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
kondaur [170]
3 years ago
6

A scientist heats an unknown substance in a closed system. The graph shows the change in temperature over time. E D Temperature

C A Time During which period is the substance changing state? A. During the time labeled D, when the temperature stays the same B. During the time labeled E, when the temperature increases for a third time C. During the time labeled C, when the temperature increases ebarnly​
Chemistry
2 answers:
lilavasa [31]3 years ago
7 0

Answer: During The time labeled D, when the temperature stays the same

Explanation: none

Alika [10]3 years ago
6 0

Answer:I said During the time labeled A when the temperature first starts to increase

Explanation:

I will let you know if it’s right

You might be interested in
Which of the following is an example of a Lewis acid?
Agata [3.3K]

Answer:

C. BF3

Explanation:

The boron in BF3 is electron poor and has an empty orbital, so it can accept a pair of electrons, making it a Lewis acid.

4 0
3 years ago
Use the following balanced reaction to solve:
Naily [24]

Answer:  60.7 g of PH_3 will be formed.

Explanation:

To calculate the moles :

\text{Moles of solute}=\frac{\text{given volume}}{\text{Molar volume}}    

\text{Moles of} H_2=\frac{60L}{22.4L}=2.68moles

The balanced chemical reaction is

P_4(s)+6H_2(g)\rightarrow 4PH_3(g)

H_2 is the limiting reagent as it limits the formation of product and P_4 is the excess reagent.

According to stoichiometry :

6 moles of H_2 produce = 4 moles of PH_3

Thus 2.68 moles of H_2 will produce=\frac{4}{6}\times 2.68=1.79moles  of PH_3

Mass of PH_3=moles\times {\text {Molar mass}}=1.79moles\times 33.9g/mol=60.7g

Thus 60.7 g of PH_3 will be formed by reactiong 60 L of hydrogen gas with an excess of P_4

3 0
3 years ago
What happens to the speed of motion of the particles of a gas when a certain volume of the gas is heated at constant pressure? E
Vitek1552 [10]
As the gas is heated, the particles will begin to move faster. Likewise if you start to cool a gas, the particles will move slower. Because the gas remains at a constant pressure and volume, the particles cannot spread out so they simply move around the container even faster.

Hope this helps :)
8 0
3 years ago
Read 2 more answers
Particles of clay and silt eroded and deposited by the wind are called
Ivanshal [37]
The correct answer to your question would be B) Loess, or <span>Aeolian deposits , reasoning to your question is because, loess is a german word but in english means loss or loose. So given that clay and small particles that are not combined together are loose particles. moves freely. Hope this helps you out.

</span>
4 0
4 years ago
Read 2 more answers
How many molecules are in 1 mole of H2O
Olegator [25]

Answer:

A mole (mol) is the amount of a substance that contains 6.02 × 10 23 representative particles of that substance. The mole is the SI unit for the amount of a substance. There are, therefore, 6.02 × 10 23 water molecules in a mole of water molecules. Water (H2O) is made from 2 atoms of hydrogen and 1 atom of oxygen.

8 0
2 years ago
Other questions:
  • Match the term with its description.
    6·1 answer
  • Given the following equation, how many grams of PbCO3 will dissolve when exactly 1.0 L of 1.00 M H+ is added to 6.00 g of PbCO3?
    11·2 answers
  • What solid depends on hydrogen bonds to hold it together?
    8·1 answer
  • Select the correct answer. Which of the following describes a compound? (Hint: Carbon and oxygen both appear on the periodic tab
    11·2 answers
  • Which particle has a negative charge?
    8·2 answers
  • Label the following ph paper color as either strong / weak acid, strong/weak base, or neutral
    13·1 answer
  • Adaptations result from interactions between organisms and their___.
    6·1 answer
  • A 4.50 g sample is analyzed and found to contain 3.22 g of carbon, 0.300 g of hydrogen, 0.221 g of nitrogen, and the rest is oxy
    8·1 answer
  • Please help help ASAP Please help It’s do in a 1 hour What conclusion can you draw about the relationship between physical activ
    8·2 answers
  • Amines are basic functional groups and produce hydroxide in water. Can you write the reaction for butylamine in water
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!