years ago
Read 2 more answers
The group of cells that are organized into columns and rows
Brrunno [24]

Explanation:

vertical columns and horizontal rows, hope it helps

5 0
3 years ago
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