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
Shalnov [3]
3 years ago
8

89.6 of H2O determine the number of moles

Chemistry
1 answer:
Katyanochek1 [597]3 years ago
5 0

Answer:

true ?

can you give me brainiest

You might be interested in
What is PO3 compound name?
OleMash [197]

Answer:

PHOSPHITE ION is the correct answer.

Explanation:

Hope this helped Mark BRAINLIEST!!!

4 0
3 years ago
How is the mass of carbon related to the mole?
Anuta_ua [19.1K]

Answer:

Simply put, you can go from moles to grams and vice versa by using the mass of 1 mole of that substance, i.e its molar mass. For example, the molar mass of carbon is 12.011 g/mol. This means that 1 mole of carbon, or 6.022⋅1023 atoms of carbon, weigh 12.011 g.

Explanation:

4 0
4 years ago
The hydrogen chloride (HCl) molecule has an internuclear separation of 127 pm (picometers). Assume the atomic isotopes that make
natta225 [31]

Answer:

the energy of the third excited rotational state \mathbf{E_3 = 16.041 \ meV}

Explanation:

Given that :

hydrogen chloride (HCl) molecule has an intermolecular separation of 127 pm

Assume the atomic isotopes that make up the molecule are hydrogen-1 (protium) and chlorine-35.

Thus; the reduced mass μ = \dfrac{m_1 \times m_2}{m_1 + m_2}

μ = \dfrac{1 \times 35}{1 + 35}

μ = \dfrac{35}{36}

∵ 1 μ = 1.66 × 10⁻²⁷ kg

μ  = \\ \\ \dfrac{35}{36} \times 1.66 \times 10^{-27} \ \  kg

μ  = 1.6139 × 10⁻²⁷ kg

r_o = 127 \ pm = 127*10^{-12} \ m

The rotational level Energy can be expressed by the equation:

E_J = \dfrac{h^2}{8 \pi^2 I } \times J ( J +1)

where ;

J = 3 ( i.e third excited state)  &

I = \mu r^2_o

E_J= \dfrac{h^2}{8  \pi  \mu r^ 2 \mur_o } \times J ( J +1)

E_3 = \dfrac{(6.63 \times 10^{-34})^2}{8  \times  \pi ^2  \times 1.6139 \times 10^{-27} \times( 127 \times 10^{-12}) ^ 2  } \times 3 ( 3 +1)

E_3= 2.5665 \times 10^{-21} \ J

We know that :

1 J = \dfrac{1}{1.6 \times 10^{-19}}eV

E_3= \dfrac{2.5665 \times 10^{-21} }{1.6 \times 10^{-19}}eV

E_3 = 16.041  \times 10 ^{-3} \ eV

\mathbf{E_3 = 16.041 \ meV}

8 0
3 years ago
What does the symbol ka mean in chemistry?
Dmitry_Shevchenko [17]
 <span>Ka is an equilibrium constant for the partial ionization of "weak" acids in water.</span>
4 0
4 years ago
Read 2 more answers
What should I do if I have a friend who i talk to everyday and I like him but he doesn’t like me?
azamat

Answer:

you never know but manifestation never hurts.

5 0
3 years ago
Read 2 more answers
Other questions:
  • The coefficients in a balanced chemical equation represent
    8·1 answer
  • Write a balanced equation to show the reaction of sulfurous acid with caesium hydroxide to form water and caesium sulfite.
    13·1 answer
  • Which of the following is similar among all living organisms on Earth?
    5·1 answer
  • Which of the following statements about the Sun is true?
    13·1 answer
  • A 25.00 mL flask contains methane (CH4) gas at 22.5°C. The pressure in the flask is 225.2 mmHg. How many moles of methane are in
    15·1 answer
  • Consider the following half reactions and their standard reduction potential values to answer the following questions.
    5·1 answer
  • The chemistry of nitrogen oxides is very versatile. Given the following reactions and their standard enthalpy changes, (1) NO(g)
    5·1 answer
  • Circulatory Quiz - 1 chance
    7·1 answer
  • Imagine that you are in chemistry lab and need to make 1.00 L of a solution with a pH of 2.60.
    7·1 answer
  • AUDIO
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!