All categories

3 years ago

How is 0.00069 written in scientific notation?

Chemistry

2 answers:

s344n2d4d5 [400]3 years ago

7 0

$\boxed{ \ 0.00069 \rightarrow 6.9 \times 10^{-4} \ }$

<h3>Further explanation</h3>

In modern science, we frequently must deal with extremely small or incredibly large quantities. For a typical example, one of the recognized limitations of the microwave frequency is 300,000,000 Hz with a photon energy of 0.00000124 eV. They with many zeros can be impractical to work with, so scientists properly implement scientific notation.

Scientific notation properly represents the precise way scientists handle exceptionally abundant digits or extremely inadequate numbers in the product of a decimal form of number and powers of ten. Put differently, such numbers can be rewritten as a simple number multiplied by 10 raised to a certain exponent or power. It is a system for expressing extremely broad or exceedingly narrow digits compactly.

Scientific notation should be in the form of

$\boxed{ \ a \times 10^n \ }$

where

$\boxed{ \ 1 \leq a \ < 10 \ }$

The number "a" is called "mantissa" and "n" the order of magnitude.

From the key question that is being asked, we face the standard form of 0.00069.

$0.00069 = \frac{69}{100,000}$

The coefficient (or mantissa), i.e. 69, is still outside of 1 ≤ a < 10. Both the numerator and denominator are divided by 10.

$0.00069 = \frac{6.9}{10,000}$

The denominator consists precisely of four zero digits.

Hence, 0,00069 is written in scientific notation as $\boxed{ \ 0.00069 = 6.9 \times 10^{-4} \ }$

The inverse of scientific notation is the standard form. To promptly change scientific notation into standard form, we reverse the process, move the decimal point to the right or left. This expanded form is called the standard form.

Notable examples:

$\boxed{ \ 3.0 \times 10^{8} \ Hz \ \rightarrow 300,000,000 \ Hz \ or \ 300 \ MHz}$

$\boxed{ \ 0.00000124 \ eV \ \rightarrow 1.24 \times 10^{-6} \ eV \ or \ 1.24 \mu\ eV \ }$

<h3>Learn more</h3>

How is 0.00023 written in scientific notation? brainly.com/question/1898080
How to explain 3,482,000,000 in scientific notation brainly.com/question/231855
Convert the number expressed in standard form to scientific notation brainly.com/question/10436883

<h3>Answer details</h3>

Grade: Middle School

Subject: Mathematics

Chapter: Scientific Notation

Keywords: how, 0.00069, written, in scientific notation, expanded form, exponent, base, standard form, mantissa, the order of magnitude, power, decimal, very large, small, figures, abundant digits, inadequate

vfiekz [6]3 years ago

4 0

6.9 x 10^-4 would be .00069 written in scientific notation

You might be interested in

PLEASE HELP QUICK!! WILL MARK BRAINLIEST ANSWER!! When water is diffused across a selectively permeable membrane, scientists ref

xxTIMURxx [149]

Answer :

During diffusion, when the concentration of the molecules on both sides of the membrane is the same, the molecules will continue to move across the membrane in both the direction.

Answer 3 : It allows single-celled organism to reproduce, and other organism to repair damage tissues and grow.

Answer 4: The nucleus is an organelle that is surrounded by the cytoplasm, a jelly-like fluid.

Explanation :

Diffusion : It is a process where liquid moves from higher concentration to the lower concentration through permeable membrane.

When the concentration of the molecules on both sides of the membrane is same and the membrane is permeable membrane then diffusion will occur and the molecules will moves continuously across the membrane in both the direction.

Answer 3 :

Mitosis : It is a process of cell division. In this process, nucleus divides into two daughter cell and each daughter cell contains same number of chromosomes as present in parent nucleus.

The main purpose of the mitosis is to repair damaged tissues and growth.

Answer 4 :

Nucleus is a type of cell organelle. It is present in both animal and plant cells and it is the brain of the cell. It is present only in eukaryotic cell.

Nucleus is an organelle which is surrounded by the cell membrane which protects its from the other cells.

Cytoplasm is a jelly-like fluid which is present in the cell membrane which is made up of salt and water.

7 0

3 years ago

Calculate the pressure (in kpa) of 1.5 mole of helium gas at 354 k when it occupies a volume of 16.5l.

3241004551 [841]

Answer:

267.57 kPa

Explanation:

Ideal gas law:

PV = n RT R = 8.314462 L-kPa/K-mol

P (16.5) = 1.5 (8.314462)(354) P = 267.57 kPa

8 0

2 years ago

What is the result at the end of meiosis II?

VMariaS [17]

Answer:

B.) two diploid cells

6 0

3 years ago

Rose reviews the EPA website and finds a recommendation to use cold tap water for cooking instead of starting with warm water fr

Nezavi [6.7K]

The Environmental Protection Agency suggests using cold tap water for cooking instead of starting with warm tap water is because our drinking water is made out lead pipes, which is a serious risk to health.

Explanation:

Lead is found throughout the environment in lead found in paint, air, soil, food and water.

Lead can pose a significant risk to your health if too much of it enters your body.
Lead enters drinking water primarily as a result of the corrosion.
It also contains in materials containing lead like in the water distribution system and household plumbing.

Lead in drinking rarely cause of lead poisoning can significantly increase a person’s total lead exposure.
In particular the exposure of infants who drink baby formulas and concentrated juices that are mixed with water.
EPA estimates that drinking water can make up to 20% or more of a person’s total exposure to lead which is dangerous.

4 0

3 years ago

A given hydrocarbon is converted completely to carbon dioxide and water, and equal numbers of moles of co2 and h2o are produced.

Sauron [17]

X moles of CO₂, and x moles of H₂O

CxH2x + 3x/2 O₂ -------> xCO₂ + xH₂O

CxH2x or CnH2n ----> ALKENE ( hydrocarbon with double bond)

4 0

4 years ago