carbon-14 has a half-life of 5,730 years. how long will it take for 112.5 g of a 120.0-g sample to decay radioactively?

Answers

Answer 1

Answer:

It will take 22920 years to decay 112.5 g of 120 grams.

Explanation:


Related Questions

when an acid and alkali react to form water and salt

Answers

Answer:

Neutralisation involves an acid reacting with a base or an alkali, forming a salt and water.

the ____ changes when electrons are gained or lost.

Answers

Answer: Matter changes when electrons are gained or lost.

Explanation:

The charge on an atom  changes when electrons are gained or lost during chemical changes.

What is an atom?

An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether it is  solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.

The protons are positively charged  particles and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral  species and stable due to presence of oppositely charged particles.

Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.

Learn more about atom,here:

https://brainly.com/question/13654549

#SPJ6

I’m in science class right now and I need help on these questions

Answers

Answer:

hello

Explanation:

001 10.0 points
If you mix 4.5 g of HCl in enough water to
make 0.9 L (900 mL) of solution, what is the
molarity of the solution?
Answer in units of M.

Answers

M=moles of solute/liters solvent

4.5g HCl/36.45 g/mol HCl=0.12 moles

0.12/0.9= 0.14 M

Hellpppppppppppppppppppppp

Answers

Answer:

SnH4

Explanation:

Because the melting point of SnH4 is higher than CH4

A titration process is done by using 0.2M of 20 ml of third analytical group main reagent solution with 0.1 M nitric acid solution if nitric acid is replaced by sulphuric acid of same concentration, then the volume of sulphuric acid equals ……

Half the volume of nitric acid
Double the volume of nitric acid
The volume of nitric acid
Quarter the volume of nitric acid

Answers

Sulfuric acid undergoes dissociation reaction to produce twice the amount

of hydrogen ions produced by nitric acid in solution.

The volume of sulfuric acid equals; Half the volume of nitric acid

Reasons:

The concentration of the analytical group = 0.2 M

Volume of reagent = 20 ml

Concentration of the nitric acid to be replaced = 0.1 M

Replacement for the nitric acid = Sulfuric acid

Concentration of the sulfuric acid = Concentration of the nitric acid = 0.1 M

Reaction = Titration

Solution:

Sulfuric acid in solution gives; H₂SO₄ (aq)  ⇄ 2H⁺ (aq) + SO₄²⁻(aq)

For nitric acid, we have; HNO₃ (aq) ⇄ H⁺(aq) + NO₃⁻(aq)

Therefore;

1 mole of sulfuric acid gives 2 moles of hydrogen ions

0.1 M solution of sulfuric acid gives 0.2 moles of hydrogen ions per liter

0.1 moles of hydrogen ions are therefore present in half a liter solution of 0.1 M sulfuric acid solution.

However;

0.1 M of nitric acid gives 0.1 moles of hydrogen ions per liter

Therefore;

The volume of sulfuric acid required = Half the volume of nitric acid

Learn more about titration and quantitative chemical analysis here:

https://brainly.com/question/6800262

https://brainly.com/question/6548806

https://brainly.com/question/13031875

Select all the correct answers.
In the cathode ray tube experiment, J.J. Thomson passed an electric current through different gases inside a cathode ray tube in the presence of
an electric field. In which two ways did this experiment change scientists' understanding of the atom?
O It showed that atoms combine in different proportions.
O It showed that atoms can be divided into smaller parts.
M It showed that all atoms of the same element are similar.
D
It showed that individual atoms could be destroyed
showed that all atoms contain electrons.

Answers

The two ways the cathode ray tube experiment changed scientists'

understanding of the atom was it showing that atoms can be divided into

smaller parts and all atoms contain electrons.

J.J Thompson was the scientist which performed the cathode ray tube

experiment and was able to ascertain it was negatively charged as a result

of it being deflected to the positive electrode.

His observation showed that the atoms contain sub-atomic particles called

electrons which are negatively charged.

Read more on https://brainly.com/question/15361325

Cu(OH)₂ +H₃PO₄ = Cu₃(PO₄)₂+H₂O

how do i balance this equation

Answers

balanced equation =

3Cu(OH)2 + 2H3PO4 → Cu3(PO4)2 + 6H2O

For the following hypothetical reaction:

3A + 12B --> 3C

How many moles of B will you need to convert 5 moles of A into as many moles of C as possible?

Answers

Answer:

20

Explanation:

You need 4 times the amount of B, compared to a (there is a 3A:12B which reduces to 1:4), so 4 times 5 is 20.

Hope this helps!

Why is there a large difference between day and night temperatures in a desert?

All rainfall in a desert happens at night.

There are no plants to trap the heat.

Heat escapes rapidly at night because the air is so dry.

The ground absorbs all heat. 20 points :,)

Answers

Answer: Heat escapes rapidly at night because the air is so dry.

Explanation: The desert has little humidity and rarely is cloudy. These two factors allow the desert to heat up rapidly during the day and cool off quickly at night.

Will calcium metal react with chromium (III) chloride? Explain your answer

Answers

Calcium metal with chromium(III) chloride would react. Calcium metal is more reactive than chromium metal; therefore, putting calcium metal in chromium chloride would create a reaction, where as putting chromium metal in calcium chloride would not form any reaction.

Match each term in the first column with an example in the second column. On a sheet of paper, write the letter of the answer.

1. physical property
2. chemical property
3. solid.
4. liquid
5. physical change
6. chemical change
———————————————
A. ability to burn
B. rust appears on a nail
C. a puddle freezes
D. substance that has a definite shape and volume
E. temperature or destiny
F. substance that has a definite volume, but no definite shape

Answers

Answer:

4 = f

3 = d

5 = c

6 = b

2 = a

1 = e

Explanation:

In the following experiment, a coffee-cup calorimeter containing 100mL OF H2O is used.

Answers

Please provide more of the question so I am able to answer, but I do know that H20 has 0 calories.

explain the concept of kenetic molecular theory

Answers

Not sure if you meant kinetic.. The theory states that gas particles are in constant motion and exhibit perfectly elastic collisions. The theory is based on the idea that matter is composed of tiny particles that are always in motion.

What type of mixture is throughly mixing powdered lemonade with water

Answers

Answer:

I believe it would be a solution I could be wrong tho

Explanation:

Answer:

a solution

Homogeneous mixtures (solutions)

Explanation:

Lemonade is a special type of mixture called a solution.

...................................................................................................................................................

What type of mixture is made by thoroughly mixing powdered lemonade with water?

Homogeneous mixtures (solutions)

Mixtures with substances dissolved evenly into one another, like pink lemonade powder dissolved in water, are called homogeneous mixtures, or solutions.

explain how wavelength is related to the energy of a wave

Answers

Answer: as the wavelength gets shorter, the energy increases; as the wavelength gets longer, the energy decreases. The greater the energy, the larger the frequency and the shorter (smaller) the wavelength.

Answer:

Just as wavelength and frequency are related to light, they are also related to energy. The shorter the wavelengths and higher the frequency corresponds with greater energy. So the longer the wavelengths and lower the frequency results in lower energy. The energy equation is E = hν.

Just saying, you have the wrong subject. This should be physics I think.

4. How are isotopes of the same element different? Select all that apply.
[]They have different masses.
[]They have different numbers of electrons.
[]They have different numbers of neutrons.
[]They have different numbers of protons.

Answers

[tex]\huge \bf༆ Answer ༄[/tex]

The Correct choice is ~ A

Isotopes are the elements with same Atomic Number but different masses ~

Calculate the molar mass of NH4NO3. Molar mass of NH4NO3 = g/mol.

Answers

The molar mass of NH4NO3 in g/mol is 80g/mol.

HOW TO CALCULATE MOLAR MASS:

The molar mass of a compound can be calculated by summing the atomic masses of its constituent elements.

In ammonium nitrate (NH4NO3), there are nitrogen, hydrogen, and oxygen elements.

Atomic mass of nitrogen = 14Atomic mass of oxygen = 16Atomic mass of hydrogen = 1

Molar mass of NH4NO3 = 14 + 1(4) + 14 + 16(3)

Molar mass of NH4NO3 = 80g/mol

Therefore, the molar mass of NH4NO3 in g/mol is 80g/mol.

Learn more about molar mass at: https://brainly.com/question/8101390?referrer=searchResults

Answer:

80g/mol

Explanation:

edge 2022

What is the main cause of global convection currents?

A. Deforestation

B. The Greenhouse effect

C. The increase in the number of cities

D. Uneven heating of the Earth by the sun

Answers

A. Deforestation

Energy from the sun is transferred from the Earths surface to the atmosphere, resulting in atmospheric convection currents that produce winds.

Answer: The answer is D, uneven heating of the Earth by the Sun.

Food waste, like a feather or a bone, fall into food, causing
contamination.
Physical
Chemical
Pest
Cross-conta

Answers

Answer:

what do I need to do?..

..

Feather or bone when fall into food causing Physical  contamination.

Food waste, like a feather or a bone etc fall into food causing Physical  contamination because the contaminants such as feather and bone are mixed in the food physically not chemically. These contaminants can be removed through physical means such as with the help of hand.

Some contaminants mix with the food chemically means they react with the food and produce something new. Such type of contaminants are present in liquid form so we can conclude that feather or a bone etc when fall into food causing Physical  contamination.

Learn more about contamination here: https://brainly.com/question/3459685

Learn more: https://brainly.com/question/25889410

Which molecule has ionic bond?
Mg
C0
NaCl
N0

Answers

NaCl - Chlorine has an outer shell with 7 electrons it wants to gain from the Sodium to become stable, whereas the Sodium wants to lose an electron to become stable.

How much does the universe(galaxy) weigh?

Answers

Answer:  Universe

Mass of ordinary matter

The mass of the observable universe is often quoted as 1050 tonnes or 1053 kg. In this context, mass refers to ordinary matter and includes the interstellar medium (ISM) and the intergalactic medium (IGM). However, it excludes dark matter and dark energy.

Density (of total energy): 9.9×10−27 kg/m3 ...

Mass (ordinary matter): 1.5×1053 kg

Contents: Ordinary (baryonic) matter (4.9%); D...

Volume: 3.566×1080 m3

Explanation:  Galaxy

around 1.5 trillion solar masses

Their answer: The galaxy weighs around 1.5 trillion solar masses. This number helps put in perspective how very small we are. Take, for instance, where stars in the Milky Way fit in.

does Waves move in a circular motion.
True or false​

Answers

why yes

Waves are created by energy passing through water, causing it to move in a circular motion

A gas in a rigid container at 25°C has a pressure of 0. 96 atm. A change in temperature causes the pressure to increase to 1. 25 atm. What is the new temperature of the gas? Use StartFraction P subscript 1 over T subscript 1 EndFraction equals StartFraction P subscript 2 over T subscript 2 EndFraction. â€""44. 2°C 32. 6°C 115°C 388°C.

Answers

The new temperature of the gas is 115 °C

From the question given above, the following data were obtained:

Initial temperature (T₁) = 25 °C = 25 + 273 = 298 K Initial pressure (P₁) = 0.96 atmNew pressure (P₂) = 1.25 atmNew temperature (T₂) =?

The new temperature of gas can be obtained as follow:

[tex] \frac{P_1}{T_1} = \frac{P_2}{T_2} \\ \\ \frac{0.96}{298} = \frac{1.25}{T_2} \\ \\ cross \: multiply \\ \\ T_2 \times 0.96 = 298 \times 1.25 \\ \\ divide \: both \: side \: by \: 0.96 \\ \\T_2 = \frac{298 \times 1.25 }{0.96} \\ \\ T_2 = 388 \: K \\ \\ subtract \: 273 \: from \: 388 \: to \: express \: the \: answer \: im \: \degree \: C \\ \\ T_2 = 388 - 273 \\ \\ T_2 = 115 \: \degree \: C [/tex]

Therefore, the new temperature is 115 °C

Learn more about gas laws: https://brainly.com/question/25862018

which tool would be best for measuring centimeters
A. Metric ruler
B. Balance scale
C. Meter scale
D. Measuring tape

Answers

Answer:

the answer is d

Explanation:

D. measuring tape
mark brainleist

Consider the reaction below. 2H2 O2 Right arrow. 2H2O How many moles of water are produced from 13. 35 mol of oxygen? 6. 675 mol 26. 70 mol 53. 40 mol 66. 75 mol.

Answers

Considering the reaction stoichiometry, the correct answer is second option: the total number of moles of water produced from 13. 35 mol of oxygen is 26.7 moles.

The balanced reaction is:

2 H₂ + O₂ → 2 H₂O

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

H₂: 2 moles O₂: 1 mole  H₂O: 2 moles

Then you can apply the following rule of three: if by stoichiometry 1 moles of O₂ produce 2 moles of H₂O, 13.35 moles of O₂ will produce how many moles of H₂O?

[tex]amount of moles of H_{2} O=\frac{13.35 moles of O_{2} x2 moles of H_{2} O}{1 mole of O_{2}}[/tex]

amount of moles of H₂O= 26.7 moles

Finally, the correct answer is second option: the total number of moles of water produced from 13. 35 mol of oxygen is 26.7 moles.

Learn more about stoichiometry:

brainly.com/question/16487206?referrer=searchResults brainly.com/question/14446695?referrer=searchResults brainly.com/question/11564309?referrer=searchResults brainly.com/question/4025026?referrer=searchResults brainly.com/question/18650135?referrer=searchResults

magine that you are a water molecule in a group of many water molecules. Write a letter to a friend telling them about your journey through the water cycle on Earth. You can begin your journey anywhere you’d like, but you must complete an entire cycle and end the journey where you began. Write your letter in complete sentences. Use each of the following terms correctly in your letter: • condensation • evaporation • precipitation • collection (HELP PLS ILL GIVE 54 points *all my points* AND GIVE BRAINLIEST HELP PLS)

Answers

Answer:

Explanation:

One day I was sitting on a leaf, in the early morning if a Tuesday, and I was just relaxing there. I then heard Bob( the water molecule next to me) say that he heard it was going to get pretty hot today. As the day went on I started to get pretty warm and I starting to evaporate and fly into the sky! It was really weird to see the world from up high. I stayed up there bouncing between clouds with Bob for a few hours, until the wind started to pick up and it got colder. I then started to shiver and began condensing with the other water molecules (and Bob). As it got colder we began to plummet to the earth really fast in the precipitate form of a water droplet. We hit the ground with a big ker-plop! I looked around me and we weren't the only ones. A bunch of other droplets had started to collect and form a puddle.

Hope this helps!

Write word equations for the reactions of a) magnesium with chlorine b) potassium with oxygen c) sodium with bromine d) carbon with oxygen.​

Answers

a) Magnesium + Chlorine -> Magnesium chloride ( Mg + Cl2 -> MgCl2)

b) Potassium + Oxygen -> Potassium oxide
( 2K + O2 -> K2O )

c) Sodium + Bromine -> Sodium bromide
( 2Na + Br2 -> 2NaBr)

d) Carbon + Oxygen -> Carbon dioxide
( C + O2 -> CO2 ) This reaction occurs when heated.

Enter the correct ground-state (or lowest energy) configuration based on the number of electrons: 1s^4 2s^4 2p^12.
Express your answer in complete form in the order of orbital filling as a string without blank space between orbitals.

Answers

Answer:

The ground state configuration is the lowest energy, most stable arrangement. An excited state configuration is a higher energy arrangement (it requires energy input to create an excited state). Valence electrons are the electrons utilised for bonding.

or the

FIGURE 5.9 The arrow shows a second way of remembering the order in which sublevels fill. Table 5.2 shows the electron configurations of the elements with atomic numbers 1 through 18.

Element Atomic number Electron configuration

sulfur 16 1s22s22p63s23p4

chlorine 17 1s22s22p63s23p5

argon 18 1s22s22p63s23p6

or the

Two electrons

Two electrons fill the 1s orbital, and the third electron then fills the 2s orbital. Its electron configuration is 1s22s1.

Explanation:

Choose your answer

brainlilest me

CARRY ON LEARNING

Please help! i will give brainliest!
When a solid air freshener gets smaller over time and runs out is it a physical change or chemical change? please say why?

Answers

Answer:

i think this would be an example of a physical change because here the substance is changing directly from a solid to a gas without passing through the liquid state which means that the composition of the substance has not changed and remains the same. This is also called sublimation.

Other Questions
What is the motivation for many of the authors in The Modern Age of poetry?a) They wrote simply to make money so their family could survive.Ob) They wrote for love and to express their feelings about a person.c) They wrote for self-reflection and to look within one's self for clarity.d) The wrote in response to social/political issues to invoke a change. Consider the graph.Which function best represents the distance remaining, in miles, after x minutes?f(x)=107x+35f ( x ) = 10 7 x + 35f(x)=710x+35f ( x ) = 7 10 x + 35f(x)=710x+35f ( x ) = 7 10 x + 35f(x)=107x+35f ( x ) = 10 7 x + 35 PLz HELP ME NOW AND I WILL MARK U BRAINLIEST 13^5/13^x=13^4Does anyone know how to solve this? URGENT!!!!!!!!!!!!!!! :m(x) = -1/2f(x - 3) - 1 look at picture for problem write an equation in slope intercept form of the line that passes through the points (-3,6) and (0,0) QD = 20000 -3P QS = 15000 +2P Write an equation in slope-intercept form for the line with slope -1/4 and -7 y-intercept. NO LINKS. Find the equation that has a slope of -2 and passes through the point (0,4)pleaseeeee help plzhelphelphelphelphelphelp pls solve this equation for brainliest 2a+2=8? (-a + (-b)) + (-c) = -(a + b) + (-c)A:associativeB:commutativeC:distributiveD:opposite of a sum what is the caloric breakdown for 1 gram of carbohydrates? A student wants to check six websites. Four of the websites are social and two are school-related. After checking just two sites, she has to leave for school. What is the approximate probability that she checked a social website first, then a school-related website? 0. 042 0. 267 0. 533 0. 667. in excel If you have a lengthy text, adding a __________ can change the cells format to ________. * What level of biodiversity is most commonly equated with the over concept of biodiversity If a seller can create switching costs for its product, then: ________________a. customers will find it more costly to stay with the company than to switch to another seller.b. it increases its costs by producing several versions of the product so customers can switch between versions. c. it is difficult or costly for the seller to switch to producing a different product. d. it is difficult or costly for customers to switch to another seller of the product. You want to create an orange color in order to paint the Orioles Bird. You have the colors yellow and red to make the orange paint. The recipe for Orioles orange paint is 1/2 cup yellow paint to 1/4 cup red paint. Using this ratio:Part 1: How much yellow paint do you need to combine with one cup of red paint?Part 2: How much red paint do you need to combine with one cup of yellow paint?Each snap cube represents 1/4 cup of paint. I NEED HELP I NEED HELP I NEED HELP I NEED HELP I NEED HELP