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
Vanyuwa [196]
3 years ago
5

Heat energy can be produced in many ways. Which of the following sources can produce heat energy? A. the Sun B. electricity C. b

urning wood D. all of these
Chemistry
2 answers:
Thepotemich [5.8K]3 years ago
6 0
Hi there:)

The answer to your question is D. all of these.

Hope this helps  :)

~ TRUE BOSS
WINSTONCH [101]3 years ago
4 0

The answer is D. all of these

You might be interested in
I've asked before and gotten spammed hopefully I won't get spammed this time please help me with this someone.​ pls help anyonw
elena55 [62]

Answer:

See below!

Explanation:

A.  The picture of the graph is attached.  You can tell the amount of protons in an element by looking at the periodic table.  The elements are ordered by the number of protons in an element.

B.  Carbon and silicon are at the peaks of the chart.  The peak is the highest point in a graph.

C.  The elements belong to the non-metal group.

D.  The halogens are non-metals, and their vapors are colorless.

The halogens are toxic to humans.

Halogen molecules are made of two atoms; they are diatomic.

Halogens react with non-metals to form crystalline compounds that are salts.

The halogens get less reactive going down the group on the periodic table.

Halogens can bleach vegetable dyes and kill bacteria.

E.  The picture of the table is attached.  To figure which numbers to put where, you need to pay attention to the other numbers.  The halogens follow a trend with each of these properties.  You have to put in the numbers that fit in among the other numbers.

3 0
3 years ago
Which kind of covalent bond has unequal sharing of electrons
lutik1710 [3]

Polar.

Polar bonds have unequal sharing electrons while nonpolar, the opposite, has equal sharing electrons. This is a tactic typically used to determine whether or not a compound or element itself is polar or nonpolar.

Hope this helps!

7 0
2 years ago
Read 2 more answers
3. Determine the moles of sodium, Na, containing 7.9x1024 atoms.​
-BARSIC- [3]

Answer:

12.7mol Na.

Explanation:

Hello there!

In this case, according to the concept of mole, which stands for the amount of substance, we can recall the concept of Avogadro's number whereby we understand that one mole of any substance contains 6.022x10²³ particles, for the given atoms of sodium, we can calculate the moles as shown below:

7.9x10^{23}atoms*\frac{1mol}{6.022x10^{23}atoms} \\\\

Thus, by performing the division we obtain:

12.7molNa

Regards!

8 0
3 years ago
How to balance the equation Mg2+HO2=Cu3O+H2<br><br>​
Mariulka [41]
I think the answer is 2Mg + H2O4 = Cu12O4 + 2H

I’m really not sure though so it might be wrong… I’m not the best at balancing equations lol
6 0
2 years ago
Are the chemical reactions that take place when a battery connected endothermic or exothermic
Vilka [71]

Answer:

The answer is endothermic as the heat flows into the system from the surroundings. The products are at higher energy than the reactants, as they have absorbed energy.

8 0
2 years ago
Other questions:
  • How do the isotopes of an element differ?
    15·1 answer
  • Equation: 3Cu(s) 8HNO3(aq) --&gt; 2NO(g) 3Cu(NO3)2(aq) 4H2O(l) In the above reaction, the element oxidized is ______, the reduci
    15·1 answer
  • Approximate the instantaneous rate of this reaction at time t = 40 s.
    6·1 answer
  • Which of the following is not a layer of the atmosphere? (4 points)
    9·1 answer
  • Diploid cells have:
    7·1 answer
  • What are all the ways that a substance can change state?
    12·2 answers
  • Can someone help, please...?<br><br> I really can't understand this...
    14·1 answer
  • Bernice created a table using her knowledge of charged and uncharged objects. Which statement best explains why the table is inc
    5·2 answers
  • How many grams of water will be produced when 14.9 L of H2 reacts according to the following equation?
    9·1 answer
  • What type of van der Waals interactions occur between molecules
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!