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3 years ago

Can anyone help me in my chemistry homework?

Chemistry

2 answers:

sdas [7]3 years ago

7 0

Answer:

what is in your chemistry home work I can try for...

natta225 [31]3 years ago

6 0

Answer:

1: A substance made by mixing other substances together.

2: Solutions, Suspensions, Colloids and Emulsion.

3: A particular kind of matter with uniform properties.

4: A homogenous mixture is that mixture in which the components mix with each other and its composition is uniform throughout the solution. A heterogenous mixture is that mixture in which the composition is not uniform throughout and different components are observed.

5: A solution is a homogeneous mixture of two or more components in which the particle size is smaller than 1 nm. Common examples of solutions are the sugar in water and salt in water solutions, soda water, etc. In a solution, all the components appear as a single phase.

6: A solution forms when one substance dissolves in another. The substance that dissolves is called the solute. The substance that dissolves it is called the solvent. For example, polar solvents dissolve polar solutes, and nonpolar solvents dissolve nonpolar solutes.

7: Common examples of suspension include the mixture of chalk and water, muddy water, the mixture of flour and water, a mixture of dust particles and air, fog, milk of magnesia, etc. Q2. Give the definition of suspension. Ans: A suspension is a heterogeneous mixture of two or more substances.

8: The Tyndall effect is light scattering by particles in a colloid or in a very fine suspension.

Explanation:

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Based on the Lewis/electron dot representation

blsea [12.9K]

Answer:

A. 1:3

Explanation:

If we look at the ions shown in the image attached to the question, we will notice that we have aluminum (Al^3+), a trivalent ion combining with the iodide ion (I^-).

Aluminum can easily give out its three outermost electrons to three atoms of iodine. If aluminum gives out its three electrons, it achieves the stable octet structure. Iodine atoms have seven electrons in their outermost shell. They only need one more electrons to complete their octet. This one electron can be gotten by the combination of three iodine atoms with one atom of aluminum. One electron each is transferred from the aluminum atom to each iodine atom to form AlI3 with a ratio of 1:3.

7 0

3 years ago

Good Morning This is a question I need help on pleas help

elena55 [62]

Answer:

Explanation:

North and South must always be opposite of each other.

8 0

3 years ago

(b) What is the pOH of 1.35x10⁻³ M HCl? Is the solution neutral, acidic, or basic?

nika2105 [10]

The pOH scale is similar to the pH scale in that a pOH of 7 is indicative of a neutral solution. A basic solution has a pOH less than 7, while an acidic solution has a pOH of greater than 7

<h3>What is pOH scale?</h3>

Based on the relative concentration of hydrogen and hydroxyl ions, the pH and pOH scales are used primarily in chemistry, biology, and soil science to describe and measure the acidity and basicity of neutral, acidic, and basic solutions in water.

The terms pH and pOH scale are frequently used and crucial for determining the chemical, biological, and soil health by converting the values of hydrogen or hydroxyl ion concentrations or by utilizing pH paper and meters.

The pH scale or chart, which measures the concentration of hydrogen and hydroxyl ions in acidic and alkaline solutions, was initially developed by Sorensen.

To learn more about pOH scale from the given link:

brainly.com/question/16631843

#SPJ4

5 0

2 years ago

How many hours will it take for the concentration of methyl isonitrile to drop to 14.0 %% of its initial value?

tiny-mole [99]

This is an incomplete question, here is a complete question.

The rearrangement of methyl isonitrile (CH₃NC) to acetonitrile (CH₃NC) is a first-order reaction and has a rate constant of 5.11 × 10⁻⁵ s⁻¹ at 472 K. If the initial concentration of CH₃NC is 3.00 × 10⁻² M :

How many hours will it take for the concentration of methyl isonitrile to drop to 14.0 % of its initial value?

Answer : The time taken will be, 10.7 hours

Explanation :

Expression for rate law for first order kinetics is given by:

$t=\frac{2.303}{k}\log\frac{a}{a-x}$

where,

k = rate constant = $5.11\times 10^{-5}s^{-1}$

t = time passed by the sample = ?

a = let initial amount of the reactant = 100

a - x = amount left after decay process = 14 % of 100 = 14

Now put all the given values in above equation, we get

$t=\frac{2.303}{5.11\times 10^{-5}}\log\frac{100}{14}$

$t=38482.72s=\frac{38482.72}{3600}=10.7hr$

Therefore, the time taken will be, 10.7 hours

7 0

4 years ago

Which of the following statements about recycling electronic waste is true?

otez555 [7]

Answer:

Explanation:

the correct one is D

5 0

3 years ago

Can anyone help me in my chemistry homework?​

Can anyone help me in my chemistry homework?