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Svetllana [295]
3 years ago
12

Can anyone can help me with 19 and 20 with process

Chemistry
1 answer:
Alexandra [31]3 years ago
7 0

Answer:

19.

a. 82.98 g/mol

b. 76.139 g/mol

c. 97.94 g/mol

d. 46.07 g/mol

e. 82.07 g/mol

f. 98.079 g/mol

20.

a. 336.24 g/mol

b. 120.366 g/mol

c. 278.1 g/mol

d. 187.56 g/mol

e. 260.5 g/mol

f.

Explanation:

19. Add up each individual atomic mass of each element. You will find this in the bottom of the element's box on the periodic table.

20. Be familiar with transforming names into compounds. After, do the same thing you did in problem 19.

- Hope that helped! Please let me know if you would like a more in-depth explanation.

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When carbon is in the atmosphere, what form is it in?
eduard

Answer:

gas

Explanation:

gas?

8 0
3 years ago
Read 2 more answers
Predict the products of the following reaction based upon solubility rules. (Separate substances in a list with a comma. Include
SSSSS [86.1K]

Hey there!:

As per solubility rules inorganic compounds that are soluble are

:Ammonium (NH4⁺),potassium (K⁺), sodium (Na⁺) : All ammonium, potassium and sodium salts are soluble. Exceptions:some transition metal compounds.

Bromides (Br⁻), chlorides (Cl⁻) and iodides (I⁻): Most bromides are soluble. Exceptions: salts containing silver, lead, and mercury.


So Rb2Cl2 is expected to be soluble.


 As per solubility rules inorganic compounds that are insoluble are  : Carbonates (CO₃²⁻), chromates (CrO₄²⁻), phosphates (PO₄³⁻), silicates (SiO₄²⁻): All carbonates, chromates, phosphates and silicates are insoluble. Exceptions: those of ammonium, potassium and sodium.


So CaCO3 is insoluble and precipitates

Therefore:

The completed equation is  :


Rb2CO3(aq)  + CaCl2(aq) → CaCO3(s) + Rb2Cl2(aq)


Hope that helps!

7 0
4 years ago
Cu+2AgNO
baherus [9]

Answer:

Mass of Ag produced = 64.6 g

Note: the question is, how many grams of Ag is produced from 19.0 g of Cu and 125 g of AgNO3

Explanation:

Equation of the reaction:

Cu + 2AgNO3 ---> 2Ag + Cu(NO3)2

From the equation above, 1 mole of Cu reacts with 2 moles of AgNO3 to produce 2 moles of Ag and 1 mole of Cu(NO3)2.

Molar mass of the reactants and products are; Cu = 63.5 g/mol, Ag = 108 g/mol, AgNO3 = 170 g/mol, Cu(NO3)2 = 187.5 g/mol

To determine, the limiting reactant;

63.5 g of Cu reacts with 170 * 2 g of AgNO3,

19 g of Cu will react with (340 * 19)/63.5 g of AgNO3 =101.7 g of AgNO3.

Since there are 125 g of AgNO3 available for reaction, it is in excess and Cu is the limiting reactant.

63.5 g of Cu reacts to produce 108 * 2 g of Ag,

19 g of Cu will react to produce (216 * 19)/63.5 g of Ag = 64.6 g of Ag.

Therefore mass of Ag produced = 64.6g

6 0
4 years ago
What type of boundary exists along the coast of California?
rjkz [21]

Answer:

I exist ;-;

Explanation:

8 0
3 years ago
Determine the mass of 2.75 moles of CaSO4. Record your work and your answer.
maw [93]

Explanation:

RFM \:  = 160 \: g \\ 1 \: mole \: weighs \: 160 \: g \\ 2.75 \: moles \: weighs \:  \frac{2.75 \times 160}{1} g \\  = 440 \: g

6 0
3 years ago
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