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maks197457 [2]
3 years ago
6

Baking bread is a chemical change because _____ A.it changes color B.bread cannot be changed back into dough C.new substances ar

e created from the ingredients D.all of the above
Chemistry
1 answer:
yan [13]3 years ago
7 0
I say the answer is D
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What is the predominant intermolecular force between ibr molecules in liquid ibr?
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Answer is: dispersion forces.

The London dispersion force is the weakest intermolecular force.

Dispersion force is also called an induced dipole-induced dipole attraction.

The London dispersion force (intermolecular force) is a temporary attractive force between molecules.

The dipole beetween iodine and bromine is weak.

8 0
4 years ago
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A sound wave traveling through a certain freshwater lake has a frequency of 349.2 Hz and a wavelength of 4.25 m. What is the spe
dmitriy555 [2]

Answer:

The speed of a spound wave in this water is 1484.1 m/s

Explanation:

Step 1: Data given

Frequency = 349.2 Hz

Wavelength = 4.25 m

Step 2: Calculate the speed

v = f*λ

⇒ with v= the speed of a sound wave in this water

⇒ with f = the frequency = 349.2 Hz

⇒ with λ = the wavelength = 4.25 m

v = 349.2 Hz * 4.25 m = 1484.1 m/s

The speed of a spound wave in this water is 1484.1 m/s

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3 years ago
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When doing a recrystallization what observations would prompt you to perform a hot filtration?
KATRIN_1 [288]
Answer is: <span>because dissolved compounds can crystallizing from solution during filtration and forming crystals on the filter paper or funnel.
</span>Recrystallization<span> is a technique used to purify chemicals by dissolving both impurities and a compound in an appropriate solvent, either compound or impurities can be removed from the solution, leaving the other behind.</span>
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4 years ago
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If an atom has 2 electrons outside of its nucleus, which combination of protons and neutrons would result in a neutral atom?
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8 0
3 years ago
In the laboratory you dilute 2.49 ml of a concentrated 6.00 m hydrochloric acid solution to a total volume of 50.0 ml. what is t
Marizza181 [45]
Equation: M1V1 = M2V2

Where M = concentration & V = volume

Step 1: Write down what is given and what you are trying to find

Given: M1 = 6.00M, V1 = 2.49mL, and V2 = 50.0mL
Find: M2

Step 2: Plug in the values into the equation

M1V1 = M2V2
(6.00M)(2.49mL) = (M2)(50.0mL)

Step 3: Isolate the variable (Divide both sides by 50.0mL so M2 is by itself)

(6.00M)(2.49mL) / (50.0mL) = M2

Answer: M2 = 0.30M 
*Don't forget sig figs & units!
4 0
3 years ago
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