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3 years ago

If you could answer it would be a huge help, thank you!

Chemistry

2 answers:

padilas [110]3 years ago

5 0

A mixture is the physical combination of two or more substances in which the identities are retained and are mixed in the form of solutions .

It is a homogeneous mixture since the components of tap water are blended so that it looks like a single substance, since you only see water and nothing else.

(Heterogenous mixtures are mixtures in which the separate components that make up the substance are visible .)

It is homogeneous too ...

Maru [420]3 years ago

5 0

Answer:

1. A mixture is a material made up of two or more different substances which are physically combined.A mixture is the physical combination of two or more substances in which the identities are retained and are mixed in the form of solutions, suspension and colloids.

2. Tap water is a homogeneous mixture, not heterogeneous. This is because tap water has dissolved minerals inside it, but they are equally distributed throughout the water.

3. 70% rubbing alcohol means that 70% of the molecules in the rubbing alcohol is actually alcohol. The other 30% is water. As I have stated at the start the answer, although alcohol is technically pure, rubbing alcohol is not purely made of alcohol.

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Select the statement (2.5 points) (A) Bonding is the joining of the two atoms in a stable arrangement. (B) Through bonding , ato

Tanya [424]

Answer:

The correct answer is (D) All of the above.

Explanation:

A chemical bond is the attraction force between atoms (covalent bond) or between oppositely charged ions (ionic bond) to form a stable arrangement. In order to get a stable arrangement must be fulfilled the octet rule. This establishes that an atom could share (covalent bond) win or lose (ionic bond) electrons with other atoms till every atom has eight valence electrons. The complete outer shell of valence electrons make elements stable to get a stable noble gas configuration.

6 0

3 years ago

1/2 * m * v ^ 2 = mgh

viktelen [127]

C. the square root of 2gh

Explanation:

The square root of 2gh is equivalent to Torricelli's law in the equation.

given expression:

$\frac{1}{2}$ m v² = mgh

to find v, we make it the subject of the expression:

*multiply both sides of the equation by 2:

2 x( $\frac{1}{2}$ m v² )= 2 (mgh)

mv² = 2mgh

*cancel the mass, m appearing on both sides:

v² = 2gh

* find the square root of both side

v = √2gh

Learn more:

Expression brainly.com/question/11207748

#learnwithBrainly

4 0

3 years ago

"what is the mole fraction of solute in a 3.87 m aqueous solution?"

sattari [20]

The mole fraction of solute in a 3.87 m aqueous solution is 0.0697

<h3> calculation</h3>

molality = moles of the solute/Kg of the solvent

3.87 m dissolve in 1 Kg of water= 1000g

find the moles of water= mass/molar mass

that is 1000 g/ 18 g/mol= 55.56 moles

mole of solute = 3.87 moles

mole fraction is = moles of solute/moles of solvent

that is 3.87/ 55.56 = 0.0697

5 0

2 years ago

Read 3 more answers

A certain first order reaction has a half-life of 54. 3 s. How long will it take (in s) for the reactant concentration to decrea

Maksim231197 [3]

Answer:

82.4 s

Explanation:

Find the NUMBEr of half lives...then multiply by 54.3

2.27 = 6.5 (1/2)^n

log (2.27/6.5) / log (1/2) = n = 1.52 half lives

1.52 * 54.3 = 82.4 s

8 0

1 year ago

Define satt and give an example?

Veseljchak [2.6K]

Answer:

<h2>Heyy..Here is your answer..</h2>

<h2>Satt is the German word for full and it most likely comes from the same Latin word that saturated.</h2>

<h2>Hope it helps..!!</h2>

7 0

2 years ago