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
algol [13]
3 years ago
7

9

Chemistry
1 answer:
Svetllana [295]3 years ago
5 0

Answer:

0.0025moles

Explanation:

Molarity of a solution (M) = number of moles (n) ÷ volume (V)

According to this question, to make 250 mL of a 0.01 M solution of CaCl, the following number of moles is needed:

Volume = 250mL = 250/1000 = 0.250Litres.

Using; molarity = n/V

0.01 = n/0.250

n = 0.0025

n = 2.5 × 10^-3 moles.

You might be interested in
Which of the following is the correct name for the compound HF?
alexira [117]
Name for the compound HF is Hydrogen fluoride.
Hope this helps!
6 0
4 years ago
Read 2 more answers
A bolt of lightning is an example of static discharge.<br> TRUE<br> FALSE
Maslowich

Answer:

True

Explanation:

6 0
3 years ago
Please help me with this work
Dominik [7]
I don’t know how , what class is it for?
3 0
3 years ago
Why does the surface of the oocyte change when the first sperm cell touches the oocyte?
Anestetic [448]

To prevent more than one sperm from entering the egg.

What is oocyte?

An oocyte , or ovocyte is a female gametocyte or germ cell involved in reproduction. In other words, it is an immature ovum, or egg cell. An oocyte is produced in a female fetus in the ovary during female gametogenesis. The female germ cells produce a primordial germ cell (PGC), which then undergoes mitosis, forming oogonia. During oogenesis, the oogonia become primary oocytes. An oocyte is a form of genetic material that can be collected for cryoconservation.

When the sperm and egg fuse it triggers a release of calcium ions, which cause the cortical granules inside the egg to fuse with the plasma membrane. As they fuse, these granules release their contents outside of the cell, toward the remains of the zona pellucida.

To learn more about gametogenesis click on the link below:

brainly.com/question/1446790

#SPJ4

6 0
2 years ago
The free energy of formation of nitric oxide, NO, at 1000 K (roughly the temperature in an automobile engine during ignition) is
Assoli18 [71]

<u>Answer:</u> The value of K_p for the chemical equation is 8.341\times 10^{-5}

<u>Explanation:</u>

For the given chemical equation:

N_2(g)+O_2(g)\rightarrow 2NO(g)

To calculate the K_p for given value of Gibbs free energy, we use the relation:

\Delta G=-RT\ln K_p

where,

\Delta G = Gibbs free energy = 78 kJ/mol = 78000 J/mol  (Conversion factor: 1kJ = 1000J)

R = Gas constant = 8.314J/K mol

T = temperature = 1000 K

K_p = equilibrium constant in terms of partial pressure = ?

Putting values in above equation, we get:

78000J/mol=-(8.314J/Kmol)\times 1000K\times \ln K_p\\\\Kp=8.341\times 10^{-5}

Hence, the value of K_p for the chemical equation is 8.341\times 10^{-5}

4 0
4 years ago
Other questions:
  • An aqueous magnesium chloride solution is made by dissolving 6.90 moles of MgCl 2 in sufficient water so that the final volume o
    12·1 answer
  • 8. Estimate the maximum volume percent of Methanol vapor that can exist at standard conditions. Vapor pressure = 88.5 mm Hg in a
    10·1 answer
  • Help me plsssssssssssssssssss
    13·2 answers
  • Which statement describes a scientific theory?
    9·2 answers
  • All solutions contain 2 or more compounds. True or False and explain
    7·1 answer
  • Gold has a density of 19.32 g&gt;cm3. A piece of gold foil is 2.50 cm on each side and 0.100 mm thick. How many atoms of gold ar
    14·1 answer
  • Calculate the Ka for the following acid. Determine if it is a strong or weak acid. HClO2(aq) dissolves in aqueous solution to fo
    9·1 answer
  • An isotope contains 26 protons, 24 electrons, and 32 neutrons.
    15·2 answers
  • Acetic acid and water react to from hydronium cation and acetate anion, like this: HCH3CO2 (aq) + H2O (I) → H3O+(aq) + Ch3CO2-(a
    12·1 answer
  • Whats the best red waterproof lipstick? Need some help :)
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!