Answer:
cell's
Explanation:
An unknown amount of water
was heated with 3.5 kJ, raising
its temperature from 26°C to
66°C. What was the mass of
the water?
Answer:
20.9grams
Explanation:
Using the formula:
Q = m × c × ∆T
Where;
Q = amount of heat (joules)
m = mass of substance (g)
c = specific heat of water (4.184 J/g°C)
∆T = change in temperature (°C)
According to the provided information;
Q = 3.5kJ = 3.5 × 1000 = 3500J
m = ?
c of water = 4.184 J/g°C
∆T = 66°C - 26°C = 40°C
Using Q = m × c × ∆T
m = Q ÷ (c × ∆T)
m = 3500 ÷ (4.184 × 40)
m = 3500 ÷ 167.36
m = 20.9
mass = 20.9grams
PLS HELP!! 40 POINTS (Absurd or Spam answers will be reported. No copying from other answers.)
Phases of Matter Activity
Now it is your turn to show what you know about phases of matter and thermal energy transfer! Your task is to create a presentation to explain the transformation of a substance as it changes phases. You may choose to write a story or create a comic strip. For your story or comic, you will create a main character and detail the adventure as your character is exposed to thermal energy, causing it to undergo phase changes from a solid, to a liquid, to a gas. You may create your own comic strip using drawings, presentation software, or this comic strip template.
Your presentation must include the following:
title and introduction of your character, including what substance the character is made of
source of thermal energy your character encountered (conduction, convection, and/or radiation)
detailed description and/or diagram of the particle transformation from solid to liquid phase
detailed description and/or diagram of the particle transformation from liquid to gas phase
You may get creative on this activity. If you are unsure if your idea or software for a presentation will work, contact your instructor for assistance. Be sure to review the grading rubric before you begin.
Answer:
lol i know this isnt the best but Your comic strip can be about how when you put smores in a campfire, the smores become burnt that is example of energy transfer because energy is traveling as heat to another object.
Explanation:
Which type of material incorporates a variety of substances to enhance desired properties such as strength and flexibility?
Answer:
its a polymer
Explanation:
Calculate the morality of a 35.4% (by mass) aqueous solution of phosphoric acid (H3PO4). Molar mass of H3PO4 is 98.00g/mol
Answer:
no idea with the answer pls check with otherr
The blue colour of the sky results from the scattering of sunlight by air molecules. Blue light has a frequency if about 7.5*10^14Hz
Calculate the energy of a mole of photon associated with this frequency
Answer: The energy of a mole of photon associated with this frequency is [tex]49.5\times 10^{-20}J[/tex]
Explanation:
The energy and frequency are related by :
[tex]E=N\times h\times \nu[/tex]
E = energy of photon
N = number of moles = 1
h = planks constant = [tex]6.6\times 10^{-34}Js[/tex]
[tex]\nu[/tex] = frequency = [tex]7.5\times 10^{14}Hz[/tex]
[tex]E=1\times 6.6\times 10^{-34}Js\times 7.5\times 10^{14}s^{-1}=49.5\times 10^{-20}J[/tex]
The energy of a mole of photon associated with this frequency is [tex]49.5\times 10^{-20}J[/tex]