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Romashka-Z-Leto [24]
3 years ago
14

What are the diaganol relationship between lithium and magnesium?​

Chemistry
1 answer:
olga55 [171]3 years ago
6 0

Answer:

Explanation:

Diagonal relationship of lithium with magnesium

1) Both have almost similar electronegativities. 2) Both Li and Mg are quite hard. They are harder and lighter than other elements in their respective groups. 3) Both LiOH and Mg(OH)2 are weak bases.

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The rate law for the reaction 2A + B →C is –rA= kACA2CBwithkA= 25 (L/mol)2sec. What arekBandkC?
givi [52]

Explanation:

The given reaction equation is as follows.

             2A + B \rightarrow C

So, rate constants for different reactants and products written as follows.

             \frac{-k_{A}}{\text{stoichiometric coefficient of A}} = \frac{-k_{B}}{\text{stoichiometric coefficient of B}} = \frac{k_{C}}{\text{stoichiometric coefficient of C}}

As per the reaction equation, the stoichiometric coefficients of reactants and products are as follows.

         A = -2

         B = -1

         C = 1

Therefore,

      \frac{-k_{A}}{\text{stoichiometric coefficient of A}} = \frac{-k_{B}}{\text{stoichiometric coefficient of B}} = \frac{k_{C}}{\text{stoichiometric coefficient of C}}

      \frac{-k_{A}}{-2} = \frac{-k_{B}}{-1} = \frac{k_{C}}{1}    

             \frac{-k_{A}}{-2} = k_{B} = k_{C}

Hence,          k_{B} = k_{C} = \frac{25}{2} (L/mol)^{2}

                                          = 12.5 (L/mol)^{2}

Thus, we can conclude that k_{B} and k_{C} are 12.5 (L/mol)^{2}.

5 0
3 years ago
Balance the following equation<br><br> CH₄ + O₂ → CO₂ + H₂O
nalin [4]

Answer:

CH4 + 2 O2 - - - > CO2 + 2 H2O

Explanation:

hope this helps,

you can check by adding all the numbers on both sides

please mark it

3 0
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How should students prepare to use chemicals in the lab? Select one or more: Sort the lab chemicals in alphabetical order for qu
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Answer:

Sort the lab chemicals in alphabetical order for quick access.

Become familiar with the chemicals to be used, including exposure or spill hazards.

Locate the spill kits and understand how they are used.

Explanation:

There are many chemicals in a laboratory hence they should be sorted out and arranged in alphabetical order so that theory can easily be identified and located whenever they are required.

The properties of each chemical should be known especially hazards connected to exposure or spill of the chemicals.

The students should also familiarize themselves with the contents of spill kits and how they are used.

7 0
3 years ago
A salt crystal has a mass of 0.17 mg . how many nacl formula units does it contain?
Llana [10]
<span>1. Calculate the mass of the formula unit (fu). Na= 22.990 g/mol Cl= 35.453 g/mol so total = 22.990 g/mol + 35.453 g/mol = 58.443 g/mol 1 mol = 6.02 x10^23 formula units, so (58.443 g/mol)*(1 mol/6.02x10^23 fu)= 9.7x10^-23 2. Convert mass to grams: (0.17 mg)*(1 g/1000 mg) = 0.00017 g 3. Calculate number of formula units: 0.00017 g x (1 fu/9.7x10^-23 g) = 1.8x10^18 Or more simply: (.00017 g) * (1 mol/58.443 g) * (6.02x10^23 fu/1mol) = 1.8x10^18</span>
7 0
4 years ago
This man is using a block and tackle to lift a heavy bale of cotton. the block and tackle contains which simple machine?
AlladinOne [14]
The simple machine used is called atwood machine. 
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3 years ago
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