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2 years ago

Cu + 2AgNO3 es002-1.jpg 2Ag + Cu(NO3)2 How many moles of copper must react to form 0.854 mol Ag?

1 answer:

4 0

Balance Chemical Equation is as follow,

<span> Cu + 2 AgNO</span>₃ → 2 Ag + Cu(NO₃)₂

According to Balance Equation,

2 Moles of Ag is produced by reacting = 1 Mole of Cu
So,
0.854 Moles of Ag will be produced by reacting = X Moles of Cu

Solving for X,
X = (0.854 mol × 1 mol) ÷ 2 mol

X = 0.427 Moles of Cu
Result:
0.854 Moles of Ag are produced by reacting 0.427 Moles of Cu.

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How long would it take for 1.50 mol of water at 100.0 ∘c to be converted completely into steam if heat were added at a constant

Aleksandr-060686 [28]

To determine the time it takes to completely vaporize the given amount of water, we first determine the total heat that is being absorbed from the process. To do this, we need information on the latent heat of vaporization of water. This heat is being absorbed by the process of phase change without any change in the temperature of the system. For water, it is equal to 40.8 kJ / mol.

Total heat = 40.8 kJ / mol ( 1.50 mol ) = 61.2 kJ of heat is to be absorbed

Given the constant rate of 19.0 J/s supply of energy to the system, we determine the time as follows:

Time = 61.2 kJ ( 1000 J / 1 kJ ) / 19.0 J/s = 3221.05 s

5 0

2 years ago

Read 2 more answers

Chlorine can bond with fluorine to form CIF. Chlorine can also bond with lithium to form LiCI Which compound will have a greater

Sergio [31]

Answer: $ClF$ will have a greater partial charge.

Explanation:

A polar covalent bond is defined as the bond which is formed when there is a low difference of electronegativities between the atoms, thus resulting in charge difference. Example: $ClF$

Non-polar covalent bond is defined as the bond which is formed when there is no difference of electronegativities between the atoms and thus there is no charge difference. Example: $F_2$

Ionic bond is formed when there is complete transfer of electron from a highly electropositive metal to a highly electronegative non metal. The electronegative difference between the elements is high. The charges on cation and anion neutralise each other. Example: $LiCl$

Thus as $ClF$ will have greater partial charge.

5 0

2 years ago

The name carbohydrate comes from the fact that many simple sugars have chemical formulae that look like water has simply been ad

GREYUIT [131]

Answer:

The maximum mass of water produced is $m__{H_2O}} =116 \ g$

Explanation:

From the question we are told that

The mass of sucrose is $m_s = 200 \ g$

The chemical formula for sucrose is $C_{12} H_{22} O_{11}$

The chemical equation for the dissociation of sucrose is

$C_{12} H_{22}O_{4} \to 12C + 11H_2O$

The number of moles of sucrose can be evaluated as

$n = \frac{m}{Z}$

Where Z is the molar mass of sucrose which has a constant value of

$Z = 342 \ g/mol$

$n = \frac{200}{342}$

$n =0.585$

From the chemical equation one mole of sucrose produces 11 moles of water so 0.585 moles of sucrose will produce x moles of water

Therefore

$x = \frac{0.585 * 11}{1}$

$x = 6.433 \ moles$

Now the mass of water produced is mathematically represented as

$m__{H_2O}} = x * Z__{H_2O}$

Where $Z__{H_2O}$ is the molar mass of water with a constant values of $Z__{H_2O}} = 18 \ g/mol$

$m__{H_2O}} = 6.43* 18$

$m__{H_2O}} =116 \ g$

7 0

2 years ago

Molar solubility of CuBr Ksp = 6.3 x 10-9

maksim [4K]

First, lets write the equation: CuBr--> Cu+2 + Br-
then, write the Ksp expression: Ksp= [Cu+2] [Br-]= 6.3 x 10-9
We let x be the concentration of Ksp that dissolved. Ksp= (x) (x)= 6.3 x 10-9.
Now we solve for x

X^2= 6.3x10-9
x= square root(6.3x10-9)
x= 7.94x10-5

6 0

2 years ago

You need to prepare 2.00 L of 0.100 M Na2CO3 solution. The best procedure is to weigh out: ___________

jeka94

Answer:

The answer to your question is letter C

Explanation:

Data

Volume = 2 L

Molarity = 0.100 M

Molecular weight Na₂CO₃ = (2 x 23) + (1 x 12) + (3 x 16)

= 46 + 12 + 48

= 106 g

Process

1.- Calculate the grams of Na₂CO₃ needed

106 g ---------------- 1 mol

x ---------------- 0.1 moles

x = (0.1 x 106) / 1

x = 10.6 g

2.- Calculate the grams of Na₂CO₃ needed for 2 liters of solution

10.6 g -------------- 1 liter

x -------------- 2 liters

x = (10.6 x 2) / 1

x = 21.2 grams of Na₂CO₃

4 0

2 years ago

Read 2 more answers