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
MAVERICK [17]
3 years ago
12

Convert 6.42 moles of H2O to molecules

Chemistry
1 answer:
Ivahew [28]3 years ago
4 0

Answer:

3.87 x 10^24

Explanation:

Simply multiply the moles by avogadros number

6.42 moles of H2O x 6.022 x 10^23 molecules/1 mole of H2O = 3.87 x 10^24 molecules of H2O

You might be interested in
A chemist adds 405.0mL of a 0.79M sodium carbonate solution to a reaction flask. Calculate the millimoles of sodium carbonate th
Sophie [7]

Answer:

320 mmol

Explanation:

405.0 mL * 1L/1000 mL = 0.4050 L

0.79 M = 0.79 mol/L

0.79 mol/L * 0.4050 L=0.32 mol

0.32 mol * 10^3 mmol/1 mol = 320 mmol

4 0
3 years ago
What is the charge on an electron?
xxTIMURxx [149]

Answer

1.60217662 × 10-19 coulombs

Explanation:

.

3 0
3 years ago
Read 2 more answers
Copper(II) sulfate forms a bright blue hydrate with the formula CuSO 4 ⋅ n H 2 O ( s ) . If this hydrate is heated to a high eno
Arada [10]

Answer:

The value of n in the hydrate formula is 5 ,CuSO_4.5H_2O.

Explanation:

CuSO_4.nH_2O\rightarrow CuSO_4+nH_2O

Mass of hydrate of copper sulfate = 14.220 g

Moles of hydrate of copper sulfate =\frac{14.220 g}{(159.5+n\times 18) g/mol}

Mass of copper sulfate after heating = 8.9935 g

Moles of copper sulfate = \frac{8.9935 g}{159.5 g/mol}

\frac{14.220 g}{(159.5+n\times 18) g/mol}=\frac{8.9935 g}{159.5 g/mol}

Solving for n, we get:

n = 5

The value of n in the hydrate formula is 5 ,CuSO_4.5H_2O.

5 0
3 years ago
Describe the results of Ernest Rutherford's gold-foil experiment and explain how his results changed ideas about the distributio
sashaice [31]
Physicist Ernest Rutherford<span> established the nuclear theory of the atom with his </span>gold-foil experiment<span>. When he shot a beam of alpha particles at a sheet of </span>gold foil<span>, a few of the particles were deflected. He concluded that a tiny, dense nucleus was causing the deflections.</span>
4 0
3 years ago
Read 2 more answers
I need help PLEASEEEEEEEEEEEEEEE<br> 20 points baes
Kryger [21]

not sure but h = hydrogen and o = oxygen

7 0
3 years ago
Other questions:
  • What is the volume in liters of 3.51kg of ethylene glycol and density of 1.11g/cm^3?
    11·1 answer
  • All of the noble gas elements except neon have 8 electrons in their outermost energy level. True or false
    14·1 answer
  • A chemical equation is shown below. KNO3 → KNO2 + O2 What are the coefficients that should be added to balance this equation? Us
    9·2 answers
  • What type of organic compound contains the following functional group?
    5·1 answer
  • Triangle ABC is reflected over the x-axis when is the coordinate for C?
    9·1 answer
  • Chemistry Problem<br><br>1234567890-
    10·2 answers
  • Fill the 2 letter bellow<br><br>h_gs and k_sses<br>​
    9·1 answer
  • Give reason. When the tip of a plant is cut, it does not grow tall.<br>​
    12·1 answer
  • The molar mass of carbon dioxide is 44.0 g/mol. How many moles of CO2 are present in a 58.4 gram sample of CO2
    10·1 answer
  • 1)
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!