a meter is defined as 100. cm. How many significant digits are there in the value

Answers

Answer 1

Answer:

3 significant figure

Explanation:

Trailing zeros in a number are significant ONLY is the number contains a decimal point.

So if it was 100cm with out the decimal point would only have 1 significant figure.


Related Questions

How do molecules work?

Answers

A molecule is essentially created by a collection of atoms linked by a network of bonds.

what substance changes directly solid to gas
3 examples​

Answers

Answer:

Air FreshenersSpecialized PrintersMoth Balls

                       

The process in which solids directly change to gases is known as sublimation. This occurs when solids absorb enough energy to completely overcome the forces of attraction between them. Dry ice is an example of solids that undergo sublimation.

Please answer!!
No links.
Picture is included!

Answers

Answer:

c

Explanation:

If there is a name/surname you can't make out due to a speaker's manner of speech, what are you supposed to do?

Answers

We can call a person by the word gentleman and Sir or from his/her real name.

If there is a name/surname you can't make out due to a speaker's manner of speech then I will call him gentleman or Sir or I will ask him his real name. Gentleman is a word that is used for noble person and Sir word is also used in order to give someone respect.

Call a person with his real name is also comes under the manner of speech so we can conclude that we can call a person by the word gentleman and Sir or from his/her real name.

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In lab a student is asked to mix solutions of copper (II) sulfate and potassium phosphate. The
student wants to produce exactly 3.75 grams of precipitate. Based on the desired outcome
determine the volume of 1.25M copper (Il) sulfate and 0.75 M potassium phosphate required.

Answers

I believe the volume would turn out to be 2.35M but i could be wrong

A team of scientists is conducting tests to measure the boiling point of a liquid using a thermometer in the liquid. The team is
then recording the temperature where the liquid changes from a liquid to a gas rapidly. After 100 trials, the results are 5 degrees
below the expected results. Which next step is most reasonable? (1 point)

O checking the calibration of the thermometer to ensure that it is giving accurate readings
O assuming that the new results are incorrect
O assuming that the previous measurements are incorrect
O checking the insulation of the apparatus to find out if heat is escaping

Answers

The most reasonable step to take will be to check the calibration of the

thermometer to ensure that it is giving accurate readings.

Experiments which are done to be give the same results under standard

conditions. Common causes of incorrect results during the analysis of

boiling point of substances include heating the substance too rapidly or

the thermometer not being properly calibrated.

The thermometer is used to measure the temperature and so must be

properly calibrated to give accurate readings.

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NEED HELP ASAP WILL GIVE BRAINLIEST

Answers

Answer:

First we know that the molar mass of CO2 is 44.01g/mol, and that the sample of CO2 contains 3.408 x 10^21 molecules, and we have to find the mass of that sample.

We know that moles = mass/molar mass, if we rearrange the equation for mass, we'll get:

mass = moles x molar mass

Also, note that the number of atoms/molecules in a sample is the moles of the sample x Avogadro's number (6.02 x 10^23)

If we rearrange the equation for moles, we would get:

moles = molecules of sample/6.02 x 10^23

Plug in the values for the equation above to get the moles:

moles = (3.408 x 10^21)/(6.02 x 10^23)

moles = 0.00566112956 (we're not done yet)

Now that we have the moles and we were already provided the molar mass, we can calculate the mass using the very first equation we rearranged.

mass = moles x molar mass

mass = 0.00566112956 x 44.01

mass = 0.2491g (answered 4 places past the decimal point)

Therefore the sample of Carbon Dioxide has a mass of 0.2491g

Octane has a density of 0.703 g/ml. Calculate the mass of CO2(g) produced by burning one
gallon of octane. There are 3.79 liters to one gallon.

Answers

The mass of CO₂ gas produced during the combustion of one gallon of octane is 8.21 kg.

The given parameters:

Density of the octane, ρ = 0.703 g/mlVolume of octane, v = 3.79 liters

The mass of the octane burnt is calculated as follows;

[tex]m = \rho V\\\\m = 0.703 \ \frac{g}{ml} \times 3.79 \ L \ \frac{1000 \ ml}{L} \\\\m = 2,664.37 \ g[/tex]

The combustion reaction of octane is given as;

[tex]2C_8H_{18} + \ 25O_2 \ --> \ 16CO_2 \ + \ 18H_2O[/tex]

From the reaction above:

228.46 g of octane -------------------> 704 g of  CO₂ gas

2,664.37 of octane --------------------> ? of CO₂ gas

[tex]= \frac{2,664.37 \times 704}{228.46} \\\\= 8,210.3 \ g\\\\= 8.21 \ kg[/tex]

Thus, the mass of CO₂ gas produced during the combustion of one gallon of octane is 8.21 kg.

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A solution that contains 3 grams of solute dissolved in 100 millimeters of solution is:
a) 3% m / m
b) 3% m / v
c) 10% m / v

Answers

Answer:

the answer is correct part another is a part

Explanation:

c part

A candle is placed between a concave mirror and its focal point.
Which two of the following best describe the image?
O A. Enlarged
B. Virtual
C. Reduced
D. Real

Answers

Virtual and enlarged..............

What grade are you in btw ?

describe an experiment that would show that intramolecular forces (attractions between atoms within molecules) are stronger than intermolecular forces (attractions between molecules).

Answers

Answer:

Molecules don’t have to collide with each other in order to experience intermolecular forces.

Molecules with permanent dipoles, held in fixed orientation, such as water molecules in the solid state (ice), interact with a potential proportional to the inverse cube of distance. This intermolecular force always exists, no matter how far apart the molecules are; every water molecule interacts with every other water molecule. However, because it diminishes rapidly with distance, it tends to only be important at short distances. (In contrast, the potential between two ions goes as 1/r, and that between an ion and a dipole goes as 1/r^2.)

The van der Waals forces, of which London dispersion forces are the most important, are described by a potential proportional to the inverse sixth power of distance. Theoretically, those forces are always operating between any two atoms or molecules, but again, only become important at short distances.

Explanation:

hope this helps

How do ionic and molecular compounds behave in water?

Answers

Ionic compounds dissolve in water by a process called dissociation. Water molecules separate the cations and ions by means of ion-dipole attractions to form hydrated ions.

Answer:

When ionic compounds dissolve in water they go through a process called dissociation, splitting into the ions that make them up. However, when you place covalent compounds in water, they typically do not dissolve but form a layer on top of the water.

why brain remembers picture better than words?​

Answers

Answer:

your brain processes ever detail in a picture rather than words for for example a picture of something words doesn't describe it as well as the picture could.

humans respond and process images way better then text. 60,000 times faster. our brains are just wired that way and pictures are coded more easily and can be retrieved symbolic mode , while the dual coding process using is more difficult for both ways retrieval and processing

WILL BRAINLIST! NEED ANSWER!

• Why is it important to recycle metals?

A. to maintain sustainability
B. to create more tailings
C. to make sure ore remains renewable
D. to make it easier to extract ore from the ground

Answers

It’s C

Recycling metal is considered an environmentally friendly practice since it eliminates the demand for raw (ore) metal and conserves valuable natural resources

OOO OOO
Water's strong hydrogen bonds result in which physical properties? Check all that apply.
high boiling point
low boiling point
high specific heat
low specific heat
density of ice being less than that of liquid water
density of ice being greater than that of liquid water

Answers

Water has a low boiling point and density of ice is less than of liquid water

need answer asap ..
-20 points! asap please ..

Answers

Answer:

[tex][tex]\purple{\rule{45pt}{7pt}}\purple{\rule{45pt}{999999pt}}[tex][/tex]

Explanation:

[tex][tex]\purple{\rule{45pt}{7pt}}\purple{\rule{45pt}{999999pt}}[tex][/tex]

Which phenomena does wind cause?

A)tides and waves

B)deep currents and tides

C)waves and surface currents

D)surface currents and deep currents

HELP PLEASE ILL GIVE OUT BRAINLIEST

Answers

A) tides and waves.

The phenomena which  wind causes  are waves and surface currents.

What are surface  currents?

Surface currents are caused by  winds  which blow over the ocean water and result in creation of waves. Surface currents  are horizontal streams of water which are capable of  flowing thousands of kilometers and can reach great depths.

Surface currents play a major role in determining the climate all over the world. They are influenced by three major factors 1) overall global wind patterns 2)rotation of earth 3)shape of ocean basins . When a surface  current collides with the land it  changes the direction of currents.

Because of surface currents the global climate has warmer water  from equator to the cooler parts of the ocean  as they transfer heat energy.

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1 point
Convert 3.79 x 10^24 atoms of sodium to grams.

Answers

Answer:

is easy to poiling

Explanation:

also is dificult to melting

How many atoms are AI(OH)3 ?​

Answers

Answer:

It has a total of three elements and seven atoms. Another use that aluminum hydroxide has is it treats the symptoms of too much stomach acid. Some examples of what it treats are: upset stomach, heartburn, and acid indigestion.

Explanation:

Atomicity is the no of atoms present in one molecule. Atomicity of Al(OH)3 = 7.

the size of camphor kept in store house gradually decrease in size after few а days? ​

Answers

Answer:

Because it goes through the process of sublimation.

Explanation:

Gold has a specific heat of 0.126 J/g.C. Copper has a specific heat of 0.386 J/g C. Which of the two metals would require more
heat energy to raise the temperature of the same weight of metal by 10.5C?

Answers

Answer:

The copper, because its specific heat is higher, meaning it takes more heat (Joules) per gram to raise the temperature 1 degree Celsius.

Explanation:

Which condition is usually associated with low air pressure systems?

Answers

Answer:

clouds and precipitation that minimize temperature changes throughout the day

Explanation:

What is the molarity of the nitric acid solution if 20.5 mL of a 0.125 M lithium hydroxide solution are needed to titrate a 25.0 mL sample of the nitric acid solution

Answers

Answer:: We're asked to find the molar concentration of the NaCl solution given some titration data.

Explanation:

If the vapor pressure of water at 20.0 o C is 17.535 torr, and the atmospheric pressure measured by a barometer was 757.3 torr, what is the partial pressure of H2 in the gas mixture in a buret

Answers

Answer:

f the vapor pressure of water at 20.0 o C is 17.535 torr, and the atmospheric pressure measured by a barometer was 757.3 torr, what is the partial pressure of H2 in the gas mixture

Partial pressure of H2 in gas mixture is :

739.765 torr .

Explain total pressure?The overall pressure ptot is the total of all pressures in a reference system. This pressure, according to Bernoulli (see Fluid mechanics), consists of the static pressure p, the dynamic pressure pdyn, and the geodetic component ( g z) that exists in a fluid along a stream line in a frictionless flow.The total pressure of a gas mixture is the sum of its component gases' partial pressures: Ptot = ∑Pi = P1 + P2 + P3... ntot = total number of moles in the gas mixture (the sum of all ni).

Total  pressure of mixture =

Partial of hydrogen + Partial pressure of oxygen

Partial of Hydrogen = Total pressure - partial   pressure  of  oxygen

Here total pressure = 757.3 torr

Partial pressure of oxygen = 17 . 535 torr

Total pressure = 757 . 3 - 17 . 533

                        = 739.765 torr.

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Which law states that energy cannot be created or destroyed, but can change from one form to another?


- the law of conservation of energy
- the law of conservation of matter
- the law of gravity
- the law of motion


answer - (the law of conservation of energy)

Answers

Answer:

the law of conservation of energy

Explain why the first ionisation energy of beryllium is higher than the first ionisation
energy of lithium.

Answers

Answer:

since the distance between the electron and the nucleus is smaller in B than in Li, the electrostatic nuclear force of attraction experienced by B is higher than the one experienced by Li...this translates to the higher first ionization energy in B than in Li.

Explanation:

i hope it's helping!

How many molecules are there in an ideal gas with a volume of 7.27 L at STP?
number of molecules:

Answers

Answer:

n = 0.324 mol

Explanation:

PV = nRT

STP:

273.15K and 101.325kPa

n = PV/RT

n = (101.325kPa)(7.27L)/(8.314 L kPa/mol K)(273.15K)

n = 0.3243693408 mol

n = 0.324 mol

Hope that helps

Predict the decay process and write the nuclear equation of Cf- 255

Answers

Answer:

curium

243

,

252

/

99

Es,  

251

/

98

Cf,  

214

/

82

Pb

Explanation: Im not very good with this but here ya go!

How many moles of CH, are present in a 13982.87 gram sample of CHg?

Answers

Moles= mass/molar mass
=13982.87/(12+1)
= 1,075.605384615385 moles

Which of these challenges is unique to the process of designing prostheses as opposed to engineering other technologies?

- Knowing how a material will fail
- Using the engineering process
- Identifying a need for the technology
- Predicting how a technology will interact with human tissue

Answers

Answer:

predicting how a tech will interact with human tissue.

Explanation:

thats not really common except for in the medical field.

The challenge that is unique to the process of designing prostheses as opposed to engineering other technologies is Predicting how a technology will interact with human tissue. The correct option is option 4.

What is Prosthetic Design?

Prosthesis design is typically undertaken by shaping wax on a plaster replica of the patient's anatomy. Realism is predominantly achieved through the prosthetist's ability to interpret the correct location and physically recreate the anatomical shape and detail.

Prosthetic applications are an example of the intersection of design, technology and science.

Therefore, The challenge that is unique to the process of designing prostheses as opposed to engineering other technologies is Predicting how a technology will interact with human tissue. The correct option is option 4.

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Which answer shows the correct solution for 6x + 19x - 4 = 5(5x + 4)?No solution Infinitely many One solution List 3 powers Congress has. Simplify:(2/d^2)^3Please help :) Shauna wants to use facts from a government website in her speech. Which element is she adding to her speech?A. background InformationB. narrativeC. evidenceD. commentaryE. theme responsible for the overall performance of an organization or one of itsmajor self-contained subunits or divisions.*General ManagerFunctional Manager Front-line Manager He was a library of information about baseball HELP PLEASE I REALLY NEED IT I love yall so literally heres 100 points Reducir la mala nutricin de los adultos mayores, informacin de Cmo lo podemos hacer? A car is traveling at 55km/hr and has a mass of 1200 kg. What is the momentum of the car?Thank you for whoever solves this, I will make sure to add brainliest if possible Bill wanted to know how many times students at his middle school go to the beach each week during the summer. He surveyed every other middle school student at the mall last Saturday. After analyzing the data collected, Bill determined that the average student from his middle school goes to the beach about 2.4 times a week during the summer. What error did he make in the survey? We _____ to Warsaw next week for a meeting with the advisory board A.will be flying. B.will flow. C.will have been flying. D.would have flowing How many fish are in the aquarium in the restaurant? why was the colonists response stronger in 1774 than it had been in 1765 what part of the brain is responsible for happiness? If Alex is 14 years old, and Ben is 17 years old, in how many years will the sum of their ages be 169 years? Solve for x in the hanger below Describe a vibration that is not periodic. NO LINKS PLEASE Review the steps of summarizing. Use your notes to write a brief summary of the interview of Miep Gies. List the angles of A KLM with verticesK(-2,-2), L(2, 6), M(7, -2) in orderfrom smallest to largest.