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3 years ago

Which substance is most likely to dissolve in greater quantities in cold water

Chemistry

2 answers:

Dvinal [7]3 years ago

8 0

The answer is sugar !!

arsen [322]3 years ago

3 0

Answer:

sugar

Explanation:

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PLEASE HELP, I WILL GIVE BRAINLIEST AND THANKS

jasenka [17]

Answer:

23dm

Explanation:

so you have to do 10g +13dm so the you have to times it by 3 three times

3 0

3 years ago

It takes to break an iodine-iodine single bond. Calculate the maximum wavelength of light for which an iodine-iodine single bond

Zolol [24]

The given question is incomplete. The complete question is :

It takes 151 kJ/mol to break an iodine-iodine single bond. Calculate the maximum wavelength of light for which an iodine-iodine single bond could be broken by absorbing a single photon. Be sure your answer has the correct number of significant digits.

Answer: 793 nm

Explanation:

The relation between energy and wavelength of light is given by Planck's equation, which is:

$E=\frac{hc}{\lambda}$

where,

E = energy of the light = 151 kJ= 151000 J (1kJ=1000J)

N= moles = 1 = $6.023\times 10^{23}$

h = Planck's constant = $6.626\times 10^{-34}Js$

c = speed of light = $3\times 10^8m/s$

$\lambda$ = wavelength of light = ?

Putting in the values:

$151000J=\frac{6.023\times 10^{23}\times 6.626\times 10^{-34}Js\times 3\times 10^8m/s}{\lambda}$

${\lambda}=7.93\times 10^{-7}m=793nm$ $1m=10^{-9}nm$

Thus the maximum wavelength of light for which an iodine-iodine single bond could be broken by absorbing a single photon is 793 nm

3 0

2 years ago

When we say an object is hot, we are describing its velocity thermal energy wavelength chemical energy?

boyakko [2]

I think the correct answer from the choices listed above is the second option. When we say an object is hot, we are describing its thermal energy. It is the energy that comes from heat. This heat is generated by the movement of tiny particles within an object. Hope this answers the question.

3 0

3 years ago

What is the mass in grams of 4.91 moles of ammonium sulfate?

Montano1993 [528]

1 mole is equal to 1 moles Ammonium Sulfate, or 132.13952 grams

4 0

2 years ago

Read 2 more answers

What temperature will the water reach when 10.1 g CaO is dropped into a coffee cup containing 157 g H2O at 18.0°C if the followi

Zepler [3.9K]

Answer:

Final temperature attained by water = 34.6°C

Explanation:

The reaction of CaO and H₂O is an exothermic reaction. The equation of reaction is given below:

CaO + H₂O ----> Ca(OH)₂

The quantity of heat given off, ΔH°rxn = 64.8KJ/mol = 64800J/mol

Number of moles of CaO = mass/molar mass, where molar mass of Ca0 = 56g/mol, mass of CaO = 10.1g

Number of moles of CaO = 10.1g/56g/mol =0.179moles

Quantity of heat given off by 0.179 moles = 64800 *0.179 = 11599.2J/mol

Using the formula, Quantity of heat, q = mass * specific heat capacity * temperature rise.

mass of mixture = (10.1 + 157)g = 167.1g, Initial temperature = 18.0°C

Final temperature(T₂) - Initial temperature(T₁) = Temperature rise

11599.2J/mol = 167.1g * 4.18J/g·°C * ( T₂ - 18.0°C)

11599.2 = 698.478T₂ - 12572.604

11599.2 + 12572.604 = 698.478T₂

698.478T₂ = 24171.804

T₂ = 34.6°C

Therefore, final temperature attained by water = 34.6°C

6 0

3 years ago