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
Neporo4naja [7]
2 years ago
15

Which of the following compounds would have a low

Chemistry
1 answer:
andre [41]2 years ago
6 0
Pretty sure it’s b! mark as brainliest
You might be interested in
How is the pH of an acidic substance raised?
BabaBlast [244]

Answer: 4) Concentrate it

Explanation:

4 0
2 years ago
Calcium oxide reacts with water in a combination reaction to produce calcium hydroxide: CaO (s) + H2O (l) → Ca(OH)2 (s) In a p
dybincka [34]

Answer:

The option closest to the percentage yield is option;

d. 81.1

Explanation:

The given chemical equation of the reaction is presented as follows;

CaO (s) + H₂O (l) → Ca(OH)₂

The mass of CaO in the experiment, m = 2.00 g

The volume of water with which the CaO was reacted = Excess volume of water

Number of moles = Mass/(Molar mass)

The mass of Ca(OH)₂ recovered, actual yield = 2.14 g

The molar mass of CaO = 56.0774 g/mol

The number of moles of CaO in the reaction, n₁ = 2.00 g/(56.0774 g/mol ≈ 0.036 moles

The molar mass of Ca(OH)₂ = 74.093 g/mol

The number of moles of Ca(OH)₂ in the reaction, n₂ = 2.14 g/(74.093 g/mol) ≈ 0.029 moles

From the given chemical reaction, one mole of CaO reacts with one mole of H₂O to produce one mole of Ca(OH)₂

Therefore, 0.036 moles of CaO will produce 0.036 moles of Ca(OH)₂

Mass = Number of moles × Molar mass

The mass of 0.036 moles of Ca(OH)₂ ≈ 0.036 moles × 74.093 g/mol = 2.667348 grams

∴ The theoretical yield of Ca(OH)₂ = 2.667348 grams

Percentage \ yield = \dfrac{Actual \ yield}{Theoretical \ yield}  \times 100 \%

The percentage yield = (2.14 g)/(2.667348 grams) × 100 = 80.23%

Therefore, the option which is closest is option d. 81.1.

5 0
3 years ago
Why does C-14 decay but not N-14?
Effectus [21]

Beta decay occurs when a neutron transforms into a proton, an electron(and an electron anti-neutrino) Even though there are less electrostatically-repelling protons in C 14 than in N 14 the extra neutrons make the nucleus less stable than that of N 14

3 0
3 years ago
What type of adaptation does seaweed have that allows it to survive and grow in underwater environments?
ElenaW [278]
Life cycle difference I think
6 0
3 years ago
Read 2 more answers
How many protons, neutrons, and electrons are there in an atom of potassium-39?
Kamila [148]

Answer:

19 protons, 20 neutrons and 18 electrons. i think

Explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • In the lab, you mix two solutions (each originally at the same temperature) and the temperature of the resulting solution decrea
    12·1 answer
  • How are elements arranged in the Periodic Table?
    8·2 answers
  • How many total orbitals are within the 3s 3p, and 3d sublevels of the third
    13·2 answers
  • An unknown compound displays singlets at δ 2.1 ppm and 2.56 ppm in the ratio of 3:2. what is the structure of the compound?
    14·1 answer
  • The following thermochemical equation is for the reaction of nitrogen(g) with oxygen(g) to form nitrogen dioxide(g). N2(g) + 2O2
    7·1 answer
  • Is flammability a form of chemical change or physical change
    14·2 answers
  • What wave has the longer wavelength
    7·1 answer
  • What information is needed to determine the velocity of an elevator?
    15·1 answer
  • Help asap for brainlist
    9·1 answer
  • What type of bonds are shown in this diagram?
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!