#340 You mix an aqueous solution of managanese

You mix an aqueous solution of managanese - Inorganic Chemistry

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You mix an aqueous solution of managanese (IV) chloride (MnCl4) with a solution of silver nitrate (AgNO3) and a white precipitate forms. What is the identity of that precipitate? please enter using molecular formula where manganese (IV) chloride (MnCl4) would be written as Mncl4.

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#285 Which statement is correct?

Which statement is correct? - Inorganic Chemistry

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Which statement is correct?

A. Protons are much more massive than neutrons
B. Neutrons are much more massive than protons
C. Electrons have a much smaller mass than that of protons and neutrons
D. Electrons, Protons, and neutrons have about the same mass

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A. Protons are much more massive than neutrons - Incorrect (Because protons and neutrons mass nearly the same)
B. Neutrons are much more massive than protons - Incorrect
C. Electrons have a much smaller mass than that of protons and neutrons - Correct (Because we know protons and neutrons mass nearly the same but electrons mass is less than protons and neutrons)
D. Electrons, Protons, and neutrons have about the same mass - Incorrect

#284 Rank these species in order of increasing

Rank these species in order of increasing - Inorganic Chemistry

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Size of atoms
Rank these species in order of increasing atomic size: Be, Na, Mg

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Order of increasing atomic size
(smallest) Be < Mg < Na (largest)

Explanation
We know that in the periodic table if we go top to bottom atomic size is increase and when we go left to right atomic size is decreases.

Be at the top so atomic size is smallest and when we come down atomic size is increase but Na present on left So Na size is the largest in Comparision of Mg.

#283 Write the Chemical Formula for Hydrochloric

Write the Chemical Formula for Hydrochloric- Inorganic Chemistry

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Write the Chemical Formula for Hydrochloric Acid

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Chemical Formula :- Hydrochloric acid

Hydrochloric acid - HCL

Elements involv in this formula is - Hydrogen Chlorine

#282 Are all non-metal elements

Are all non-metal elements - Inorganic Chemistry

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Are all non-metal elements main-group elements?

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Yes all non - metal are main group element In the periodic table there positioning helium are

#280 Write the equilibrium expression for each

Write the equilibrium expression for each - Inorganic Chemistry

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Write the equilibrium expression for each of the following reactions. Be sure to pay attention to physical states:

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Ans. Equilibrium Expression

Formate for the write equilibrium expression is

Note - Pure solid and liquid concentration are not considered in the equilibrium expression

#202 Specify the local electron geometries about the atoms

Specify the local electron geometries about the atoms - Inorganic Chemistry

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Specify the local electron geometries about the atoms labeled a-d unshared electron Paris affect local geometry and are included in the structural formula.
for each atom enter one of the following
tetrahedral, square planar, trigonal planar, trigonal pyramidal, or linear.

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Local electron geometry

Trick - It is easy to find out the local electron geometry by hybridization
if we calculate the hybridization of a particular atom then we easly to describe the geometry according to their hybridization state.

#174 Which one of the following is the main group element

Which one of the following is the main group element - Inorganic Chemistry

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Which one of the following is the main group element?
Cu
Cs
Ce
Co
None of the above

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Only the S-block and p-block elements are the main group elements.

cu - Transition element
cs - Main group element
ce - Lanthanide element
co - Transition element

So the correct option is
Cs - Main group element

#146 How many grams of CO2 are produced in the combustion

How many grams of CO2 (Mm = 44.0 g/mol) are produced - Inorganic Chemistry

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How many grams of CO2 (Mm = 44.0 g/mol) are produced in the combustion of 23.0 g of C4H10 (Mm = 58.1 g/mol)?
2C4H10 + 13O2 8CO2 + 10H2O
mass CO2 = ___g
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#143 A Beaker of water is heated to increase its solubility

A Beaker of water is heated to increase its solubility - Inorganic Chemistry

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A Beaker of water is heated to increase its solubility, and it is saturated with a solid solute compound, such as salt. Then the solution is cooled down and a small salt crystal is dropped into the water. What would you expect to happen?
A. The Salt crystal will cause all of the dissolved salt to immediately crystallize.
B. The salt crystal will dissolve.
C. The salt crystal will fall to the bottom of the beaker and will not dissolve because the solution is saturated.
D. The salt crystal will float on top of the water because it will have the same density as all of the salt in the water.

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A saturated solution does not dissolve any more solid solute compound (salt) so if we add small salt crystal in colled saturated solution then the salt crystal will fall to the bottom of the beaker and will not dissolve because the solution is saturated.
So the correct option is
C. The salt crystal will fall to the bottom of the beaker and will dissolve because the solution is saturated.

#130 A series of sulfate samples is to be analyzed

A series of sulfate samples is to be analyzed - Inorganic Chemistry

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A series of sulfate samples is to be analyzed by precipitation as BasO4. If it is known that the sulfate content in these samples ranges between 20 and 55%, what minimum sample weight should be taken to ensure that a precipitate weight no smaller than 0.300 g is produced? What is the maximum precipitate weight to be expected if this quantity is taken?
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According to the data, we know that the minimum range is 20% and the maximum is 55%. Now, if the minimum should be 0.300 g, means that this quantity belongs to the 20% so:
0.300 g --------> 20%
X ----------------> 100%
X = 0.300 * (100/20) = 1.5 g of sample
For the maximum it should be:
Y = 1.5 g * (55/100) = 0.825 g
If you need anything else or still have doubts, or need something to be fixed, tell me in a comment and I'll gladly help you out.
Hope this helps

#125 Write the balanced chemical equation for the second step

Write the balanced chemical equation for the second step - Inorganic Chemistry

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Consider the reaction
NO₂ (g) + CO(g) CO₂ (E) + NO(g)
for which the rate equation has been shown by experiment to be
Rate = k[NO2]² 
_{The first step of the two-step reaction is the rate-determining step. The equation for this step is}
NO₂ (g) + NO₂ (g) -> NO₂ (g) + NO(g)
(a) Write the balanced chemical equation for the second step, which completes the reaction
(b) The table below gives the kinetic data for the above reaction at a constant temperature

Determine the values of x and y in the table. Show detailed workings.
8. The rate of consumption of B in the reaction A + 3B C +2E is 2.0 mol.dm ⁼³.s⁼¹
(i) Determine the rate of the reaction. Show detailed workings.
(ii) Determine the rates of formation and consumption of A, C and E. Show detailed workings.
9. A certain reaction has a rate law of the form: v = k[A]*[B] )
(i) If tripling the initial concentration of reactant A multiplies the initial rate by 27, calculate the order of the reaction with respect to A. i.e. solve for x. Show detailed workings.
(ii) Determine the overall order of the reaction Show how the answer was obtained
10. Consider the reaction showing the decomposition of C₂ H₅ Cl(g)
C₂H₅Cl(g) -> C₂H₄(g) + HCl(g)
The above reaction follows first-order kinetics with respect to C₂H₅Cl. The rate constant is
1.60 x 10-6-1 for the reaction conducted at 650 K. In an investigation of the decomposition of
C₂ H₅ Cl (g) it was found that it takes 87.0 hrs for the concentration of C₂ H₅ Cl to drop to 0.100 mol L ^-1
(a) Calculate the initial concentration of C₂H₅Cl. Show detailed workings
(b) Calculate the concentration of C₂H₅Cl after 125 hrs. Show detailed workings
(c) Calculate the time in hrs) that it will take for 75.0% of the C₂H₅Cl to decompose. Show detailed workings.

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#116 Which of the following is an incorrect statement?

Which of the following is an incorrect statement? - Inorganic Chemistry

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Which of the following is an incorrect statement?
AgNo3(aq) + NaCl(aq) -> AgCl(s) + NaN3(aq) is a precipitation reaction
NH3(g) + HCl(g) -> NH4Cl is an acid-base reaction
2Mg(s) + O2(g) -> 2MgO(s) is a precipitation reaction
CH4(g) + 2O2(g) -> CO2(g) + 2H2O(g) is an oxidation reduction reaction
None of the above
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#115 The Balanced equation for the reaction between Co(OH)3 and K2S is

The Balanced equation for the reaction between Co(OH)₃ and K₂S is: - Inorganic Chemistry

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The Balanced equation for the reaction between Co(OH)₃ and K₂S is

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 Balanced Equation

#114 What is one way to lower the pH of a liquid?

What is one way to lower the pH of a liquid? - Inorganic Chemistry

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What is one way to lower the pH of a liquid?
1) Mix it with a basic liquid
2) Mix it with an acidic liquid
3) Pour out some of the original liquid
4) None of the above
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#99 In the lewis electron Dot Structure for

In the lewis electron Dot Structure for - Inorganic Chemistry

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11. In the lewis electron Dot Structure for AIBr3, how many dots (electrons) should be shown around each Br?
12. In the lewis electron Dot Structure for AIBr3, what charge should be shown on AI?
13. In the lewis electron Dot Structure AIBr3, what charge should be shown on each Br?
14. In the lewis electron Dot Structure for AIBr3, what charge should be shown on each Br?
15. In the lewis electron Dot Structure for Li2O, how many dots (electron) should be shown around the O?
16. In the lewis electron Dot structure for Li2O, what charge should be shown on each Li?
17. In the lewis electron Dot structure for Li2O, what charge should be shown on the O?
18. In the lewis electron Dot structure for CaO, how many dots (electrons) should be shown around the Ca?

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