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
salantis [7]
3 years ago
8

I NEED HELP PLEASE!!

Chemistry
1 answer:
VikaD [51]3 years ago
5 0

Answer:

The amount of heat absorbed is <u>5.183889 kJ</u>  .

Explanation:

In conversion of water to ice it rejects some heat while in conversion of ice to water it absorbs heat which is called latent heat which is given as 6.02 kJ/mol.

The amount of ice given is 15.5 g.

Converting it to moles as the latent heat is given in per moles:

\frac{given\\weight \\ (in\\grams)}{molecular\\weight\\(in\\grams)}

Molecular mass of Hydrogen (H) and Oxygen (O) is 1 u and 16 u respectively.

Molecular mass of water is 18 g ( H_{2} O ⇒  2*1+16=18 ).

mole = 15.5/18 ≈ 0.8611 moles

Therefore the amount of heat absorbed by 15.5 g of ice ( 0.8611 moles) = <em>Latent heat * moles </em>

Heat absorbed = 6.02*0.8611

             = 6.02*(15.5/18)

             ≈  5.183889 kJ

You might be interested in
1. Chemical equilibrium is established when the number of reactants equals the number of products.. . - True. - False. . 2. Acco
torisob [31]
<span>1)false a in chemical equilibrium concentration of reactant is equal to concentration of product
 2)as here they said heat is added in product side means its endothermic reaction and in endothermic reaction on increasing temp. equilibrium shift towards forward direction so its true
 3) B)as here mole are equal in reactant and product side that is 2 and if we increase pressure equilibrium shift in dat direction where no. of moles are less and here mole are equal so it will remain unaffected</span>
7 0
3 years ago
Read 2 more answers
What do calcium chloride, sodium carbonate, calcium carbonate, and potassium carbonate all have in common? (other than they reac
VARVARA [1.3K]

Answer:

the all dissolve in water

Explanation:

7 0
3 years ago
Read 2 more answers
Which groups on the periodic table contain metalloids?
nasty-shy [4]
C. Groups 13-16 contain metalloids.

If you look on a periodic table, these usually have a different color.
3 0
3 years ago
Read 2 more answers
HELP PLEASEEEEE KAJAMAAKAOAAJAKAKJSMALASJSSJKSSKSJSMKSLWWMSMSKLSSLSKSMMSMSKSKSOSKSSMMSMSKSKSSKMSMSMSMSKSMMSNSSMMSMSMSMSMSKSKSLSL
wariber [46]

Answer:

the cirle of life

Explanation:

i am smart

8 0
2 years ago
How much 6.0 m hno3 is needed to neutralize 39ml of 2 m koh
Sever21 [200]

Answer:

13mL

Explanation:

Step 1:

The balanced equation for the reaction. This is given below:

HNO3 + KOH —> KNO3 + H2O

From the balanced equation above, we obtained the following data:

Mole ratio of the acid (nA) = 1

Mole ratio of the base (nB) = 1

Step 2:

Data obtained from the question.

This includes the following:

Molarity of the acid (Ma) = 6M

Volume of the acid (Va) =?

Volume of the base (Vb) = 39mL

Molarity of the base (Mb) = 2M

Step 3:

Determination of the volume of the acid.

Using the equation:

MaVa/MbVb = nA/nB, the volume of the acid can be obtained as follow:

MaVa/MbVb = nA/nB

6 x Va / 2 x 39 = 1/1

Cross multiply to express in linear form

6 x Va = 2 x 39

Divide both side by 6

Va = (2 x 39)/6

Va = 13mL

Therefore, the volume of the acid (HNO3) needed for the reaction is 13mL

5 0
3 years ago
Other questions:
  • Harriet has an itch in her throat, and she begins to cough. she reaches for a cup of water to drink. which action is carried out
    8·1 answer
  • Melting water is an example of a physical change because (3 points)
    15·1 answer
  • Can swords shatter from cold temperatures
    13·1 answer
  • which two human body system function together to distribute oxygen for use in cellular process throughout the body
    9·1 answer
  • Which of the following is a synthesis reaction? AgNO3 + NaCl → AgCl + NaNO3 BaO + H2O → Ba(OH)2 SO3 + H2O → H2SO4 Cu + AgNO3 → A
    14·2 answers
  • The state of matter in which molecules are attracted to each other but can change position is a
    12·1 answer
  • Please help it’s a test due in five minutes! I’ll give 10 points
    6·1 answer
  • Explain the flexibility and the flow characteristics of water​
    15·1 answer
  • NEED HELP ASAP!!!! PLEASE ANSWER THESE QUESTIONS FOR 25+ POINTS AND A BRAINLIEST, KEEP IN MIND THESE QUESTIONS ARE VERY IMPORTAN
    15·1 answer
  • What is mean by saturated solution and unsaturated solution​
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!