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
Sladkaya [172]
3 years ago
12

A thermometer with a temperature reading of 22 oC is placed inside a beaker of water. After a few minutes, a student reads the t

hermometer. The thermometer reads 45 oC Describe the direction of heat flow between the thermometer and the water in the beaker.
Chemistry
1 answer:
tatuchka [14]3 years ago
7 0

Answer:

Explanation:

The energy flow in the form of heat is a consequence of a difference in temperatures. When two objects with different temperatures are put in contact, the energy will flow from the object with the highest temperature to the one with the lowest temperature.

In this case, the thermometer first had a temperature of 22ºC. Then it was placed in a beaker of water and it read 45ºC. Therefore, <u>the temperature gained by the thermometer is a consequence of the transmission of heat from the water in the beaker, which was at a higher temperature</u>.

You might be interested in
Which metallic substance would require the least amount of thermal energy to melt?
Len [333]

Answer: C (Aluminum)

Explanation:

Aluminum would require the least amount of thermal energy to melt, because according to the chart, it has the lowest melting point (1218ºF) as compared to the melting points of Gold (1945ºF), Nickel (2646ºF), and Steel (2500ºC).

5 0
3 years ago
Read 2 more answers
Ethanol, CH.0, is common beverage alcohol. At its boiling point of 78.5 °C, the enthalpy of vaporization of ethanol is 38.6 kJ/m
garik1379 [7]

Answer:

209.8 kilo Joules heat is required to vaporize 250 g of ethanol at 78.5 °C.

Explanation:

Mass of an ethanol = 250 g

Molar mass of ethanol = 46 g/mol

Moles of an ethanol = n=\frac{250 g}{46 g/mol}=5.435 mol

Enthalpy of vaporization of ethanol = \Delta H_{vap} =38.6 kJ/mol

Heat required to vaporize 250 g of ethanol at 78.5 °C : Q

Q=n\times \Delta H_{vap}

=5.435 mol\times 38.6 kJ/mol=209.7826 kJ\approx 209.8kJ

Q = 209.8 kilo Joules

6 0
4 years ago
Which term names the underground region between where water saturates pores and where it does not? A. water zone B. water table
Pani-rosa [81]
A)Water Table :)


Enjoy
3 0
3 years ago
Read 2 more answers
How do you write 400000 in scientific notation?
Andrej [43]

Answer:

4 x 10 5

Explanation:

6 0
3 years ago
Read 2 more answers
What do electric forces do​
Oksana_A [137]

Answer:

An electric force is exerted between any two charged objects. Objects with the same charge, both positive and both negative, will repel each other, and objects with opposite charges, one positive and one negative, will attract each other.

Explanation:

3 0
3 years ago
Other questions:
  • The difference between the sum of the masses of the electrons, protons and neutrons of an atom (calculated mass) and the actual
    15·1 answer
  • Which phase would experience a decrease in the rate of dissolution with agitation
    12·1 answer
  • At what temperature (in
    13·2 answers
  • Is a compound a mixture
    10·2 answers
  • Iodine (I2) and (Br2) react in a closed 2.0L container at 150°C to produce iodine monobromide (IBr), according to the following
    14·1 answer
  • What mainly inspired the Europeans to travel the ocean
    11·1 answer
  • What is the voltage for the following cell: Cu(s)| Cu+(aq) || Mg2+(aq) |Mg(s)?
    5·1 answer
  • The knowledge produced by science builds on old ideas and is constantly changing.
    15·1 answer
  • Help pleaseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
    7·2 answers
  • How do you make a experiment for ions​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!