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
slava [35]
3 years ago
5

Express the following quantity in scientific notation. The answer needs to have the correct number of significant figures. 21,30

0,000 mL
Chemistry
2 answers:
melisa1 [442]3 years ago
4 0
2.13 x 10 E 7 i believe this is correct
erastova [34]3 years ago
3 0

Explanation:

In a scientific notation, numbers are written in decimal and are multiplied by 10 to the respective power.

A scientific notation helps to convert a number into decimal number.

For example, we can convert the number 21,300,000 mL into scientific notation as follows.

      Scientific notation of 21,300,000 mL = 2.13 \times 10^{7} mL

You might be interested in
How many grams of chlorine gas are present in a 150. liter cylinder of chlorine held at a pressure of 1.00 atm and 0. °C? Group
OlgaM077 [116]

Answer:

474 grams of chlorine gas are present in a 150 liter cylinder of chlorine held at a pressure of 1.00 atm and 0 °C

Explanation:

An ideal gas is a theoretical gas that is considered to be composed of randomly moving point particles that do not interact with each other. Gases in general are ideal when they are at high temperatures and low pressures.

The pressure, P, the temperature, T, and the volume, V, of an ideal gas, are related by a simple formula called the ideal gas law:  

P*V = n*R*T

where P is the gas pressure, V is the volume that occupies, T is its temperature, R is the ideal gas constant, and n is the number of moles of the gas.

In this case:

  • P= 1.00 atm
  • V= 150 L
  • n= ?
  • R= 0.082 \frac{atm*L}{mol*K}
  • T= 0 C= 273 K

Replacing:

1.00 atm* 150 L= n*0.08206 \frac{atm*L}{mol*K} *273 K

Solving:

n=\frac{1.00 atm* 150 L}{0.08206 \frac{atm*L}{mol*K}*273 K}

n= 6.69 moles

Being Cl= 35.45 g/mole, the molar mass of chlorine gas is:

Cl₂=2*35.45 g/mole= 70.9 g/mole

So if 1 mole has 70.9 grams, 6.69 moles of the gas, how much mass does it have?

mass=\frac{6.69 moles*70.9 grams}{1 mole}

mass= 474.321 grams ≅ 474 grams

<u><em>474 grams of chlorine gas are present in a 150 liter cylinder of chlorine held at a pressure of 1.00 atm and 0 °C</em></u>

4 0
3 years ago
The genetic material of all organisms;made up of two twisted strands in a double helix
viva [34]
Hello!

The genetic material of all organisms which is made up of two twisted strands in a double helix is called DNA (DeoxyriboNucleic Acid)

DNA 
is the basis of all genetic information. It contains all instructions for the development and functioning of all living organisms and some viruses. The main function of DNA is the long-term storage of information to build other cell components like Proteins and RNA. It is composed of two strands with 4 possible bases which are Adenine (A), Thymine (T), Cytosine (C) and Guanine (G).

Have a nice day!
7 0
3 years ago
The molar solubility of pbi2 is 1.5 103 m.
Vsevolod [243]

Answer: -

Concentration of PbI₂ = 1.5 x 10⁻³ M

PbI₂ dissociates in water as

PbI₂ ⇄ Pb²⁺ + 2 I⁻

So PbI₂ releases two times the amount of I⁻ as it's own concentration when saturated.

Thus the molar concentration of iodide ion in a saturated PbI₂ solution = [ I⁻] =

= 1.5 x 10⁻³ x 2 M

= 3 x 10⁻³ M

PbI₂ releases the same amount of Pb²⁺ as it's own concentration when saturated.

[Pb²⁺] = 1.5 x 10⁻³ M

So solubility product for PbI₂

Ksp = [Pb²⁺] x [ I⁻]²

=1.5 x 10⁻³ x (3 x 10⁻³)²

= 4.5 x 10⁻⁹

8 0
3 years ago
(QUICK PLEASE!)
Digiron [165]

Answer:

It pushes back with equal force.

Explanation:

This is pretty much newton's first law.

4 0
3 years ago
What are fossils? *​
Katarina [22]

Answer:

mark me as the brainliest

Explanation:

Fossils are the preserved remains, or traces of remains, of ancient organisms. Fossils are not the remains of the organism itself! They are rocks. A fossil can preserve an entire organism or just part of one. Bones, shells, feathers, and leaves can all become fossils.

8 0
3 years ago
Read 2 more answers
Other questions:
  • If the oxidation number of an atom decreases, the atom has undergone oxidation.
    13·1 answer
  • A. What will the sun turn into when it runs out of fuel for fusion? (5 points)
    13·2 answers
  • What type of bonding is found in the molecule HBr?
    10·1 answer
  • How many grams are in 4 moles of aluminum phosphate
    9·2 answers
  • What volume of oxygen gas at 20°C and 0.919 atm is
    6·1 answer
  • Two compounds are standing at the same temperature. Compound "A" is evaporating more slowly than compound "
    12·2 answers
  • Something that causes a response in an organism is called a(n) _____.
    14·1 answer
  • 1.20×10−8s to nanoseconds
    15·1 answer
  • 2C4H10+ 13O2→ 8CO2+ 10H2O
    6·1 answer
  • Pls help i need help with science what is the name of all satruns moons?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!