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
hammer [34]
4 years ago
8

Help please.........

Chemistry
1 answer:
Inessa05 [86]4 years ago
5 0

Answer:

4625 J

Explanation:

You might be interested in
What does the ozone do for us? As in us humans?
dimulka [17.4K]
The ozone layer protects humans from harmful UV rays, because it acts as a sort of filter for any toxic or overpowering waves from damaging our skin. This goes for animals, as well.
6 0
3 years ago
Read 2 more answers
To neutralize 1.65g LiOH, how much .150 M HCl would be needed
Vinvika [58]
The molecular weight of LiOH would be 23.95 g/mol, so the amount of LiOH in mol would be: 1.64g/(<span>23.95 g/mol)= 0.069 mol

The reaction of LiOH with HCl would be:
</span><span>HCl + LiOH = H2O + LiCl
The coefficient of LiOH:HCL is 1:1 so you need the same amount of HCl to neutralize LiOH.

HCl= LiOH
volume* 0.15M= </span>0.069 mol
volume= 0.069 mol/ (0.15 mol/ 1000ml)
volume= 459.29 ml
4 0
3 years ago
Which two temperatures are equivalent?
S_A_V [24]

Answer:

273 °K annd 0°C are equivalent

3 0
3 years ago
oxygen is a common oxidizing agent in nature. what change in the oxidation number of oxygen must occur if it is to be an oxidizi
Minchanka [31]

Answer is: the oxidation number of oxygen must decrease.

Oxidizing agent is element (substance) that gain electrons in chemical reaction.

For example, balanced chemical reaction: C + O₂ → CO₂.

Oxygen change oxidation number from 0 to oxidation number -2 (reduction) and carbon change from 0 to +4 (oxidation)

6 0
3 years ago
A compound with the empirical formula CH2 has a molar mass of 126g/mol. What is the molecular formula for this compound?
stellarik [79]

Answer: C10H20

Explanation:

C=12

H=1

(12+1)n=126

13n=126

n=126/13

n=10

Molecular formula

C10H20

3 0
3 years ago
Read 2 more answers
Other questions:
  • If a substance can be physically separated into its components, is it a pure substance or a mixture?
    14·2 answers
  • I need help. ASAP! Look at the picture below. (3)
    12·1 answer
  • Explain how the solubility of water is useful in maintaining various life processes.
    15·2 answers
  • How do reactants and products participate in a chemical reaction?
    14·1 answer
  • Automobile air bags use the decomposition of sodium azide as their sources of gas for rapid inflation, represented in the reacti
    15·1 answer
  • Iron is a :<br><br>A. substance<br>B. heterogenous mixture<br>C. homogenous mixture​
    12·1 answer
  • water from a town is suspected to contain chloride ions but not sulphate ions . describe how the presence of the chloride ions i
    9·1 answer
  • What is Metallic bond ?<br> ​
    15·2 answers
  • URGENT PLEASEEEE, WILL GIVE 100 POINTS
    13·2 answers
  • A hypothetical element, E, has two stable isotopes. One isotope has a natural abundance of 68.037% and has an atomic mass of 46.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!