How many significant figures are in 0.08260 L? 4 5 6

Answers

Answer 1

Answer:

5

Explanation:

Count the digits after the first non zero number, any number after that (even zero) counts.

Hope that helped!!! k

Answer 2

Answer:

[tex]\boxed{4}[/tex]

Explanation:

[tex]\sf Leading \ zeros \ are \ not \ significant.[/tex]

[tex]\sf Trailing \ zeros \ are \ significant.[/tex]

[tex]\sf Non\ zeros \ are \ significant.[/tex]

[tex]0.08260 \sf \ has \ 4 \ significant \ figures.[/tex]


Related Questions

Sulphur dioxide is a common pollutant from burning coal.State two effects caused by this pollutant and also write the chemical equation.

Answers

Heya!

Sulfur dioxide - ( SO2 )

Answer:

Sulfur dioxide is a common pollutant caused due to the burning of coal,Is very harmful for the environment and health.

Effects:

Health effects-Sulfur dioxide effects the respiratory system which includes the functioning of lungs,respiratory track and causes infections,can also effect  and irritate the eyes and causes aggravating conditions such as asthma and chronic bronchitis.As most sulfur dioxide air pollution comes from the burning of coal and oil in power plants. It is a emitted by trains, large ships and other diesel objects that burns alota   sulfur fuel so this also effects the environment like plants and others as the air lacks oxygen ,but with more sulfur dioxide.

Hope this helps!

Have a nice day!:)

The melting points of ionic compounds _____

Answers

Explanation:

ionic compounds have high melting points

Three determinations were made of the following percentage of oxygen in mercuric oxide. The results were 7.40%, 7.43%, and 7.35%. What was the average percentage?

Answers

7.39% Hope that helps! :)

In science class, Jake mixed water with differing amounts of an unknown liquid. After mixing the liquids, he heated 20 milliliters (ml) of each mixture and observed how quickly it boiled. The table shows his results.​

Answers

According to the question,  each mixture decrease the boiling point of the water.

What is boiling point ?

Boiling temperature is defined as the temperature at which liquid change into a vapour at the atmospheric pressure at sea or ocean level.

For example the boiling temperature of water is 100 degree celcius.

Thus, each mixture decrease the boiling point of the water, option "A" is correct.

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What is atom economy? A. All of these B. The system that determines how much 1 mole of a pure element costs. C. The measure of how much of the reactants end up as products in a chemical reaction. D. The system of exchanging electrons that occurs in atoms.

Answers

Answer:

C

Explanation:

It's the amount of products you get compared to all the reactants you use. It's kind of like economy in that it's profit, and the higher the atom economy the more products/profit you have.

Answer:

C.) The measure of how much of the reactants end up as products in a chemical reaction.

Explanation:

I got it right on founders edtell.

how scientific inferences can be made from scientific observations

Answers

Answer:

The scientific method is applied to inference through the steps taken to make both inductive and deductive inferences. Inductive inference begins with an observation, and then a pattern of such observation develops. One then makes a hypothesis based on the pattern and finally a theory based on the hypothesis

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what is the correct electron configuration for an element with five electrons in the third energy level

Answers

That would be phosphorus. It’s electron configuration is 1s^2 2s^2 2p^6 3s^2 3p^3

[tex]1s^2 2s^2 2p^6 3s^2 3p^3[/tex] is the correct electron configuration for an element with five electrons in the third energy level.

What are elements?

Elements are the simplest substances which cannot be broken down using chemical methods.

The shell nearest to the nucleus, 1n, can carry two electrons, while the next shell, 2n, can carry eight, and the third shell, 3n, can carry up to eighteen.

The third shell carries 18 electrons; 2 in a 3s orbital; 6 in three 3p orbitals; and 10 in five 3d orbitals. The fourth shell carries  32 electrons; 2 in a 4s orbital; 6 in three 4p orbitals; 10 in five 4d orbitals; and 14 in seven 4f orbitals.

The element would be phosphorus. Its electron configuration is [tex]1s^2 2s^2 2p^6 3s^2 3p^3[/tex]

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3. How many meters above sea level is the base of your landform?

How many meters above sea level is the top of your platform?

Answers

Answer:

Base is 715 and top is 850.

Explanation:

715 meters above sea level is the base of my landform and 850 meters above sea level is the top of my platform. Base of landform from a sea level is a starting point of a city or region having same topography. This region has a specific height where it spreads we called it top of the platform. The starting point of my location is 715 meters above sea level spreads up to 850 meters of elevation.

Perform the forlowing
mathematical operation, and
report the answer to the correct
number of significant figures.
4568/13 = [?]

Answers

Answer:

[tex]\large \boxed{350}[/tex]

Explanation:

In multiplication and division problems, the answer can have no more significant figures than the number with the fewest significant figures.

My calculator gives the result:

[tex]\dfrac{4568}{13} = 351.3846154[/tex]

4658 has four significant figures.

     13 has two significant figures.

You must round to two significant figures.

That is, you drop all the digits to the right of the 5 — the red line in Fig. 1 below. You are rounding to the nearest ten.

To round a number to the nearest ten, you look at the number in the ones place (1). See Fig. 2.

If the number to be dropped — the digit in the ones place — is less than 5, you drop the digit in the ones place (Fig. 3). It becomes a zero.

The number in the tens place is a trailing zero. It is not significant.

[tex]\text{The quotient of $\dfrac{4658}{13}$ is $\large \boxed{\mathbf{350}}$}[/tex]

Di- Ethyl zinc is a chemical used in the library to protect books from worms, its composition is 53% Zinc, 38.9% Carbon, and 8.1% Hydrogen (At mass of Zn=65.4, C=12, H=1). Find the empirical formula of a compound

Answers

Answer:

ZnC4H10

Explanation:

The empirical formula of a compound refers to the formula that gives the simplest whole number ratio of each atoms of the elements in the compound.

The empirical formula is calculated thus:

The given percentages in the question represent the mass in grams of each element in the compound.

Zinc= 53%, C= 38.9%, H= 8.1% which represents 53g, 38.9g and 8.1g of each element respectively.

Molar Mass of Zn= 65.4 g/mol

Molar Mass of C= 12 g/mol

Molar Mass of H= 1 g/mol

Step 1: Divide the mass of each element by the molar mass given to convert to moles:

Zn= 53/65.4 = 0.81moles

C= 38.9/12 = 3.24moles

H= 8.1/1 = 8.1moles

Step 2: Divide each mole value by the smallest number of moles calculated, which is 0.81moles:

Zn= 0.81/0.81 = 1

C= 3.24/0.81 = 4

H= 8.1/0.81= 10

This is the mole ratio represented in the subscript of each element in the empirical formula:

That is, Zn (1) C (4) H (10)

Empirical formula= ZnC4H10

The primary function of a scuba regulator is to: Reduce high-pressure gas in the scuba cylinder to a more breathable intermediate pressure. Reduce high-pressure gas in the scuba cylinder to ambient (surrounding) pressure. Provide a diver with a continuous flow of oxygenated air. None of the above.

Answers

Answer:

Reduce high-pressure gas in the scuba cylinder to ambient (surrounding) pressure.

Explanation:

The primary function of a scuba regulator would be to reduce high-pressure gas in the scuba cylinder to ambient pressure.

A scuba regulator is a structure found attached to the scuba cylinder usually carried by scuba divers. The structure regulates the pressure of the breathing gas in the cylinder to a safe level before the gas becomes available for the breathing process of divers.

Usually, the gas in a scuba cylinder is at a high level. Hence, what the regulator does is to bring it down to a level that would be safe for the breathing of the diver.


3. why are fire tornadoes rare ?


Answers

True fire tornadoes have only been documented now twice. and once in Canberra, Australia during 2003. of this tornado. Then, updraft is simply a rising current of air.

which state of matter is Na OH(s)​

Answers

Explanation:

SOLID

Sodium hydroxide exists in the solid phase at room temperature. You would find it in the lab as hemispherical white solid pellets. The phase of a substance depends on temperature and pressure. As you heat a solid, it will melt and change to the liquid phase.

Which of the following is NOT the property of a non-metal? A. Non-rigid structure B. Not ductile C. Low density D. Malleable

Answers

Answer:

The answer is D.

Explanation:

Malleable is the property of metal not non-metal.

Answer:

malleable

Explanation:

because a non metal cannot be harmmed into sheets

Draw the geometric, linkage, and ionization isomers for [CoCl5CN][CN].

Answers

Answer:

See explanation

Explanation:

The formation of isomers is common to octahedral complexes. Isomers are different compounds with the same molecular formula but different structural formulas. Isomers have different atom to atom connections. Werner's complexes can display; polymerization, ionization, linkage, geometric and optical isomerism among others.

Isomers of coordination compounds are not easily recognizable and not easily separable in the laboratory.

The geometric, linkage and ionization isomers of the complex given in the question are shown below.

In the image above the ruler is measuring in centimeters. The blue cylinder falls somewhere between 2.7cm and 2.8cm according to the ruler. Since we can estimate the last digit I would say that the length of the cylinder is 2.76cm. Since I am estimating any number 2.72cm or 2.78cm could also be correct.

Why would 2.755 not be a correct measurement according to estimating the last digit?

Answers

Answer:

The answer is below

Explanation:

Resolution is the smallest unit of measurement that can be measured by a measuring instrument. Each point on the ruler is 0.1 cm and the difference between any two points, about 0.01 cm cam be measured. The minimum measurement (resolution) that can be measured by the ruler is 0.01 cm (two decimals), therefore it cannot measure up to three decimal places such as numbers like 2.755.

What is the molarity of a 50.0ml aqueous solution containing 10.0 grams of hydrogen peroxide H2O2

Answers

Molarity= No of moles of solute * 1000 / vol solution in ml

No of moles= Given mass / Molar mass

Given Mass of solute (H2O2)= 10g

Molar mass of H2O2=34gmol^-1

No of moles= 10/34= 0.294 moles

Volume of solution=50ml

Molarity =   0.294*1000 / 50

Molarity = 5.8M

which statement is true about this reaction 14/7n + 1/1h ------> 15/8o
A. it is a practical source of energy on earth
B.it occurs only outside the solar system
C.its product is heavier than each of its reactants
D.it shows the critical mass of an element

Answers

Answer: answer is C

Explanation:

Its product is heavier than each of its reactants is true about this ₇N¹⁴ + ₁H¹ →  ₈O¹⁵ reaction

What is Nuclear reaction ?

A nuclear reaction is a reaction in which one or more than one nuclides are generate and it collides between two atomic nuclei or one atomic nucleus.

The reaction is  

₇N¹⁴ + ₁H¹ →  ₈O¹⁵

Now equating the mass number of both sides

14 + 1 = 15 + a

a = 0

Equating atomic number of both sides

7 + 1 = 8 + x

x = 0

Thus, we can say that its product is heavier than each of its reactants is true about this reaction

Hence, option C is correct answer.

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Write down the dissolution equation for nickel(II) perchlorate dissolving in water. (Perchlorate is a polyatomic ion with the formula ClO41-.) If four moles of the ionic compound are dissolved, then how many moles of the ANION are present in the solution?

Answers

Answer:

Ni(ClO₄)₂(aq) ⇒ Ni²⁺(aq) + 2 ClO₄⁻(aq)

8 mol ClO₄⁻

Explanation:

Let's consider the dissolution equation for nickel(II) perchlorate dissolving in water.

Ni(ClO₄)₂(aq) ⇒ Ni²⁺(aq) + 2 ClO₄⁻(aq)

The molar ratio of Ni(ClO₄)₂ to ClO₄⁻ is 1:2. If 4 moles of Ni(ClO₄)₂ are dissolved, the moles of ClO₄⁻ formed are:

4 mol Ni(ClO₄)₂ × (2 mol ClO₄⁻/ 1 mol Ni(ClO₄)₂) = 8 mol ClO₄⁻

Give two examples of neutralization

Answers

Answer:examples for neutralization - treating indigestion,treatment for insect bites.hope it help you

Explanation:

what’s the answer to this?

Answers

the mass weight of the rock is 6.8g

In the laboratory, a volume of 100 mL of sulfuric acid (H2SO4) is recorded. How many g are there of the liquid if its density is 1.83 g / cm3?

Answers

Answer:

[tex]\large \boxed{\text{183 g}}[/tex]  

Explanation:

[tex]\begin{array}{rcl}\text{Density} & = & \dfrac{\text{Mass}}{\text{Volume}}\\\\\rho & = &\dfrac{m}{V}\\\\1.83 \text{ g$\cdot$ cm}^{-3} & = & \dfrac{m}{\text{100 cm}^{3}}\\\\m & = & \text{183 g}\\\end{array}\\\text{There are $\large \boxed{\textbf{183 g}}$ of sulfuric acid.}[/tex]

what are the efficient things needed for a village ​

Answers

Answer:

Those aspects which are something a village needs are specified beneath.

Explanation:

Things being equally necessary to make living simpler and therefore more enjoyable. The government has promised to continue providing basic facilities to either an unpopulated location, including such roads, drinkable water, as well as electric power. Therefore, throughout the village, certain things accessible with maximum variety and quality that have become the basic requirements for this human existence.

All the simple machines make work easier to do by changing the _____ or _____ of a force. A. size; type B. work; type C. size; direction D. type; direction

Answers

Answer:

C. size; direction

Explanation:

By definition, a machine is referred to any device that makes work easier. It takes force to do work, hence, work refers to the application of force over a particular distance. A machine aims at making the work easy by changing how it is done. Simple machines, which include: levers, pulleys, inclined planes etc. all carry out the same thing, which is to make work easier, by changing the size/magnitude and direction of the applied force.

A simple machine tends to change the size of the inputted force by increasing it over a shorter distance. The machine increases the force applied better than it can be done manually e.g. a plier and nutcracker increases/changes the applied force better than it can be done with bare hands.

Also, a simple machine can achieve making work easier by changing the direction at which the force is applied. The machine applies the force on the object in an opposite direction or contrary to the way it was manually applied.

The table describes how some substances were formed.
Substance
P.
Q
Description
Formed by boiling pure water
Formed by combining three hydrogen atoms to every nitrogen atom
Formed by adding 5 g of sugar to 1 L of water
Formed by compressing carbon under high pressure
R
S
Based on the given descriptions, which substance is most likely a mixture?
P
Q
R
S

Answers

Explanation:

Which is a pure substance?

1. soda

2. gasoline

3. salt water

4. carbon dioxide

carbon dioxide

Bromine, a liquid at room temperature, has a boiling point of 58°C and a melting point of -7.2°C. Bromine can be classified as a

1. compound.

2. impure substance.

3. mixture.

4. pure substance.

pure substance.

Answer:

the answer is

Explanation:

Sugar and water make a homogeneous mixture (the same proportions of its components throughout any given sample).

which of the following is a scientific question about the cuttlefish?

Answers

Answer:

How does the cuddle fish change its colors?

Please tell me if I'm wrong.

Iron and aluminum are examples of

Answers

Answer:

Iron and aluminum are both examples of metals that are used commonly in everyday life.

Which are the physical properties of water

Answers

Liquids and gas ex. Ponds, rain, vapor

Questions
1 Explain why a solid expands when it is heated.
2 Explain how the liquid in a thermometer changes so that it can be used to
measure a temperature.
3 Use particle theory to explain why solids and liquids cannot be compressed
(squashed into a smaller volume).
4 Use particle theory to explain why liquids and gases can flow.​

Answers

Answer:

answer of question 1 is

Explanation:

solids are denser than liquid and gases because solid particles are closely packed and do not have any empty spaces between their particels so when  solid will heated its particles will spread  and there will have more spaces between them  so a solid expand on heating.        

Define freezing....... Correct and detailed answers will be marked as Brainliest.

Answers

Freezing:

The transformation of liquid into solid when it reaches when it's temperature is below freezing point.

Answer:

Freezing:

When liquid is converted to solid, the process is called freezing.

Conditions for freezing:

1) Temperature must be lowered.

2) The temperature should be below 0 degree centigrade.

Example:

The conversion of "liquid water" into "ice".

=> We can use a "freezer" to freeze things.

Other Questions
1. Determine whether one is eligible for citizenship.2. Submit an application form.3. Pass an FBI background check.4. Complete an interview5. Receive a decision about one's application6.?Which step in the naturalization process is missing?O A. Prove that one meets a minimum income requirementO B. Serve two years in the American military.O C. Serve on a jury at least once.O D. Take an oath of loyalty to the United States. In addition to how much force Earth exerts on the object, which features of an object affect its weight? Which of the following is the graph of the quadratic parent function If the molarity of sugar is 1.1, what will the freezing point be? At Jefferson Middle School, eighty-two students were asked which sports they plan to participate in for the coming year. Twenty students plan to participate in track and cross country; six students in cross country and basketball; and eight students in track and basketball. Twelve students plan to participate in all three sports. A total of thirty students plan to participate in basketball, and a total of forty students plan to participate in cross country. Ten students don't plan to participate in any of the three sports. How many students plan to just participate in cross country? 2 4 40 30 area please it's easy plzzzzzzzzzz What is -13/20 in decimal form What is it called when vesicles are used to move substances out of the cell ?O A. PassiveO B. EndocytosisO C. DiffusionD. Exocytosis Is the sentence, "Baby Got Back", grammatical? You have a scenario where you need to disable the guest network on your wireless router. You try to log in, but your password does not work. After several attempts, you realize that you forgot your password. What can you do? Stress is a major health issue for emerging adults, but only _____% indicate that they are doing well in managing stress. Anderson sold a property to Kelly. The contract contained the following statement: "Buyer to accept the property in an 'as is' condition." Both the seller and the broker knew that the plumbing was in a major state of disrepair, but did not tell Kelly. Would an action against the broker and the seller be successful? Lab Safety Rule #3 says to always add acids or bases to the solvent and NEVER the other way around true or false? In a fish tank, 1/5 of the fish are guppies and 1/12 of the fish are goldfish. Which equation most closely estimates the fraction of the fish that are guppies or goldfish in the tank.suggested answers: 1/2+1/2=1 , 1/2+1/4=3/4 , 1/4+1/4=1/2, 1/4+0= 1/4 Solve for y:1(y+3)=2(y+4)+7 ASAP i need to know the complete working Calculate, correct to one decimal plicethe acute angle between the lines3x - 4y + 5 = 0 and 2x + 3y -1 = 0A. 70.69B. 50.2C. 39.8D. 19.4 log 7 (x^2 + 11) = log 7 15 An investor in the United States bought a one year Brazilian security valued at $195,000 Brazilian reals. The U.S. dollar equivalent was 100,000. The Brazilian security earned 16.00% during the year, but the Brazilian real depreciated 5 cents against the us dollar during the time period ($0.51 to $0.46) Required:a. After the transfer of funds back to the united states, what was the investors return on her $100,000? b. Determine the total ending value of the Brazilian investment in Brazilian reals and then translate this Brazilian value to US dollars. Then compute the return on the $100,000. What is the factorization of 2x^2 + 5x + 3?A. (x+3)(x + 3)B. (x+3)(x + 1)C. (2x+3)(x + 1)D. (2x + 3)(x + 3)