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
Scilla [17]
3 years ago
15

When a substance gains or loses energy, it’s _____ changes, or its _____ chafes. Theses two changes do ___happen at the time ; t

he temperature remains ___until the change of ____is complete.
Chemistry
1 answer:
Veseljchak [2.6K]3 years ago
3 0

Answer:

When a substance gains or loses energy, its <u>temperature</u> or <u>state</u> changes. These two changes do <u>not</u> happen with respect to time; the temperature remains <u>the same</u> until the change of <u>state</u> is complete.

Explanation:

This statement is about energy and change of the state of the matter. By gaining or losing energy, the physical state of the matter can change into one another. Melting, freezing, condensation, evaporation, sublimation, and deposition are the processes that support to change the physical state of the matter. Change in state and change in the matter do not happen at the same time. A substance gains or loses energy to reach a specific temperature and remains constant until the physical change of matter is completed.

You might be interested in
A sample of gas is placed into an enclosed cylinder and fitted with a movable piston. Calculate the work (in joules) done by the
Nuetrik [128]

Explanation:

here is the answer. Feel free to ask for more chem help

6 0
3 years ago
Gaseous methane (CH4) reacts with gaseous oxygen gas (O2) to produce gaseous carbon dioxide (CO2) and gaseous water (H2O) . If 0
UkoKoshka [18]

Answer: The percent yield of water is 84.72 %

Explanation:

To calculate the number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}      .....(1)

For methane:

Given mass of methane= 0.16 g

Molar mass of methane = 16 g/mol

Putting values in equation 1, we get:

\text{Moles of methane}=\frac{0.16g}{16g/mol}=0.01mol

For oxygen gas:

Given mass of oxygen gas = 0.25 g

Molar mass of oxygen gas = 32 g/mol

Putting values in equation 1, we get:

\text{Moles of oxygen gas}=\frac{0.25g}{32g/mol}=0.008mol

The chemical equation for the reaction is

CH_4+2O_2\rightarrow CO_2+2H_2O

By Stoichiometry of the reaction:

2 moles of oxygen gas reacts with 1 mole of methane

So, 0.008 moles of oxygen gas will react with = \frac{1}{2}\times 0.008=0.004mol of methane

As, given amount of methane is more than the required amount. So, it is considered as an excess reagent.

Thus, oxygen gas is considered as a limiting reagent because it limits the formation of product.

By Stoichiometry of the reaction:

2 moles of oxygen gas produces = 2 moles of water

So, 0.008 moles of oxygen gas will produce = \frac{2}{2}\times 0.008=0.008moles of water

Mass of water=moles\times {\text{Molar Mass}}=0.008\times 18=0.144g

To calculate the percentage yield of titanium (IV) chloride, we use the equation:

\%\text{ yield}=\frac{\text{Experimental yield}}{\text{Theoretical yield}}\times 100

Experimental yield of water = 0.122

Theoretical yield of water = 0.144 g

Putting values in above equation, we get:

\%\text{ yield of water}=\frac{0.122g}{0.144g}\times 100\\\\\% \text{yield of water}=84.72\%

Hence, the percent yield of water is 84.72%.

7 0
3 years ago
Giving brain thing
lana66690 [7]
I’m pretty sure the answer is C
5 0
3 years ago
Please help!!! Whoever answers first or has a good answer will be marked Brainiest Answer
Goshia [24]

Explanation:

Its ok you got this. Grab a calculator, divide the first number by the second number for each problem. And then bam, density.

8 0
3 years ago
Thermal energy can be transformed to do work .<br> true<br> false
anyanavicka [17]

Answer:

FALSE!!! Thermal energy can be transformed to heat.

Explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • Copper has a face-centered cubic unit cell. the density of copper is 8.96 g/cm3. calculate a value for the atomic radius of copp
    9·1 answer
  • Money management becomes more important when you are responsible for paying all your own expenses.
    9·2 answers
  • Read the false statement. There are 18 periods in the periodic table. Which answer choice rewords the false statement so it is t
    5·2 answers
  • Why is computational chemistry important?​
    6·1 answer
  • The energy of a non-covalent interaction is dependent on their range. Organize the following types of non-covalent interactions
    13·1 answer
  • True or false carboxylic acids are weak acids
    12·1 answer
  • How many electrons are in the nucleus of an atom with an atomic number of
    14·1 answer
  • How many moles of Ar atoms are there in 202 L of Ar gas at STP? A) 1.20 x 1024 mol B) 1.11 x 10-1 mol C) 4.52 x 103 mol D) 9.02
    12·2 answers
  • In an experiment, the molar mass of the compound was determined to
    10·1 answer
  • What is the relationship between temperature and pressure pls​
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!