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3 years ago

Is the osmosis egg challenge a chemical reaction?

Chemistry

2 answers:

blsea [12.9K]3 years ago

8 0

Answer:

yes it is

Explanation:

because what ever you mix in it it would explode and give a chemical reaction

Vikki [24]3 years ago

6 0

Answer:

Answer is C because in exothermic reactions, energy releases.

in Cellular respiration,

ATP+H20 (water) = ADP+ Pi + Energy

So celullar respiration is exothermic and releases energy

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What physical changes occured while you ate breaskfast?

KatRina [158]

Answer:

Now eating can change food both physically and chemically. Once your spit touches the food chemicals in the saliva begin to change the food chemically.

Explanation:

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4 years ago

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Dimas [21]

Answer:

There are 6 atoms of oxygen in 2Ca(NO3)2

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3 years ago

If I have 27L of a 0.003 M solution of salt water, how many molecules of salt do I have?

creativ13 [48]

Answer:

no. of molecules of salt = 5.046 x 10²²

Explanation:

Data given:

Volume of the Solution = 27 L

Molarity of the Solution = 0.003

Number of molecules of salt = ?

Solution:

First find number of moles of salt

Formula used

Molarity = moles of solute / L of solution

Rearrange the above equation

moles of solute = Molarity x L of Solution

Put values in above equation

moles of solute = 0.003 x 27 L

moles of solute = 0.081 moles

Now we can find the number of molecules of salt

Formula used to find no. of molecules

no. of moles = no. of molecules / Avogadro's number

Avogadro's number = 6.23 x 10²³

Now rearrange the above equation

no. of molecules = no. of moles x Avogadro's number . . . . . . . (1)

Put values in Equation 1

no. of molecules = 0.081 moles x 6.23 x 10²³

no. of molecules = 5.046 x 10²²

So,

no. of molecules of salt = 5.046 x 10²²

6 0

4 years ago

What kind of chemical reaction occurs in a hand-warming product that is worn inside gloves? Explain your answer.

ch4aika [34]

Answer:

exothermic

Explanation:

Disposable hand warmers turn up the heat in your mittens by means of an exothermic reaction that, in essence, just creates rust.

5 0

3 years ago

What is the solubility of 618 grams of zinc chloride (ZnCl2) dissolved into 150 cm3 of water?

Lynna [10]

Answer:

D. 4120 g/dm3

Explanation:

Given:

Mass of Zn = 618 g

Mass of water = 150 cm3

To determine:

Solubility of the given amount of Zn in water

Calculation:

Solubility is the amount of a substance that can be dissolved in a given volume.

Unit conversion:

1 cm3 = 0.001 dm3

Therefore, 150 cm3 of water is equivalent to:

$\frac{150 cm3*0.001dm3}{1cm3}=0.15dm3$

$Solubility = \frac{618g}{0.15dm3}=4120g/dm3$

6 0

4 years ago

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