the closeness of a measurement to its actual value is a measure of its


A. usefulness
B. reproducibility
C. precision
D. accuracy

Answers

Answer 1
The answer is letter D

Related Questions

Compared to gases liquids can be easily compressed. True or false?

Answers

Answer:

true

Explanation:

Answer: false, gases can be more easily compressed than liquids.

Explanation: They're easier to compress because there's much more empty space between the gas particles.

Is all matter the same?

Answers

Answer:

What is your body made of? Your first answer may be that it is made up of different organs like the heart, lungs, and stomach, which work together to keep it going. Or you could go even closer and say that it is made of many types of cells. However, at the most basic level, your body — and indeed, all life, like everything that is not alive — is made up of atoms, often organized into larger structures called molecules

Explanation:

What happens to the temperature of a substance during a change of state?
A. It increases quickly.
B. It changes gradually.
C. It decreases quickly.
D. It stays the same.

Answers

D is the answer it stays the same

Answer:

Explanation:

It remains the same!

Which is another name for groups of elements?

Answers

Answer:

another name for groups of elements is family.

Answer: The Periodic Table of Elements

Explanation: The Periodic Table of Elements is a table with different elements arranged in an order, usually in vertical rows of two.

What Element am I?
I have 5 Valence Electrons.
I am in the 5th row.
My atomic mass is less than Bismuth *
с

Answers

Answer:

Nitrogen

Explanation:

Nitrogen has 5 Valence Electrons.

And its atomic mass is also less than Bismuth.

There are other elements in the 5th row but this one has the lowest atomic mass compared to the others.


Which has a greater energy, a photon of yellow light, or a photon of green light

Answers

Answer:

A photon of green light has a higher energy since it has a higher frequency than the yellow photon. And we can see that on the picture representation of the light spectre.

Nitrogen (N) is element number 7 in the periodic table. It has a mass number of 14. Nitrogen
has gained 3 electrons. Nitrogen is a/an___.
a. Anion
bcation
c. Isotope
d. All of the above

Answers

The answer is ISOTOPE

Use the diagram to select the one true statement about the
rock layers
Use the following diagram to answer questions 3-6.
A. A occured after D
B. C is younger that B
C. C occured before D
D. A is older than B

Answers

Answer:

a is occured after d i think

evaporation
the process in which a solid changes directly into a gas (the term is
sometimes also used for the reverse process)*
CO
1
Chapter 3 Section 2

Answers

Deposition is the phase where gas transfers into solid without passing through the liquid phase.

But the process where solid changes into gas without the liquid transition is called sublimation.

So I’m not exactly sure. But I hope this helps.

Is acetaminophen conductive in water?

Answers

Answer:

Yes, acetaminophen is conductive in water.

Explanation:

Have a nice day!

Acetaminophen is conductive in water and it is electrochemically active. It is used as an antipyretic drug.

What is acetaminophen ?

Acetaminophen is an organic compound containing the amine functional group. One of the most popularly prescribed analgesic and antipyretic medications, acetaminophen (AC), is thought to be both effective and safe.

AC is not poisonous or harmful when used rationally, but an overdose or continued use may cause nephrotoxicity and severe hepatotoxicity. As a result, AC monitoring is crucial for drug safety.

Various conductometric measurements reported the fair conductivity shown by acetaminophen in water. The intermolecular interaction of acetaminophen in water make it conductive.

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is salt always soluble is water?

Answers

For example, salts of sodium, potassium and ammonium are usually soluble in water. Notable exceptions include ammonium hexachloroplatinate and potassium cobaltinitrite. Most nitrates and many sulfates are water-soluble

Answer:

Many ionic compounds exhibit significant solubility in water or other polar solvents. Unlike molecular compounds, salts dissociate in solution into anionic and cationic components. For example, salts of sodium, potassium and ammonium are usually soluble in water.

Explanation:

Hope this helps

Which refers to the number of wavelengths that pass a fixed point in a second?
wavelength
O amplitude
frequency
O compression


Please hurry will give brainliest on 10 mins

Answers

Answer:

frequency

Explanation:

The number of wavelengths that pass through a fixed point in a second is called the frequency of the wave. It has the unit of Hertz. Hence, option C is correct.

What is frequency ?

The term that refers to the number of wavelengths that pass a fixed point in a second is frequency.

Frequency is a fundamental concept in wave motion and is defined as the number of complete cycles of a wave that occur per unit time. For example, the frequency of a sound wave is measured in hertz (Hz) and is equal to the number of sound wave cycles that occur per second.

The higher the frequency of a wave, the more cycles occur in a given period of time. Wavelength, on the other hand, refers to the distance between two adjacent points on a wave that are in phase with each other, such as the distance between two crests or two troughs.

Wavelength and frequency are related, and the frequency of a wave is inversely proportional to its wavelength. As the frequency of a wave increases, its wavelength decreases.

Amplitude refers to the maximum displacement of a wave from its equilibrium position, while compression is a region in a longitudinal wave where the particles are close together. Hence, option C is correct.

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the chemical formula 4N2O has how many atoms of each element?

Answers

Answer:

8;1

Explanation:

eight nitrogen and one oxygen

How can we write a chemical reaction that explains what happens during a chemical change?

Answers

Answer: When we represent a chemical reaction in terms of words, we write a word equation. For example, when hydrogen gas reacts with oxygen gas to form water, we can write a word equation for the reaction as follows: hydrogen + oxygen→ water To the left of the arrow, we have the 'before' situation.

Explanation:

give an example how we use science in our every day life

Answers

Answer: When you turn a light on it becomes bright :)

In electrical wiring, a light switch is a switch most commonly used to operate electric lights, permanently connected equipment, or electrical outlets. Portable lamps such as table lamps may have a light switch mounted on the socket, base, or in-line with the cord. Manually operated on/off switches may be substituted by dimmer switches that allow controlling the brightness of lamps as well as turning them on or off, time-controlled switches, occupancy-sensing switches, and remotely controlled switches and dimmers. Light switches are also found in flashlights, vehicles, and other devices.

An example of how we use science in our everyday life is cooking and baking.
We combine certain ingredients and certain measurements to make delicious foods and drinks. And when we add heat, it makes bread rise, causing a chemical reaction because you cannot reverse a cake back into the individual ingredients.

Hope this helps! :3
(This is not a sample from anything. This is in my own words, so I’m not sure if it is right, but this is an example of how we use science.)

PLEASE I NEED HELP ASAP

Answers

Answer:

Because the density of water is one

Zn + 2HCl--------------> Zn Cl2 + H2
This is ______________________ kind of reaction.

Answers

Answer:

Single displacement (Substitution)

Explanation:

PLZ DON"T JUST PICK AN ANSWER I REALLY NEED HELP
5. Sodium-24 has a half-life of approximately 15 hours. If only one-eighth of the sodium-24 remains, about how much time has passed?
A. 15 hours
B. 30 hours
C. 45 hours
D. 60 hours

Answers

Answer:

60 hours

Explanation:

18.0 __15__ 9 __15__ 4.5 __15__ 2.25 __15__ 1.125g

15(4)= 60

Sodium-24 has a half-life of approximately 15 hours. If only one-eighth of the sodium-24 remain , then it has been passed in 60 hours. So option D is correct.

What is half life and decay law ?

The time required for half of the original population of radioactive atoms to decay is called the half-life. The relationship between the half-life, T₁ ÷ 2, and the decay constant is given by T₁/2 = 0.693/λ

According to radioactive decay law, the rate of decay of radioactive atoms at any instant is directly proportional to the number of atoms present at that instant.

dtd N ∝ N

dtd N = λ N

where, N is number of integrated nucleus present in the sample at any time t and λ is decay constant.

Thus ,option D 60 hours is correct.

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What location of an atom are protons,neutrons, and electrons found

Answers

Answer:

Nucleus is the answer of your question

Answer:

nucleus is your awnser

HELP ME ASAP TO GET BRAINLYYYY!!!!

Answers

Answer:

B C A

Explanation:

because as you pour the blue stuff in it will straight up go to the bottom (and has less blue coloring) Then it will go to the top (lil more blue coloring) then eventually the whole jar will be blue

hope this helps you out bro

Answer:

The order is B, C, A.

Explanation:

When the liquid is first poured into the container, the entropy is still very high because there is a very large difference in color of the liquid. The more time passes, entropy becomes lower because the blue color liquid disperses through the rest of the container. So the entropy is the highest in B and lowest in A. At A the entropy is as close to 0 as it can be in this situation out of the three parts.

Convert 20 cals to J

Answers

Answer: 83.68 J

Explanation:

1 cal=4.184 J

1×20=4.184×20

20cals=83.68 J

Why do isotopes of the same element have the same atomic size?

Answers

Answer:

Isotopes of any given element all contain the same number of protons, so they have the same atomic number (for example, the atomic number of helium is always 2). Isotopes of a given element contain different numbers of neutrons, therefore, different isotopes have different mass numbers.

The atomic size of an element significantly depends on the number of protons. It is the characteristic property of isotopes that they possess the same number of protons which is responsible for the same atomic size.

What are Isotopes?

Isotopes may be defined as one of two or more species of atoms of a chemical element that have the same atomic number and location in the modern periodic table with identical chemical behavior but with different atomic masses and physical properties.

In a more simple sense, isotopes are those elements that have the same atomic number but different atomic mass. The atomic number depends on the number of protons which remains constant in isotopes. So, the isotopic elements have identical atomic sizes.

Therefore, the isotopes of the same element have the same atomic size.

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Which of the following is a fossil fuel?
A. oil
B. Copper
C. aluminum
D. Cattle

Answers

Answer: oil

The answer is A, oil. Oil is one of the most popular fossil fuels. You probably did not know the answer was fossil fuels. The answer is oil.

Hope this helps you!

How much zeros does 1 million have? and 2 days ago was my bday turning 13
#LibraGurl

Answers

Answer:

there is about 6 zeros in 1,000,000

Answer:

6   0's

Explanation:

happy bday #LibraGurl

(1 Point)
How many atoms are there in 3.33 moles of strontium?

Answers

I don’t know the answer but there’s this app called socratic that might be able to help.

Answer:

every mole of anything contains Avogodro's number of atoms.  So: 6.08x10^23 x 3.33 = ?

Explanation:

Describe the way matter is measured

Answers

Answer:

in volume in weight and distibution

Explanation:

In volume and weight have a good day

Ionic compounds can conduct electricity in

Answers

when molten (liquid format ) because their ions are free to move from place to places , Ionic compounds CANNOT conduct electricity when SOLID , as their ions are held in fixed positions and cannot move. I hope this helps :)

Answer:

Solution and the liquid state

Explanation:

Edge2020

Is this isotope stable or radioactive?

Answers

Answer:

radioactive

Explanation:

becasue i said so. Periodt

Answer:

An unstable isotope emits some kind of radiation, that is it is radioactive.

Explanation:

What are the three basic forms of matter?

Answers

Answer:

Solid, Liquid, and Gas!

Explanation:

Which of the following is not part of a phospholipd?

A) galactose
B) fatty acid
C) phosphate
D) glycerol

Pls help due today

Answers

Answer:

A) Glycerol

Explana

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