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
pav-90 [236]
3 years ago
11

Can someone answer these will give brainliest

Chemistry
1 answer:
sukhopar [10]3 years ago
6 0

Answer:

acid base --

Explanation:

i dont thimk im that smart lol sorry

You might be interested in
Which of the following would a chemist be most likely to study?
qaws [65]
B. because the other options are different sciences (biology and entomology)
5 0
3 years ago
Solid aluminum and gaseous oxygen react in a combination reaction to produce aluminum oxide: 4Al (s) + 3O2 (g) → 2Al2O3 (s) In
jek_recluse [69]

Answer: The percent yield of the reaction is 74 %

Explanation:

To calculate the number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}      .....(1)

\text{Moles of aluminium}=\frac{2.5g}{27g/mol}=0.092mol

For oxygen gas:

\text{Moles of oxygen gas}=\frac{2.5g}{32g/mol}=0.078mol

The chemical equation for the reaction of titanium and chlorine gas follows:

4Al(s)+3O_2(g)\rightarrow 2Al_2O_3(s)

By Stoichiometry of the reaction:

4 moles of aluminium reacts with 3 moles of oxygen.

So, 0.092 moles of aluminium reacts with = \frac{3}{4}\times 0.092=0.069mol of oxygen

As, given amount of oxygen is more than the required amount. So, it is considered as an excess reagent.

Thus, aluminium is considered as a limiting reagent because it limits the formation of product.

By Stoichiometry of the reaction:

4 moles of aluminium produce = 2 moles of Al_2O_3

So, 0.092 moles of aluminium will produce = \frac{2}{4}\times 0.092=0.046moles of Al_2O_3

Now, calculating the mass of aluminium oxide:

\text{Mass of aluminium oxide}=moles\times {\text {molar mas}}=0.046mol\times 102g/mol=4.7g

To calculate the percentage yield of titanium (IV) chloride, we use the equation:

\%\text{ yield}=\frac{\text{Experimental yield}}{\text{Theoretical yield}}\times 100

Experimental yield  = 3.5 g

Theoretical yield = 4.7 g

Putting values in above equation, we get:

\%\text{ yield of reaction}=\frac{3.5g}{4.7g}\times 100\\\\\% \text{yield of reaction}=74\%

Hence, the percent yield of the reaction is 74 %

6 0
3 years ago
I need help with this, Please help.
LUCKY_DIMON [66]

Answer:

b

Explanation:

5 0
3 years ago
Read 2 more answers
HELP PLZZZZ ASAP im so desperate to get this done my course is due in 2 days and im sick so if you can help plz plz plz do if i
Gemiola [76]

It can be done by you only

  • First observe the figure or model .
  • Then note the observations about its molecular structures .
  • Then write it uses and why it is commercial most usable.

3 0
3 years ago
In a reaction process a company expected to make 6.8
svetlana [45]

Answer:

1) 61.8%

Explanation:

(4.2/6.8)*100

3 0
3 years ago
Other questions:
  • What kind of weather does a cold front usually bring? A. Warm c. Sunny b. Stormy d. Windy Please select the best answer from the
    8·1 answer
  • What is the term for an unsaturated hydrocarbon with at least one double carbon-carbon bond?
    12·2 answers
  • Arrange the events to describe how an earthquake happens.
    9·2 answers
  • Calculate the equilibrium concentration of hc2o4− in a 0.20 m solution of oxalic acid.
    12·1 answer
  • 3 Consider the reaction :
    8·1 answer
  • TruE or faults the size of. The population increases if the number of individuals. Attend to population is equal to the number o
    15·1 answer
  • How has overpopulation changed the rule about recycling and use of resources
    6·2 answers
  • Write balanced equations for the reaction of each of the following carboxylic acids with NaOH. Part A formic acid Express your a
    13·1 answer
  • Which of the following describes an organisms habitat?
    13·2 answers
  • Determine the limiting reactant in each of the following reactions:
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!