1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
emmainna [20.7K]
4 years ago
15

1) According to the balanced chemical equation below; how many atoms of silver (Ag) will be produced from 100 g of copper (Cu) w

ith excess silver nitrate (AgNO3)? Cu + 2 AgNO3 ⇒ Cu(NO3) 2 + 2 Ag
Chemistry
1 answer:
raketka [301]4 years ago
4 0

Answer:

There will be produced 1.89x10²⁴ atoms of Ag

Explanation:

This is the reaction:

Cu + 2 AgNO₃ ⇒ Cu(NO₃)₂ + 2 Ag

1 mol of copper reacts with 2 moles of silver nitrate to produce solid silver and 1 mol of copper nitrate.

Ratio is 1:2 so from the moles I have of Cu, I'll produce the double of moles of silver.

100 g / 63.55 g / m = 1.57 moles of Cu

1.57 moles of Cu will produce 3.14 moles of Ag.

Let's calculate the number of atoms, by NA

1 mol of Ag has NA atoms (6.02x10²³)

3.14 moles of Ag will have (3.14  . NA) = 1.89x10²⁴ atoms of Ag

You might be interested in
If 16g of <img src="https://tex.z-dn.net/?f=CH_%7B4%7D" id="TexFormula1" title="CH_{4}" alt="CH_{4}" align="absmiddle" class="la
sammy [17]

43.56 grams of  are produced if 16g of  CH4 reacts with 64g of O2.

Explanation:

Balance equation for the reaction:

CH4 + 2O2⇒ CO2 +2H2O

Data given : mass of CH4 =16 grams  atomic mass = 16.04 grams/mole

                    mass of water 36 gram  atomic mass = 18 grams/moles

                   mass of CO2=?                atomic mass = 44.01 grams/mole

number of moles = \frac{mass}{atomic mass of one mole}    equation 1

number of moles in CH4

   n = \frac{16}{16.04}

       = 0.99 moles

Since combustion is done in presence of oxygen hence it is an excess reagent and methane is limiting reagent so production of CO2 depends on it.

From the equation

1 mole of CH4 gave 1 mole of CO2

O.99 moles of CH4 will give x moles of CO2

\frac{1}{1} = \frac{x}{0.99}

x = 0.99 moles of carbon dioxide

grams of CO2 = number of moles x atomic mass

                         = 0.99 x 44.01

                          = 43.56 grams of CO2 is produced.

4 0
3 years ago
A solution of H2SO4 with a molal concentration of 5.25m has a density of 1.266 g/ml. what is the molar concentration of this sol
Gelneren [198K]
So first find the moles of the H₂SO₄: Mass = Moles x RFM 
so mass = 5.25 x 98 = 514.5g of <span>H₂SO₄</span>

so to find how many Liters of solution use:

Volume = Density x Grams of solute (per kg +1000)

density = 1.266 x 514.5 +1000 = 1917.357kg/l

now use equation: Conc. = Moles / Volume of solution to find the conc.
                               Conc. = 5.25 x 1917.357 = 4.39Mol⁻¹
Hope that helps
6 0
3 years ago
Read 2 more answers
(QUICK) Based on difference in electronegativities between atoms, which is the most polar bond pair? H — S H — Cl H — O H — F
kupik [55]
First, you need to have a periodic table that contains the electronegativities values. once you have them, you just need to subtract the values of the atoms and each bond. I have attached a table with these values. also, it does not matter then order in which you subtract them because they are always positive values. even though you get negative values in your calculator, just make it positive.

H-S----> 2.1 - 2.5= 0.4
H-Cl---> 2.1 -3.0=0.9
H-O---> 2.1- 3.5= 1.4
H-F----> 2.1 - 4.0= 1.9

HF is the most polar because it has the highest electronegativity difference.

4 0
3 years ago
Read 2 more answers
Answer fast plzzzzzzzz
viva [34]

Answer:

2nd and 3rd

Explanation:

5 0
3 years ago
Read 2 more answers
Calculate the answer. Express it in scientific notation. All answers should have the correct number of significant figures.
beks73 [17]

(1.632) (4.0 x 104)

= (1.632)(416)

=678.912

6.8* 10^2.

Not sure if it's the right sig figs.

8 0
3 years ago
Read 2 more answers
Other questions:
  • A student is given a sample of CuSO4(s) that contains a solid impurity that is soluble and colorless. The student wants to deter
    10·1 answer
  • PLEASE HELP!! Thanks! How much heat (in kJ) is required to warm 13.0 g of ice, initially at -10.0 ∘C, to steam at 111.0 ∘C? The
    13·1 answer
  • 2 NH3 + 2 O2 → N2O + 3 H2O If 80.0 grams of O2 are reacted in the above reaction, how many grams of N2O will be produced (MM O2=
    5·1 answer
  • What is a chemical property of soda ash
    9·1 answer
  • What evidence is there that all state of matter have mass
    7·1 answer
  • How can you tell if a compound is a solid, liquid, gas, or aqeous.
    10·1 answer
  • Which isotope of sulfur is the most naturally abundant
    8·2 answers
  • If 3.25 g N2 gas is introduced into an evacuated 1.50 L flask at 325 K, what is the pressure
    13·1 answer
  • What is the mole fraction of NaOH in an aqueous solution at the contains 22.8% NaOH by mass
    15·1 answer
  • Why are being flammable and combustible considered to be chemical properties and not physical properties?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!