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
Simora [160]
3 years ago
15

After reviewing your answers to questions 2 and 4 above, would you define boiling point and melting point as a periodic table fa

mily trend (vertical groups), period trend (horizontal rows), or neither? Explain your answer.
Chemistry
1 answer:
Andru [333]3 years ago
8 0
The periodic table<span>, and its respective </span>melting<span> and </span>boiling points<span>. ... </span>Chemistry.2<span> The student </span>will <span>investigate and understand that the placement of elements ... </span>Families/groups<span> ... As </span>you<span> analyze </span>your <span>graph, try to </span>answer<span> the </span>following questions<span>: ... </span>period<span>. How </span>would you describe<span> the </span>trend<span> in </span>boiling point<span> as the atomic number ...</span>
You might be interested in
What is a meteorite?
yawa3891 [41]

Answer:

I think its C

Explanation:

6 0
3 years ago
NH4NO3, whose heat of solution is 25.7 kJ/mol, is one substance that can be used in cold pack. If the goal is to decrease the te
makvit [3.9K]

Answer:

There are necessaries 35,2g of NH₄NO₃ per 100,0g of water to decrease the temperature of the solution from 25,0°C to 5,0°C

Explanation:

To decrease the temperature of the solution there are necessaries:

4,184J/g°C×(5,0°C-25,0°C)×(100,0g+X) = -Y

8368J + 83,68J/gX = Y <em>(1)</em>

Where x are grams of NH₄NO₃ you need to add and Y is the energy that you need to decrease the heat.

Also, the energy Y will be:

Y = 25700J/mol×\frac{1mol}{80,043g}X

Y = 321J/g X <em>(2)</em>

Replacing (2) in (1)

8368J + 83,68J/g X = 321J/g X

8363J = 237,32J/gX

<em>X = 35,2g</em>

<em />

Thus, there are necessaries 35,2g of NH₄NO₃ per 100,0g of water to decrease the temperature of the solution from 25,0°C to 5,0°C

I hope it helps!

6 0
3 years ago
Which of these compounds is ionic?<br> A. KF<br> B. CO<br> C. CO2<br> D. SO2
sukhopar [10]
The answer is A) KF. The rest are covalent. 
8 0
3 years ago
Read 2 more answers
Can someone tell me plz :P
NemiM [27]

Answer:

There's nothing there

Explanation:

8 0
3 years ago
During which two processes does a substance release energy?
enyata [817]

Answer:

Freezing and condensation

Explanation:

Because they are exothermic, they release energy

6 0
3 years ago
Other questions:
  • The energy from nuclear fission is potentially limitless but production is restricted by the limited availability of
    11·1 answer
  • Gold is more dense than water. What does this mean?
    12·1 answer
  • Describe the formation of a sodium ion.
    10·1 answer
  • What type of energy is used to make electrical power from tides
    9·2 answers
  • The fermentation of C6H12O6 will produce carbon dioxide and
    15·1 answer
  • If Hydrochloric Acid and Calcium Carbonate were combined would the reaction that occurs be endothermic or exothermic? Why?
    10·1 answer
  • What are the percent compositions of C and H in C2H2?
    8·1 answer
  • Calcium carbonate, CaCO3(s), the principal compound in limestone, decomposes upon heating to CaO(s) and CO2(g). A sample of CaCO
    10·1 answer
  • Make a claim for why caco3 reacts more vigorously with hcl than with hc2h3o2
    10·1 answer
  • Since vinegar is 5% acetic acid and 95% water, find the mole ratio of acetic acid to water in 100 g of vinegar? Hint: Instead of
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!