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3 years ago

1. please :))))))))))))))))

Chemistry

1 answer:

natta225 [31]3 years ago

8 0

Answer:

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Explanation:

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Help!!!

aleksley [76]

Answer:

Q1) Distillation relies on evaporation to purify water

Explanation:

contaminated water is heated to form steam. inorganic compounds and large non-volatile organic molecules do not evaporate with the water and are left behind. The steam then cools and condenses to form purified water

3 0

3 years ago

You have two solid substances that look the same. What measurements would you take and which tests would you preform to determin

ASHA 777 [7]

Answer:

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5 0

3 years ago

Calculate the enthalpy change for the thermite reaction: 2Al(s)+Fe2O3(s)→2Fe(s)+Al2O3(s), ΔH∘rxn=−850 kJ when 12.0 mol of Al und

djverab [1.8K]

Answer: The enthalpy of the reaction for given amount of aluminium will be $-51.0\times 10^2kJ$

Explanation:

We are given:

Moles of aluminium = 12 moles

For the given chemical reaction:

$2Al(s)+Fe_2O_3(s)\rightarrow 2Fe(s)+Al_2O_3(s);\Delta H^o_{rxn}=-850kJ$

By Stoichiometry of the reaction:

If 2 moles of aluminium produces -850 kJ of energy.

Then, 12 moles of aluminium will produce = $\frac{-850kJ}{2mol}\times 12mol=-5100kJ$ of energy.

Converting this into three significant figures, we get:

$\Rightarrow -5100kJ=-51.0\times 10^{2}kJ$

Thus, the enthalpy of the reaction for given amount of aluminium will be $-51.0\times 10^2kJ$

4 0

3 years ago

Consider the following data showing the initial rate of a reaction (A→products) at several different concentrations of A. [A](M)

babymother [125]

Given:

A → Products

[A] M Rate(M/s)

1. 0.15 0.014

2. 0.30 0.113

3. 0.60 0.905

To determine:

Order of the reaction

Explanation:

The rate of the given reaction can be expressed as:

Rate = k [A]ⁿ-----(1)

where k = rate constant

[A] = concentration of A

n = reaction order

Based on equation (1) the Rates 1 and 2 can be expressed as:

0.014 = k[0.15]ⁿ ------(3)

0.113 = k[0.30]ⁿ-------(4)

Dividing eq (4) by (3) we get:

0.113/0.014 = [0.30/0.15]ⁿ

8 = 2ⁿ

i.e. 2³ = 2ⁿ

n = 3

Ans: Thus, the order of the reaction is 3

6 0

4 years ago

Read 2 more answers

Exercise 3: Alkynes A. For the following alkyne structure, state the hybridization of each carbon in the molecule and predict th

Lerok [7]

For the following alkyne structure, the hybridization of each carbon in the molecule is C1 = Sp3, C2=Sp3, C3=Sp, C4=Sp, C5= Sp3

Bond angle=

1)C1-C2-C3= 109 degree 28

2)C2-C3-C4=180 degree

3)C3-C4-C5= 180 degrees

Effective molecular charge order= S> Si> AI> Mg

What is hybridization?

In chemistry, orbital hybridization (or hybridization) is the concept of mixing atomic orbitals to form new hybrid orbitals (having different energies, shapes, etc. than the component atomic orbitals) suitable for electron pairing. Yes, they form chemical bonds through valence bond formation.

Hybridization is defined as the concept of mixing two atomic orbitals to create a new type of hybrid orbital. This mixing usually results in the formation of hybrid orbitals with very different energies, shapes, etc.

To know more about hybridization, click here- brainly.com/question/22765530

#SPJ4

5 0

1 year ago