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
Darya [45]
3 years ago
6

How much heat is needed to raise the temperature of 50.0 g of water from 4.5 ⁰C to 83.0 ⁰C?

Chemistry
1 answer:
Alex_Xolod [135]3 years ago
6 0

The heat  needed to raise the temperature of 50.0 g of water from 4.5 ⁰C

to   83.0 ⁰C is 16.46KJ

<u>Explanation:</u>

<u>To solve the problem,</u>

<u>we need the value of the water and its given by,</u>

C=4.18 × J/ g  ∘ C

To increase the temperature we need  m grams of water by n ∘ C

And the formula for the heat is given by, heat= m × n ×specific

heat

<u>q = m ⋅ c . Δ T</u>

where q denotes the heat absorbed

m denotes the mass sample

c denotes the specific heat

Δ T denotes the change in the temperature

Based on the data it is written as,

q= 50.0 g . 4.18  J /  g  ∘ C  (83.0-4.5) ∘ C

Simplifying the equation we get,

<u>q=16406.5 J</u>

Express it in the form of significant figure

16406.5 J . 1 KJ / 10^ 3 J

Solving the equation we get

<u>16.46KJ</u>

The heat  needed to raise the temperature of 50.0 g of water from 4.5 ⁰C

to   83.0 ⁰C is 16.46 KJ

<u />

<u />

<u />

You might be interested in
Explain what happens to energy and matter during a chemical reaction.
AlekseyPX
According to law of conservation of matter and energy, amount of both of them will remain same

4 0
3 years ago
1a) consider the mixed aldol condensation reaction of 1-methylcyclopentane-1-carbaldehyde (shown below) and 3,3-dimethyl-2-butan
zubka84 [21]
Aldehydes and ketones having α-hydrogen atoms, undergoes aldol condensation, in present of base (NaOH). 

The initial product formed during this reaction is β-hydroxy alcohol, which then undergoes dehydration to form α,β-unsaturated aldehyde or ketone.

In present case, 3,3-dimethyl-2-butanone  has 2α-hyrogen atom, while methylcyclopentane-1-carbaldehyde has 1α-hydrogen atom. So the major product formed during cross aldol condensation reaction of these reactants is:
 5-hydroxy-4,4-dimethly-1-(2-methylcyclopentyl)pent-1-en-3-one. 

The complete reaction product formed is shown below. 

7 0
4 years ago
Read 2 more answers
¿Como pasar 254 meses a minutos?<br> Por favor ayudaaa!! <br> Le doy corona a la respuesta
Dimas [21]

Answer:

Ver las respuestas abajo.

Explanation:

Este problema se puede resolver conociendo la relacion entre horas y minutos, sabemos que:

1 hora [h] → 60 minutos [min]

De esta manera:

2 [min] = 2/60 = 0.033 [h]

15 [min] = 15/60 = 0.25 [h]

30 [min] = 30/60 = 0.5 [h]

10 [min] = 10/60 = 0.166 [h]

6 [min] = 6/60 = 0.1 [h]

20 [min] = 20/60 = 0.33 [h]

5 [min] = 5/60 = 0.0833 [h]

7 0
3 years ago
Which two factors affect the amount of thermal energy an object has?
Neporo4naja [7]

Answer:

Explanation:

What would the answer be?

6 0
3 years ago
224/88Ra+4/2He+? find the missing isotope
andre [41]
Do u have a picture if so post it please
8 0
3 years ago
Other questions:
  • Chandra wants to know how many moles are contained in 150.0g CCl4 what quantity of CCl4 should she use to make this conversion
    6·2 answers
  • What are the answers to these questions?
    12·1 answer
  • Each of the following substrates can react with a nucleophile in a substitution reaction. Select the substrate that cannot under
    13·1 answer
  • True or false: scientists make observations very carefully<br> science
    14·2 answers
  • In a eukaryotic cell, in which structure are proteins made?
    6·2 answers
  • What is another name for the acid dissociation constant? rate constant mole fraction equilibrium constant ionization constan?
    6·2 answers
  • Mr. Watson's students brought him a cake on his birthday because he was their favorite teacher. Before he blew out the candles,
    14·2 answers
  • When ice is melting, the heat being added causes:
    9·2 answers
  • Can someone figure this out for me thank you
    5·1 answer
  • Predict the effect of an eightfold pressure increase on the equilibriunm composition of the reaction 3 Nalg) + H21g) =2 NaHlg)​
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!