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WITCHER [35]
3 years ago
7

What's the definition if blood

Chemistry
1 answer:
ANEK [815]3 years ago
8 0
Blood is a liquid substance flowing through the arteries and veins of the body. In a healthy normal person, approximately 45% of their blood volume are cells (mostly red blood cells, white blood cells and platelets).

hope this helps!
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Unit for mass, volume and density
Kazeer [188]
The mass of water is expressed in grams (g) or kilograms (kg), and the volume is measured in liters (L), cubic centimeters (cm3), or milliliters (mL). Density is calculated by the dividing the mass by the volume, so that density is measured as units of mass/volume, often g/mL.
5 0
4 years ago
Read 2 more answers
How can i find nuclear charge and overall charge while only knowing the atomic mumber, number of protons and electrons?​
Mazyrski [523]

Explanation:

An atom is made up of:

  • Protons which are the positively charged particles
  • Electrons are negatively charged
  • Neutrons carry no charges.

Atomic number is the number of protons in an atom.

To find the nuclear charge:

    We use the effective nuclear charge formula:

   Effective nuclear charge = Atomic number - number of shielding electrons(non-valence electrons)

The shielding electrons are the non-valence electrons in the inner orbitals.

For example:

  Ne:

          atomic number = 10

          Effective nuclear charge = 10 - (2) = 8+

   Number of non-valence electrons is 2

The effective nuclear charge is 8+

Overall charge:

        Charge = number of protons - number of electrons

  For neutral atoms, the overall charge is zero as the number of protons and electrons are the same.

 

Learn more:

Effective nuclear charge brainly.com/question/5441986

#learnwithBrainly

7 0
3 years ago
The compound potassium sulfide is a strong electrolyte. Write the transformation that occurs when solid potassium sulfide dissol
Alex17521 [72]

Answer:

K₂S(s) → 2K⁺(aq) + S²⁻(aq)

Explanation:

A strong electrolyte is a compound that, in solution, dissociates completely. For a compound XₐYₙ that dissolves in water:

XₐYₙ(s) → aXⁿ⁺(aq) + nYᵃ⁻(aq)

Now, potassium sulfide (K₂S), as a strong electrolyte dissolves in water thus:

<em>K₂S(s) → 2K⁺(aq) + S²⁻(aq)</em>

<em></em>

I hope it helps!

3 0
3 years ago
A 50°C solution has a pH of 3.30. At this temperature, Kw = 5.48 x 10 9. What is the pOH of the solution?
sammy [17]

Answer:

9.93

Explanation:

Your value for Kw is incorrect. The correct value is 5.48 × 10^-14.

  pH + pOH = pKw

3.30 + pOH = -log(5.84 × 10^-14) = 13.23

          pOH = 13.23 - 3.30 = 9.93

The pOH of the solution is 9.93.

4 0
3 years ago
Read 2 more answers
True or False<br>Electrons contribute most of the mass of an atom?​
Natali5045456 [20]

Answer:

False

Explanation:

  • Mass of the atom is mostly contributed by nucleus.
  • Nucleus consists of Protons and Neutrons
  • Mass number defined by No of protons+No of neutrons
3 0
3 years ago
Read 2 more answers
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