11. How much time had passed from Dalton to Thomson and from Thomson to Millikan?

If 1.00 g of reactant a is mixed with 2.00 g of reactant b, what is the theoretical yield of product d, in grams (g)? the molar

WARRIOR [948]

The chemical reaction is as follows:

$a+b\rightarrow d$

Mass of reactant a is 1 g and molar mass is 94 g/mol. Converting mass into number of moles as follows:

$n=\frac{m}{M}=\frac{1g}{94 g/mol}=0.0106 mol$

Now, 1 mole of reactant a gives 1 mole of product d thus, 0.0106 mol of reactant a gives 0.0106 mol of product d.

Molar mass of product d is 125 g/mol, converting number of moles into mass as follows:

m=n×M=0.0106 mol×125 g/mol=1.33 g

Similarly, molar mass of reactant b is 118 g/mol and mass is 2 g, converting mass into number of moles,

$n=\frac{m}{M}=\frac{2g}{118 g/mol}=0.017 mol$

1 mol of reactant b gives 1 mol of product d thus, 0.017 mol will give 0.017 mol of product d.

Converting number of moles into mass as follows:

m=n×M=0.017 mol×125 g/mol=2.12 g

Here, reactant that produces lesser product is limiting reactant and the amount of product it forms is theoretical yield.

Therefore, theoretical yield is 1.33 g.

6 0

3 years ago

Which diagram shows a voltaic cell?

boyakko [2]

Since you have not included the figures with the diagrams to select the right answer, I am going to explain the main differences that lead you to differentiate electrochemical cells.

There are four important terms needed to identify the electrochemical cells: electrolysis, electrochemical cells, electrolitc cells and voltaic cells.

1) Electrochemical cell: is a device that uses a chemical reaction (redox reaction) to produce electricity or that uses electricity to product a chemical reaction.

2) Electrolysis: is the production of a chemical reaction using electricity.

3) Electroltic cell: is one of the two types of electrochemical cell. It is that in which electricity is used to produce the chemical reaction, i.e. where electrolysis happens. For example, the decomposition of sodium chloride brines is done in an electrolitic cell.

4) Galvanic cell: is the other type of electrochemical cell. It is that in which chemical reactions (redox reactions) produce electricity. The battery of the car is an example of a galvanic cell.

Here you are asked to identify which diagram shows a voltaic cell.So, you need to lool at:

- a redox reaction is happening

- this redox reaction is producing electricity (not that the electricity is producing the reaction)

Remember that a redox reaction is where some atoms are being reduced (gaining electros) and others are being oxidized (losing electrons).

Tha information will let you to choose the righ diagram.

6 0

3 years ago

. True or False Viruses can range from the common cold to something like Ebola which can be deadly

Tems11 [23]

Answer:

True

Explanation:

learned it from class on a video

3 0

3 years ago

The following ionic compounds are found in common household products. write the formulas for each compound:

victus00 [196]

Answer:

A. Potassium phosphate: K3PO4

B. Copper (II) sulfate: CuSO4

C. Calcium chloride: CaCl2

D. Titanium dioxide: TiO2

E. Ammonium nitrate: NH4NO3

F. Sodium bisulfate: NaHSO4

Explanation:

All are ionic salts with different valent (mono valent cation or poly valent cation and anions) ions.

3 0

3 years ago

What is the luster of sedimentary rocks

Darya [45]

Minerals,properties color,streak,hardness,cleavage or fracture,igneousrock,metamorphic rock,sedimentary rock,extrusive rock,clastic,physical weathering,erosion

6 0

3 years ago