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
lara [203]
3 years ago
13

Question 2: Heat (5 points)

Chemistry
1 answer:
Ronch [10]3 years ago
8 0

Answer:

(i) specific heat

(ii) latent heat of vaporization

(iii) latent heat of fusion

Explanation:

i. Q = mcΔT; identify c.

Here, Q is heat, m is the mass, c is the specific heat and ΔT is the change in temperature.

The amount of heat required to raise the temperature of substance of mass 1 kg by 1 degree C is known as the specific heat.  

ii. Q = mLvapor; identify Lvapor

Here, Q is the heat, m is the mass and L is the latent heat of vaporization.

The amount of heat required to convert the 1 kg liquid into 1 kg vapor at constant temperature.  

iii. Q = mLfusion; identify Lfusion

Here, Q is the heat, m is the mass and L is the latent heat of fusion.  

Here, Q is the heat, m is the mass and L is the latent heat of vaporization.

The amount of heat required to convert the 1 kg solid  into 1 kg liquid at constant temperature.  

You might be interested in
Sub-atomic particles like negatively charged electrons, positively charged
leonid [27]

Answer:

neutral

Explanation:

There are three basic subatomic particles. These are;

  1. Protons (positively charged)
  2. Electrons (negatively charged)
  3. Neutrons (neutral)

A neutron has no charge unlike the proton and the electron. It is present in the nucleus and contributes to the mass of the atom.

8 0
2 years ago
Describe the number of signals and their splitting in the 1H NMR spectrum of (CH3)2CHOCH3.
yanalaym [24]

Answer:

d. 3 signals: a singlet, a doublet, and a septet

Explanation:

In this case, we can start with the structure of (CH_3)_2CHOCH_3 . When we draw the molecule we will obtain <u>2-methoxypropane</u> (see figure 1).

In 2-methoxypropane we will have three signals. The signal for the CH_3  groups in the left, the CH  and the CH_3  in the right. Lets analyse each one:

-) CH_3  in the right

In this carbon, we dont have any hydrogen as neighbors. Therfore we will have <u>singlet</u> signal in this carbon.

-) CH

In this case, we have 6 hydrogen neighbors ( the two methyl groups in the left). So, if we follow the <u>n + 1 rule</u> (where n is the amount of hydrogen neighbors):

multiplicity~=~n+1~=~6~+~1~=~7

For this carbon we will have a <u>septet</u>.

-) CH_3  in the left

In this case we have only 1 hydrogen neighbor (the hydrogen in CH ). So, if we use the n+1 rule we will have:

multiplicity~=~n+1~=~1~+~1~=~2

We will have a doublet

With all this in mind the answer would be:  

<u>d. 3 signals: a singlet, a doublet, and a septet </u>

<u />

See figure 2 to further explanations

4 0
3 years ago
Ok this is so weird but like how do you expose fake friends for talking about you? I know they did it but i dont know how to tal
murzikaleks [220]

Answer:

just do it

Explanation:

8 0
3 years ago
Read 2 more answers
What derived unit is usually used to express the density of liquids
vovikov84 [41]
Grams per milliliter is the most common unit.
7 0
2 years ago
5. Mr. Martin's Spanish class is 45 minutes long. If it starts at 3:30, what time does it end?
zubka84 [21]
It would be 4:15 . Just add 3:30 plus 45 too get the answer
5 0
2 years ago
Read 2 more answers
Other questions:
  • A scientist is studying a compound that includes nitrogen, carbon, oxygen, and hydrogen. Is the scientist studying an organic mo
    6·2 answers
  • Fill in blanks plz help 23 points
    5·1 answer
  • Suppose the amu had been defined as 110th of the mass of a phosphorus atom. What would be the relative mass of carbon-12?
    7·1 answer
  • A bird building a nest for its young is a reproductive strategy. Based on this example, what do you think the term “reproductive
    6·2 answers
  • The density of water is about 1.0 g/mL at room temperature. Briefly explain how the density of an aqueous solution at room tempe
    5·1 answer
  • What is the definition of an Isomer?
    12·2 answers
  • How many hydrogen molecules are in h2
    13·1 answer
  • Given the reaction:
    15·1 answer
  • A compound has an empirical formula of CH 0 and a molecular mass of 180 g. What is the compound's
    5·1 answer
  • a balloon containing 1,000L of gas at 50. C and 760 mmHg rises to an altitude where the pressure is 380mmHg and the temperature
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!