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
Serggg [28]
3 years ago
5

Question 2 Unsaved Which of the following chemical formulas shows a covalent compound? a)CO2 b)MgO c)NaCl d)HBr

Chemistry
2 answers:
zzz [600]3 years ago
6 0
It would be D
Because a covelant compound forms when 2 non metal atoms bond
saw5 [17]3 years ago
5 0

Answer:D

Explanation:

You might be interested in
A dependent variable is
Ivanshal [37]

Answer:

a variable (often denoted by y ) whose value depends on that of another.

Explanation:

a variable (often denoted by y ) whose value depends on that of another.

7 0
3 years ago
Describe in detail what you know about the enthalpy, entropy, and free energy changes when a sample of gas condenses to a liquid
ycow [4]
The keyword here is gas condenses to a liquid, which mean we're talking about condensation process

The enthalpy energy in condensation process is negative because it releases energy
The entropy in general will also decreases .

Temperature affect this change because it will create free energy if added with this result

hope this helps
8 0
3 years ago
Read 2 more answers
The reaction P4 +502P4010 + 712 kcal is
igor_vitrenko [27]

Answer:

The reaction is exothermic (option 4)

Explanation:

P4 + 5O2 → P4O10 + 712 kcal

In chemical reactions heat can be absorbed or released:

⇒in the first case, when heat is absorbed, this is called an endothermic reaction. The products have more energy than the reactants. The reaction requires or absorbs energy from it's surroundings.  That means  that in this reaction energy , in the form of heat, will be absorbed by the reactants.

⇒ when heat is released, this is called an exothermic reaction. The reactants have more energy than the products. The reaction gives or releases energy to it's surroundings.  That means  that in this reaction energy , in the form of heat, will be released by the reactants.

in the case of P4 + 5O2 → P4O10 + 712 kcal

We notice that on the right side, which is the product side, there is a positive amount of energy. This means that the energy is released by the the reactants, in this reaction. <u>The reaction is exothermic.</u>

.

4 0
2 years ago
Read 2 more answers
Click the button that shows the correct relationship of the electron affinities of the elements sodium and phosphorus.
VikaD [51]

Answer:

The second option

Explanation:

I took the quiz and got it correct

3 0
2 years ago
Read 2 more answers
Based on the Valence Shell Electron Pair Repulsion Theory (or VSEPR), molecules will arrange to keep the following as far apart
elena55 [62]

Answer:

B. Valence Electron Pairs

Explanation:

Valence-shell electron-pair repulsion, or VSEPR, describes the shape of molecules by determining the repulsion of valence electrons. Therefore, our answer is B.

6 0
3 years ago
Other questions:
  • Which statement about activation energy is true? a. It is not affected by catalysts. b. It has no effect on the rate of the reac
    11·2 answers
  • What is the difference between a terrestrial planet and a gas giant
    9·1 answer
  • Steel is formed by Group of answer choices oxidizing some of the iron to iron oxides. combining iron, carbon and transition meta
    9·1 answer
  • According to table f which substance is most soluble in water.
    10·1 answer
  • Consider the reaction 2 H 2 + O 2 ⟶ 2 H 2 O Δ H rxn = − 484 kJ Which answer best describes the transfer of heat that occurs when
    8·1 answer
  • When H2 and CO2 react, acetic acid can be formed spontaneously while the production of formaldehyde requires an input of energy.
    12·1 answer
  • When H2SO4 is added to PbI2, a precipitate of PbSO4 forms. The PbSO4 is then filtered from the solution, dried, and weighed. If
    6·1 answer
  • Carbon and hydrogen will bond together to form a molecule which type of bond will they form and how will they form that bond
    13·1 answer
  • The cl-cl bond will react more readily, because it has a
    12·1 answer
  • I + I -----&gt; I2 + 146.3 kJ Is this reaction exothermic or endothermic?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!