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klasskru [66]
1 year ago
10

Calculate each of the following quantities:

Chemistry
1 answer:
allsm [11]1 year ago
3 0

The molarity of a solution prepared by diluting 25.71 mL of 0.0706 M ammonium sulfate to 500.00 mL is 0,0036M.

<h3>What is molarity?</h3>
  • Molar concentration, also known as molarity, quantity concentration, or substance concentration, is a unit used to describe the amount of a substance in a solution expressed as a percentage of its volume.
  • The number of moles per liter, denoted by the unit symbol mol/L or mol/dm3 in SI units, is the most often used unit denoting molarity in chemistry.
  • One mol/L of a solution's concentration is referred to as one molar, or 1 M.
<h3>What is the molarity unit in the SI?</h3>
  • The most common unit for molarity in chemistry is moles per liter, which is represented by the unit sign mol/L or moldm3 in SI units.

Learn more about molarity here:

brainly.com/question/8732513

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What is the electron of (Kr)5s24d10
Elden [556K]

Answer: [Kr] 5s24d10 is the element Cadmium, Cd. It has 48 electrons.

5 0
3 years ago
Classify the reaction by their type. Note there may be more than one way to classify a reaction.
Nadya [2.5K]

Answer:

Redox reaction and single displacement

Explanation:

This reaction is first of all a redox reaction. A redox reaction is a reaction that involves both oxidation and reduction. Oxidation involves increase in oxidation number while reduction involves decrease in oxidation number.

Copper (Cu) had an oxidation number of "0" as a reactant but had an oxidation number of "2+" in the product [Cu(NO₃)₂] hence oxidation occurred.

Nitrogen (N) had an oxidation number of "5+" in the reactant (HNO₃) but had an oxidation number of "4+" in the product (NO₂) hence reduction also occurred.

Also, from the reaction, it can be deduced that copper (Cu) displaced hydrogen (H) from the nitric acid (HNO₃) solution to form copper (II) nitrate [Cu(NO₃)₂]. It should be noted that copper can displace hydrogen because it is higher than hydrogen in the electrochemical series. Hence, this reaction can also be called a single displacement reaction. A single displacement reaction is a reaction in which an atom of an element replaces another atom in a compound (as seen in the equation given in the question).

3 0
3 years ago
Someone please help me with this !
meriva

Answer:

1) 7.256 mol Br2 (Cl2)/(Br2)

The Br2 cancels out, so we have 7.256(2)

This is 14.512.

2) Number of moles = mass / molar mass

Number of moles = 239.7 g/ 35.5 g/mol

Number of moles =  6.8 mol

BrCl=13.6 mol

13.6(11.5.357)

1568.9 g

3) Repeat the same process with problem 2, given that there are 6.022x10^23 atoms in a mole.

Explanation:

Br2 + Cl2 → 2BrCl

4 0
3 years ago
Lead(II) nitrate and ammonium iodide react to form lead(II) iodide and ammonium nitrate according to the reaction
inessss [21]

Answer:

Explanation:

2 NH4I    + Pb(NO3)2   =  PbI2  + 2 NH4NO3

2 mol          1 mol

x ml             751 ml

0.550 M      0.380 M

0.380 mol/1000 ml  x 751 ml =  0.285 mol Pb(NO3)2

0.285 mol Pb(NO3)2 x 2 mol NH4I/1 mol  Pb(NO3)2=0.571 mol  NH4I  needed

0.571 mol  NH4I/0.550 mol/1000 ml=1038 ml

6 0
3 years ago
What is true of an Arrhenius acid?
expeople1 [14]
<span>B, An Arrhenius acid donates H+ ions.</span>
5 0
3 years ago
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