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
lesantik [10]
3 years ago
8

a 49.2 g sample of solid iron was heated from 16.2c to 58.9c.what ws the energy change?solve for q(heat energy).iron has a speci

fic heat value of .4494
Chemistry
1 answer:
svet-max [94.6K]3 years ago
5 0

Answer:

944.12 J

Explanation:

To solve for the energy change we use the equation Q=mc(Delta)t

Let's identify the variables we have:

m (mass) = 49.2 g

c (specific heat) = .4494

delta t (change in temp.) = final - initial = 58.9-16.2 = 42.7 degrees Celsius

Q= (49.2)(.4494)(42.7)

  = 944.12 J

You might be interested in
Calculate the de broglie wavelength of a subatomic particle that is moving at 351 km/s if its mass is 9.11 à 10â31 kg. λ = hmuh
gregori [183]

The de Broglie wavelength of a subatomic particle is 2.09 nm.

 λ = h m v = h

momentum : wherein 'h' is the Plank's steady. This equation pertaining to the momentum of a particle with its wavelength is de Broglie equation and the wavelength calculated the use of this relation is de Broglie wavelength.

Frequency is the ratio of velocity and wavelength in relation to hurry. In evaluation, wavelength refers back to the ratio of velocity and frequency.

Wavelength is the gap between the crests of waves or a person's fashionable mind-set. An instance of wavelength is the gap between the crest of two waves. An instance of wavelength is while you and some other character share the equal standard attitude and might for that reason speak properly.

calculation is given in the image below

de Broglie wavelength λ = h/mv

                                          = (6.626 * 10^-34)/9.1 * 10^-31 *351 *10^3

                                          = 2.07 *10^-9

                                 Hence, = 2.op nm    

Learn more about de Broglie wavelength here:-brainly.com/question/16595523

#SPJ4

6 0
2 years ago
How could you distinguish octane from 1-octene by a simple<br> chemical test?
lara [203]

卂几丂山乇尺

As the name indicate that in 1-octene there is a double bond on the first position in the eight carbon atoms chain THUS to detect its presence, we use bromine water test;

Add bromine water to the test tube containing octane/octene if the brown colour of bromine water disappears then octene is present.

3 0
3 years ago
Read 2 more answers
Why don't satellites in orbit fly into space?
Alex787 [66]
This is a question similar to one wrestled with by Newton himself, who didn't understand why the planets didn't fall into each other. The reason satellites don't fly into space is because they are being pulled towards the planet by the planet's gravity. 
<span />
7 0
3 years ago
Write the balanced neutralization reaction that occurs between h2so4 and koh in aqueous solution. Phases are optional.
Nutka1998 [239]

Answer:

The answer to your question is below

Explanation:

H₂SO₄ = sulphuric acid

KOH = potassium hydroxide

This is a neutralization reaction

                       H₂SO₄   +  2 KOH   ⇒     K₂SO₄   +  2H₂O

                                 2 -----------   K  ----------- 2

                                 1 -----------   S  ----------  1

                                 4 ----------   H  ---------   4

                                6 ------------   O ----------  6

4 0
3 years ago
if you are asked to help the laboratory assistant in separating the mixture which method will you see?​
FromTheMoon [43]

Answer:

use secondary data. the normal method to use

3 0
3 years ago
Other questions:
  • At 66.0 ∘c , what is the maximum value of the reaction quotient, q, needed to produce a non-negative e value for the reaction so
    15·1 answer
  • Simple Chem question - help!
    12·1 answer
  • Solid metals are good conductors of heat and_______
    6·1 answer
  • How and why theories change and how this contributes to continues and ongoing nature of science
    8·1 answer
  • The numbers of protons in a neutral atom will be equal to the number of-
    14·2 answers
  • Crystal violet standard solutions were prepared and their absorbance at a certain wavelength was measured using a spectrophotome
    9·1 answer
  • An atom has the following electron configuration 1s2 2s2 2p6 3s2 3p4 . How many valence electrons does this Atom have
    10·1 answer
  • Which of these correctly labels the parts of a bone from outside to inside?
    8·2 answers
  • The mineral content of rocks helps to
    13·1 answer
  • Name gaseous element in period 2 group 16?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!