1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alex Ar [27]
4 years ago
8

Josh is making homemade lollipops. the recipe calls for dissolving 400 g sugar in 100 g of water. his friend, alex, said that wo

uld never work because sugar's solubility is 204 g per 100 g of water at 20°c. despite alex's doubts, josh successfully dissolves all 400 g of the sugar. what did josh do that allowed him to dissolve that much sugar in only 100 g of water? josh used sugar cubes instead of granulated sugar. josh used a pan with a large surface area. josh stirred the solution. josh heated the water.
Chemistry
2 answers:
myrzilka [38]4 years ago
7 0
D.) josh heated the water
Juli2301 [7.4K]4 years ago
3 0

The correct answer is "josh heated the water."

The solubility of sugar is 204 g per 100 g of water only at 20°C. The solubility of sugar increases with increase in temperature. At high temperatures the kinetic energy of water molecule increases which can now effectively break apart the sugar molecules that are held together by intermolecular forces of attraction.

Thus 400 g of the sugar will dissolve in water at a temperature higher than  20°C.

You might be interested in
using the equation you wrote determine how many moles of butane c4h10 are needed to react with 5.5 moles of oxygen
GaryK [48]

Answer:

0.846 moles.

Explanation:

  • This is a stichiometric problem.
  • The balanced equation of complete combustion of butane is:

C₄H₁₀ + 6.5 O₂ → 4 CO₂ + 5 H₂O

  • It is clear from the stichiometry of the balanced equation that complete combustion of 1.0 mole of butane needs 6.5 moles of O₂ to produce 4 moles of CO₂ and 5 moles of H₂O.

<u><em>Using cross multiplication:</em></u>

  • 1.0 mole of C₄H₁₀ reacts with → 6.5 moles of O₂
  • ??? moles of C₄H₁₀ are needed to react with → 5.5 moles of O₂
  • The number of moles of C₄H₁₀ that are needed to react with 5.5 moles of O₂ = (1.0 x 5.5 moles of O₂) / (6.5 moles of O₂) = 0.846 moles.
3 0
3 years ago
Draw the curved arrow mechanism for the conversion of aniline into benzenediazonium ion, and draw the final product that forms a
kogti [31]
Below Mechanism shows the mechanism of formation of diazonium ion. Aniline is treated with Nitrosonium ion which is generated in situ by the reaction of Sodium nitrile and strong acid. The resulting <span>benzenediazonium ion on reaction with CuBr yields Bromobenzene and on treatment with CuCN gives Benzonitrile. Mechanism is as folow,</span>

3 0
3 years ago
Draw the most stable lewis structure of acrolein.
NeX [460]
See image below for the lewis structure of acrolein

3 0
3 years ago
Read 2 more answers
PLEASE HELP ME<br><br> what would be the mass of 9.03 x 1021 molecules of hydrobromic acid (HBr)?
Nikitich [7]

We know 1 mole of any atom or molecules contains 6.033 \times 10^{23} atom or molecules.

1 mole of HBr i.e 81 gm/mol contains  6.033 \times 10^{23} atom or molecules.

So, mass of 9.03\times 10^{21} molecules is :

m=\dfrac{81\times 9.03\times 10^{21} }{6.033 \times 10^{23}}\\\\m= 1.21\ gm

Therefore, mass of  9.03\times 10^{21} molecules is 1.21 gm .

Hence, this is the required solution.

7 0
3 years ago
Draw an ecosystem with 10 biotic and 5 abiotic factor
kkurt [141]
I won’t draw it but I can give you 10 Biotic and 5 abiotic
Abiotic: soil, rocks, water, wind, sunlight
Biotic: deer, flower, fish, grass, tree, hawk, human, frog, mouse, worm
8 0
3 years ago
Other questions:
  • Question 22 Write the empirical formula for at least four ionic compounds that could be formed from the following ions:
    10·1 answer
  • If 294 grams of FeS2 is allowed ti react with 176 grams of O2 according to the following equation how many grams of Fe2O3 are pr
    11·2 answers
  • The seawater of Puget Sound off the coast of Oregon has a salinity of about 24 PPT. What weight of salt is there in 1,000g of se
    12·1 answer
  • Charles's law describes the relationship of the volume and temperature of
    6·1 answer
  • What is the approximate volume of 19g of fluorine gas at a pressure of 4.0 atmospheres and a temperature of 127o C?
    7·1 answer
  • What is hydroponics
    5·1 answer
  • If a gas in a closed container is pressurized from 14.9 atm to 16.5 atm and its original temperature was 33.1 °C, what would the
    7·1 answer
  • Which mineral is used in batteries
    15·1 answer
  • What is the hydronium ion concentration of a solution whose pH is 4.12?
    11·1 answer
  • What most likely happens when water vapor cools?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!