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
Feliz [49]
2 years ago
11

Pls halp. i give brainliest to 1st correct answer

Chemistry
1 answer:
Kruka [31]2 years ago
4 0

Answer:

C is correct

Explanation: Heat describes the transfer of thermal energy between molecules within a system and is measured in Joules. Heat measures how energy moves or flows. ... Temperature describes the average kinetic energy of molecules within a material or system and is measured in Celsius (°C), Kelvin(K), Fahrenheit (°F), or Rankine (R)

You might be interested in
HELP ME ON THIS
diamong [38]

Answer:

The attractive force between them decreases

Explanation:

This is because they become localised.

7 0
2 years ago
A certain gas is present in a 13.0 l cylinder at 4.0 atm pressure. if the pressure is increased to 8.0 atm , the volume of the g
ella [17]
<span>Boyle's Law is k = PV so Initial k = 13.0 L x 4.0 atm = 52 L atm Final kf = 6.5 L x 8 atm = 52 L atm The gas obeys Boyle's Law The answer with two significant figures separated by a comma is k = 52, kf = 52.</span>
5 0
3 years ago
Read 2 more answers
The reaction nacl(s) → nacl(aq) is performed in a coffee cup calorimeter, using 100 ml of h2o(l) and 5.00g of nacl. if the tempe
MrRissso [65]

Since the density of water is 1 g /mL, hence there is 100 g of H2O. So total mass is:

m = 100 g + 5 g = 105 g

 

=> The heat of reaction can be calculated using the formula:

δhrxn = m C ΔT

where m is mass, C is heap capacity and ΔT is change in temperature = negative since there is a decrease

 

δhrxn = 105 g * 4.18 J/g°C * (-2.30°C)

δhrxn = -1,009.47 J

 

=> However this is still in units of J, so calculate the number of moles of NaCl.

 

moles NaCl = 5 g / (58.44 g / mol)

moles NaCl = 0.0856 mol

 

=> So the heat of reaction per mole is:

δhrxn = -1,009.47 J / 0.0856 mol

δhrxn = -11,798.69 J/mol = -11.8 kJ/mol

5 0
3 years ago
Choose all the answers that apply.
Rashid [163]
B:Creates energy through fusion reactions
7 0
3 years ago
Read 2 more answers
.
sweet-ann [11.9K]

Answer:lmk when u have the answer

Explanation:

6 0
2 years ago
Other questions:
  • Boston, MA and Barcelona, Spain have very similar latitudes (they are both a similar distance from the equator.) Why is the clim
    8·1 answer
  • A horizontal tube carrying hot water has a surface temperature of 355.4 K and an outside diameter
    12·1 answer
  • How does the octet rule allow you to predict the charge an ion will have?
    5·1 answer
  • What mass of benzene takes<br> up<br> 325 mL if its density is<br> 0.874 g/mL?
    9·1 answer
  • AgNO2+Na3PO4<br><br> Solve and predict if its a precipitate
    9·1 answer
  • In order to listen to the radio you need to use ______________ and _________ waves.
    6·2 answers
  • Which tool gives scientists information about the wind speed and humidity of a region?
    15·1 answer
  • The sun sum of protons and neutrons in the nucleus of an atom.
    7·1 answer
  • 3. Name the property on which floating and sinking of a body depends.​
    12·1 answer
  • Please help, I’ll mark your answer as brainliest
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!