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
RSB [31]
3 years ago
5

Your bedroom gets direct sunlight through a window during the hottest times of the day. you ask your mom to turn down the thermo

stat in the house so your room can cool down. instead, your mom suggests that you put aluminum foil over the window. what will the results be if you take your mom's advice?
a. a room cooled by minimizing heat transfer by reflection b. a room cooled by minimizing heat transfer by radiation c. a room cooled by minimizing heat transfer by convection d. a room cooled by minimizing heat transfer by conduction 10 points... Please help!!!
Chemistry
1 answer:
Kipish [7]3 years ago
5 0

If you take your mom's advice, a. the room will be cooled by minimizing heat transfer by reflection.

The Sun is heating your room by its <em>radiation</em>.

The aluminium foil is shiny, so it reflects the Sun’s radiation back outside the window.

<em>Convection</em> is the transfer of heat caused by the air moving around in your room.

<em>Conduction</em> occurs only when a hot object is in contact with a cooler object.

You might be interested in
When the vapor pressure of a liquid is equal to the atmospheric pressure, the liquid
Dmitrij [34]

Answer:

The liquid will boil.

Explanation:

Boiling will occur when the vapor pressure is equal to the atmospheric pressure. This is called the boiling point. Without any external pressure the liquid molecules will be able to spread out and change from a liquid to a gas.

7 0
2 years ago
Consider the following equilibrium systems: A⇌2B ΔH o =20.0 kJ/mol Reaction 1 A+B⇌C ΔH o =−5.4 kJ/mol Reaction 2 A⇌B ΔH o =0.0 k
galina1969 [7]

Answer:

Reaction 1: Kc increases

Reaction 2: Kc decreases

Reaction 3: The is no change

Explanation:

Let us consider the following reactions:

Reaction 1: A ⇌ 2B ΔH° = 20.0 kJ/mol

Reaction 2: A + B ⇌ C ΔH° = −5.4 kJ/mol

Reaction 3: 2A⇌ B ΔH° = 0.0 kJ/mol

To predict what will happen when the temperature is raised we need to take into account Le Chatelier Principle: when a system at equilibrium suffers a perturbation, it will shift its equilibrium to counteract such perturbation. This means that <em>if the temperature is raised (perturbation), the system will react to lower the temperature.</em>

Reaction 1 is endothermic (ΔH° > 0). If the temperature is raised the system will favor the forward reaction to absorb heat and lower the temperature, thus increasing the value of Kc.

Reaction 2 is exothermic (ΔH° < 0). If the temperature is raised the system will favor the reverse reaction to absorb heat and lower the temperature, thus decreasing the value of Kc.

Reaction 3 is not endothermic nor exothermic (ΔH° = 0) so an increase in the temperature will have no effect on the equilibrium.

8 0
3 years ago
a. What is the definition of a mole? b. What is the abbreviation for mole? SARM c. How many particles are in one mole? d. What n
ycow [4]

Mole is base unit of substance. The number of particles in one mole is equal to 6.022 × 10²³. The number of particle in a mole is called as Avogadro's number.

The mole of substance is the amount of substance that contain elementary particles as the number of atoms. the symbol of mole is mol. it is the SI unit of amount of substance. The number particles are ion one mole of substances is 6.022 × 10²³. The number of particles in one mole of substance is called as Avogadro's number.

Thus, Mole is base unit of substance. The number of particles in one mole is equal to 6.022 × 10²³. The number of particle in a mole is called as Avogadro's number.

To learn more about moles here

brainly.com/question/26416088

#SPJ1

7 0
1 year ago
Oxygen is a __________ and nitrogen is a __________. metalloid, metalloid nonmetal, metal nonmetal, nonmetal nonmetal, metalloid
Anna35 [415]

Answer:

"nonmetal, nonmetal"

Explanation:

Oxygen is a non metal and Nitrogen is a non metal. It is 8th element of the periodic table. It is located in period 2 and group 16.

Nitrogen lies at the group 15 of the periodic table. Its atomic no is 7. Its valency is 2.

Hence, the correct option is (c) "nonmetal, nonmetal".

4 0
2 years ago
Salt is an ionic compount. it​
ElenaW [278]

Answer:

Explanation:

Ionic Compounds Are Balanced

Table salt is an example of an ionic compound. Sodium and chlorine ions come together to form sodium chloride, or NaCl. The sodium atom in this compound loses an electron to become Na+, while the chlorine atom gains an electron to become Cl-

3 0
3 years ago
Other questions:
  • How did Mendeleev feel about Russian science education when he came back from Germany
    7·2 answers
  • Example when materials are prepared as fluids so they can be moved more easily
    6·2 answers
  • How many total atoms in the compound Al3NO2
    11·2 answers
  • Does anyone know how to do common ion effect in chemistry?
    9·1 answer
  • Lens coating are made of A.teflon B.bakelite C.melamine D.PVC
    7·1 answer
  • How many grams of sucrose must be dissolved in 250 ml to prepare the 0.15 mol / L solution?
    9·1 answer
  • Which of the following could be classified as unleavened bread?
    11·2 answers
  • When the process of condensation occurs, the kinetic energy of particles.
    10·1 answer
  • Qeoahefji
    11·1 answer
  • If there was another spot on the TLC plate, what would be that other spot assuming all starting material was consumed? at what s
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!