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
olga2289 [7]
1 year ago
7

29. If a walnut is burned in a

Chemistry
1 answer:
harkovskaia [24]1 year ago
8 0

Energy were released from the walnut, q = 1,673.6 J

<h3>Equation :</h3>

To find the energy using formula,

q = mcΔt

where,

q is charge

m is mass

c is specific heat of water

Δt is change in temperature

So, given

t₁ = 50°C

t₂ = 60°C

m = 40g

c = 4.184 J/g

Now putting the values known,

We get,

q = mc(t₂ - t₁)

q = 40g x 4.184 J/g x  (60 - 50)

q = 167.36 J x 10

q = 1,673.6 J

<h3>What is heat energy?</h3>

Heat is the thermal energy that is transferred when two systems with different surface temperatures come into contact. Heat is denoted by the letters q or Q and is measured in Joules.

To know more about specific heat :

brainly.com/question/11297584

#SPJ9

You might be interested in
What is the temperature when ice Melt
kenny6666 [7]

The temperature when ice melts is 32 degrees Fahrenheit.

6 0
3 years ago
What is the purpose of the stairstep pattern on the periodic table of the elements?
Mamont248 [21]

Answer: The bold staircase in the periodic table allows us to classify which elements are metalloids.

Explanation: Additionally, it acts like a "divider" that allows us to properly distinguish the metals from the non-metals in the periodic table.

                                          Add me as a friend!!!

                                                    (:  O_O :)

7 0
3 years ago
A high speed train travels 176 miles in 7 hours. What is the speed of the train
umka21 [38]

Answer:

25 mph

Explanation:

So we have to find the unit rate, or you could use the DTS triangle, but both say you have to divide, so our equation is:

176 ÷ 7 = 25.14

But I'm going to round that

So the train is traveling at 25 mph

hope this helps:/

4 0
3 years ago
With what elements does nitrogen form ionic bonds?
Andrew [12]

Answer:

Group 1 and 2 elements

Explanation:

Nitrogen, a non-metal will form ionic bonds with most group 1 and group 2 metals on the periodic table.

How does ionic bonds form?

  • They are bonds formed between a highly electronegative specie and one with very low electronegativity.
  • As such, ionic bonds forms between metals and non-metals
  • In this bond type, the metal due to its electropositive nature will transfer electrons to the non-metals for it to gain.
  • The non-metals becomes negatively charged as the metal is positively charged.
  • The electrostatic attraction between the two specie leads to the formation of ionic bonds.

Most metals in group 1 and 2 fits in this description. Some of them are calcium, magnesium, lithium, Barium e.t.c.

It mostly favors group 2 metals.

5 0
3 years ago
What happens as you decrease the temperature of a solution?
ANTONII [103]
A). The number of solute particles increases 

This was answered before on Brainly!
I used it for one of my chemistry courses before as well.

Hope this helps!

3 0
3 years ago
Read 2 more answers
Other questions:
  • "according to the modern theory of the atom, where may an atom’s electrons be found?"
    11·1 answer
  • Which of the following is NOT a true statement about liquids?
    10·1 answer
  • Glucose and fructose are monosaccharides that have the same chemical formula, C6H12O6. However, they do not react the same chemi
    12·1 answer
  • What is the liquid of matter
    15·1 answer
  • PLEASE HELP 50 POINTS!!
    8·1 answer
  • The MOST important biotic factor in this swamp would be the
    12·1 answer
  • Identify the number of elements and the number of atoms present in the chemical formula.
    11·1 answer
  • What do carnivores do and what is another name for them? PLEASE HELP
    6·2 answers
  • In an Ionic Bond the Metal Gives electrons to the Non-Metals
    15·1 answer
  • a certain drug is made from only two ingredients: compound a and compound b. there are milliliters of compound a used for every
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!