She chops and shapes some of the larger pieces of wood into uniform shapes to build her shelter. What kind of change is taking place as the wood is chopped?

Answer:

False

Explanation:

They need a large amount of energy because they're constantly working

The masses and volume of the required reagent are as follows:

The mass in grams of KCIO₃ needed to produce 2.56 grams of O₂ is determined from the mole ratio of the reaction as given in the equation of reaction below:

2 KCIO₃ (s) → 2 KCl (s) + 3 O₂ (s)

From the equation of reaction, 2 mole of KCIO₃ produces 3 moles of O₂.

Moles of O₂ in 2.56 grams = 2.56/32

Moles of O₂ in 2.56 grams = 0.08 moles

Moles of KCIO₃ required = 0.08 * 2/3

Moles of KCIO₃ required = 0.0533 moles

molar mass of KCIO₃ = 122.5 g/mol

Mass of KCIO₃ required = 0.0533 * 122.5

Mass of KCIO₃ required = 6.53 g

Mass of precipitate formed when 25.00 mL of 0.200M BaCl₂ and 35.00 ml. of 0.125 M Na₂SO₄ are mixed is determined as follows:

BaCl₂ (aq) + Na₂SO₄ → BaSO₄ (s) + 2 NaCl (aq)

Moles of BaCl₂ reacting = 25.00 mL * 1 L/1000 mL * 0.200M

Moles of BaCl₂ reacting = 0.005 moles

Moles of Na₂SO₄ reacting = 35.00 mL * 1 L/1000 mL * 0.125 M

Moles of Na₂SO₄ reacting = 0.4375 moles

Na₂SO₄ is the limiting reactant and moles of BaSO₄ precipitate formed = 0.4375 moles

molar mass of BaSO₄ = 233 g/mol

mass of BaSO₄ precipitate formed = 0.4375 moles * 233 g/mol

mass of BaSO₄ precipitate formed = 1.02 g

Volume of 0.250 M KCl (aq) that will completely react with 50.0 ml.

of 0.115M Pb(NO₃)₂ (aq) is determined as follows:

Pb²⁺ (aq) + 2Cl⁻ (aq) → PbCl (s)

Moles of Pb(NO₃)₂ = 50 ml * 1 L/1000 mL * 0.115 M

Moles of Pb(NO₃)₂  = 0.00575 moles

Moles of KCl required = 2 *  0.00575 moles

Moles of KCl required = 0.0115 moles

Volume of KCl required = 0.0115/0.250

Volume of KCl required = 0.046 L

Volume of KCl required = 46.0 mL

Learn more about volume and moles at: https://brainly.com/question/24322641

#SPJ1

The  third quantum number of a 2p[tex]^{3}[/tex] electron in phosphorus is ml= -1.

Quantum numbers are the set of numbers describe the position of electron and energy of electron in an atom.there are four types of quantum numbers.

Electronic configuration of phosphorus is 1s[tex]^{2}[/tex] 2s[tex]^{2}[/tex] 2p[tex]^{6}[/tex] 3s[tex]^{2}[/tex] 3p[tex]^{6}[/tex]

Quantum numbers for 2p[tex]^{3}[/tex]

1) Principal quantum number (n) = 2

2) Azimuthal quantum number (l) = (n-1) = 1

3) magnetic quantum number (ml) = -l to +l = -1 , 0 , +1

form the given option , ml = -1  for n= 2 , l = 1

Thus,The third quantum number of a 2p[tex]^{3}[/tex] electron in phosphorus is m= -1

To learn more about Quantum numbers here

https://brainly.com/question/25117259

#SPJ1

Answer: A. m/= -1

Explanation:

There are 3.01 × 10¹⁷ moles of AlCl₃ in 1.81 × 10⁴¹ molecules of AlCl₃.

The moles of a substance can be calculated by dividing the number of molecules in the substance by Avogadro's number as follows:

no of moles = no of molecules ÷ 6.02 × 10²³

According to this question, there are 1.81 × 10⁴¹ molecules of AlCl₃. The number of moles in this substance can be calculated as follows;

no of moles = 1.81 × 10⁴¹ ÷ 6.02 × 10²³

no of moles = 0.301 × 10¹⁸

no of moles = 3.01 × 10¹⁷ moles

Therefore, there are 3.01 × 10¹⁷ moles of AlCl₃ in 1.81 × 10⁴¹ molecules of AlCl₃.

Learn more about number of moles at: https://brainly.com/question/19143059

#SPJ1

Light can travel up to 671 million in the time of one hour.

speed of light, the rate at which light rays move through various substances. Specifically, the speed of light within a vacuum is presently calculated to be 299,792,458 meters per second.

One of nature's basic constants is the speed of light. Its importance extends well beyond its use in characterizing one aspect of electromagnetic waves. It acts as the universe's only limiting velocity, setting an upper limit on both the speed of all material atoms and the speed at which signals may travel. The speed of light (c) acts as a proportional constant in the well-known relativity equation, E = mc^2, connecting the heretofore dissimilar ideas of mass (m) and energy (E) (E).

Therefore, the speed of light is 671 miles per hour.

Read more about the speed of light, here

https://brainly.com/question/394103

#SPJ1

The pair of compounds with same empirical formula will be CH3 and C2H6

Empirical formula of a specific compound is defined as the positive integer ratio of atoms that can be found in that specific compound.

Therefore, from the given option above,

The pair of compounds has the same empirical formula is

CH3 and C3H6

The empirical formula of a chemical compound is the simplest whole number ratio of atoms present in a compound.

The empirical formula of a compound can be exemplified using sulfur monoxide, which would simply be SO, as is the empirical formula of disulfur dioxide, S₂O₂.

Learn more about empirical formula at:

https://brainly.com/question/13058832

#SPj1

CH3 and C2H6 will be the compounds that have the same empirical formula one another. Option B

The positive integer ratio of atoms that can be found in a certain compound is what is meant to be understood when speaking about the empirical formula of that particular chemical.

Therefore, based on the alternative presented before,

The empirical formulas of the two compounds are identical to one another.

CH3 as well as C3H6

The empirical formula of a chemical compound is the most straightforward representation of the atomic number distribution in the molecule as a whole.

An example of an empirical formula for a molecule is the chemical symbol SO, which stands for sulfur monoxide. Another example is the empirical formula for disulfur dioxide, which is written as S2O2.

Find out more about the empirical formula by going to:

brainly.com/question/13058832

#SPj1

as per the given values ,ph of this solution is 13.18

We have  [OH−]=1.49 x10⁻¹ M 

Using formula, the  pOH is

:pOH=−log[OH−]

          =−log(1.49 x10⁻¹ M)≈ 0.82

Now, at any temperature, pH+pOH=pKw 

.Assuming standard conditions,  pKw=14 .

As such, the pH is ==> pH+pOH=pKw

                        pH=pKw−pOH

                              =14-0.82

                              ≈13.18

pH is a measure of  acidic/basic nature of solution . It ranges  from 0 - 14, with 7 being neutral. pH of less than 7 means  acidity, whereas a pH of greater than 7  basic solution . pH is  a measure of the relative amount of free hydrogen and hydroxyl ions in the water
.
Learn more about ph calculations here-
https://brainly.com/question/26424076

#SPJ9                      

The Density of copper sample is 8.9 g/cm³ to the nearest tenth.

Density is the ratio of the mass of a substance and the volume occupied by that substance.

Density measures how tightly-packed the particles in a substance are.

The more tightly-packed the particles are, the denser the substance will be.

The  formula for calculating the density of a substance is given below as:

Dense substances have smaller volumes but greater masses.

The mass of the copper sample = 39.2 g

The volume of the copper sample = 4.4 cm³

Hence, the density of the copper sample will be:

Density of copper sample = 39.2 g/4.4 cm³

Density of copper sample =8.9 g/cm³

In conclusion, density is a ratio of mass and volume.

Learn more about density at: https://brainly.com/question/1354972

#SPJ1

The balanced chemical equation for the decomposition is 2 KClO3 (s) ---> 2 KCl (s) + 3 O2 (g)  and the amount of potassium chlorate decomposed is 609.12 g KClO3

On using MnO2 as a catalyst, when potassium chlorate (KClO3) is heated, it breaks down to form potassium chloride and oxygen gas.

Balanced equation of decomposition is given by-

2KClO3-->2KCl+3O2

Given data ;

Actual yield = 83.2 %

Oxygen produced = 198.5 g

Amount of oxygen

= ( 198.5 g O2 / 0.832 )

= 238.58 g O2

So, potassium chlorate decomposed

= 238.58 g O2 × (1 mol O2 / 32 g O2 ) ×( 2 mol KClO3 / 3 mol O2 ) × ( 122.55 g KClO3 / 1 mol KClO3 )

=  609.12 g KClO3

To learn more about balanced chemical equation visit:

https://brainly.com/question/28294176

#SPJ1

The standard free energy change for the following reaction  is -16.7 KJ/mo

Glucose+ ATP ⇒   glucose 6-phosphate + ADP

this is the reaction given

Glucose +Pi   ⇒    glucose 6-phosphate      ΔG°    = 13.8kj/mol

ATP       ⇒         ADP + Pi                             ΔG° = -30.5 KJ/mol

The desired reaction can be obtained by adding the two reaction given in the statement.

So the standard free energy change of the desired reaction is given by adding the standard free energy change of both these reactions.

So here :

= 13.8 KJ/mol + (-30.5 KJ/mol)

= -16.7 KJ/mol

To know more about  standard free energy visit :

https://brainly.com/question/13625901

#SPJ9

The current mass of 206Pb per 1.305g of 238U in the rock is 1.037 grams

To be able to solve this question, we need to know the rate constant and the half-life of the radioactive isotope.

What is the rate constant?

From the first order of kinetics, the rate constant is the proportionality constant in relation to the half-life.

It can be expressed by using the formula:

Now, from the parameters given:

The mass of 238U = 1.300 g

Suppose we assume that the mass of 206Pb = x

Therefore, the equation for the decay constant can be computed as:

x = 2.503 - 1.300

x = 1.203

Now, the mass of the 206Pb is calculated as:

= 1.203 grams

Learn more about rate constant here:

brainly.com/question/26127112

#SPJ9

The IUPAC name of the compound is 1- ethyl-3-methyl-cyclohexane.

An alkane is a compound that is composed of only carbon and hydrogen. The alkane could be an acyclic compound or a cyclic compound. A cyclic compound is one that has the carbon atoms arranged to form a given shape.

The compound now has the carbon atoms at the vertices of the shape. There could also be substituents that are attached to the cyclic compound. If we look at the image as shown, we can see that position 1 has the ethyl substituent and position 3 has the methyl substituent.

With this in mind, we could now properly name the compound as; 1- ethyl-3-methyl-cyclohexane.

Learn more about cyclic compounds:https://brainly.com/question/28195110

#SPJ1

Answer: He concluded  it was dense but not massive

Explanation: Rutherford concluded that his metal foil experiment was that most of an atom was empty-spaced with a tiny, dense, positively charged nucleus at the center that contains the mass of most atoms.

Hope this Helps u3u

Answer:

Methane

Their atmospheres both contain Methane, which makes them appear blue in color. Neptune is believed to have an active and changing atmosphere. Uranus and Neptune have rings and many moons and are part of a group called the Outer planets.

Explanation:

Answer:Uranus and Neptune have similar masses and internal compositions. Their outer atmospheres are composed of hydrogen, helium and methane, while their mantles are a combination of water, ammonia and methane ices, and their cores are a mix of rock and ice.

Structure. Uranus is one of two ice giants in the outer solar system (the other is Neptune). Most (80% or more) of the planet's mass is made up of a hot dense fluid of "icy" materials – water, methane, and ammonia – above a small rocky core.

Explanation:

Answer:

option a

volume

Explanation:

as they differ in mass/weight ,density is not possible

Answer:

They have same volume

Explanation:

[tex]{ \tt{volume = \frac{mass}{density} }} \\ [/tex]

These objects will have the same volume (amount of space occupied) irrespective of their shapes. This occurs if only occupy fluids of the same density.

The volume of beaker is 326.46 mL.

The volume of a substance is the amount of space a given mass of the substance occupies.

Volume is related to mass and density of a substance by the following formula:

The volume of the beaker is calculated as follows:

Volume of beaker = volume of water

The mass of the empty beaker = 44.19 g.

Mass of the beaker + water when filled completely = 370.65 g

mass of water = 370.65  - 44.19 = 326.46 g

density of water = 1 g/mL

Volume of water = mass/density

Volume of water = 326.46 g/1 g/ml

Volume of water = 326.46 mL

Volume of beaker =  326.46 mL

Learn more about volume and density at: https://brainly.com/question/1978192

#SPJ1

The name of the compound is 1 chloro-3- cyclohexane and it is most stable in the equatorial conformation.

A model is a representation of a compound. The model shows us the way that the atoms in the compound are arranged. Thee bonds could be shown by the use of the following kinds of model in science;

1) The ball and stick model

2) The space filling model

Now we know that the model could both serve as a tool for representation as well as a tool of explanation. We could use the model of the molecule to understand the chemical interactions that could be possible for the molecule that is under study.

What we have here is a ball and stick model of the compound 1 chloro-3- cyclohexane

The conformation of the molecule is an indicator of how stable the compound would be. In this case, the more stable conformation of the compound would be the equatorial conformation.

Learn more about conformation:https://brainly.com/question/25324769

#SPJ1

Geese flying south for the winter is migration kind of adaptation the annual, large-scale movement of birds between their breeding (summer) homes and their nonbreeding (winter) grounds.

Adaptation results from evolution. Evolution causes a species to change over a long period of time. Usually, mutations or unintentional gene alterations result in adaptations. Depending on the mutation, a plant or animal may be able to live longer than other members of its species.

Adaptations might be behavioural or physical. Any structural change made to a body part qualifies as a physical adaptation. An animal will often make a response in response to some sort of external stimulation.

To know more about adaptation visit:

https://brainly.com/question/13678169

#SPJ9

The words which will help him make his search for various types of plants on the Internet easier and faster is “different types of plants” and is denoted as option D.

This is defined as the process in which something is sought for carefully through the use of different types of techniques so as to make it easier.

In the case of Mark looking for information on various types of plants, the best words to type will make his search on the Internet easier and faster is “different types of plants” as it contains all the necessary keywords which is used by the search engine to bring out the result.

Read more about Search here https://brainly.com/question/504518

#SPJ1

484.11 feet

Charlotte is driving at 67.5 mi/h

She looks down at her phone and takes her eyes off the road for 4.89 s

so from the above statements, we got

speed of car =  67.5 mi/h

time = 4.89 s

we have to tell distance

so, from the formula

distance = speed * time

let us first convert speed from mi/h to feet/s

1 mile = 5280 feet

1 hour = 3600 sec

speed =  67.5 * 5280/3600

speed = 356,400/3600

speed = 99 feet/s

distance = 99 feet/s *  4.89 s

distance = 484.11 feet

To know more about distance visit :

https://brainly.com/question/15172156

#SPJ9

A circuit for an electronic device is made up of separate electronic parts like diodes, resistors, transistors, capacitors, inductors, and transistors that are connected by conductive wires or traces that allow current to flow.

What mass of copper would be in a 1-mm length of such an interconnect, assuming a square cross section?

Given that wire has a square cross section, its height and breadth are equal in length.

The logic circuitry that reacts to and processes the fundamental commands that power a computer is known as a processor (CPU). Given that it interprets the majority of computer commands, the CPU is regarded as the primary and most important integrated circuits (IC) chip in a computer.

Copper interconnects are interconnects used in semiconductor technology. They serve to cut down on power usage and propagation delays in silicon integrated circuits (ICs).

To know more about Computer processor, click on the link below:

https://brainly.com/question/14744970

#SPJ9

100 g of Glutaronitrile contains 63.81 % C, 6.42 % H, and 29.77 5 N by mass. The molar mass of carbon is 12 g/ mol, hydrogen is 1 g/ mol and the molar mass of Nitrogen is 14 g/ mol.

The chemical formula of a compound shows the number of atoms in the formula.

The number of moles of carbon present is 63.81/ 12 = 5.31 mol

The number of moles of hydrogen present is 6.42/ 1= 6.42 mol

The number of moles of Nitrogen present is 29.77/ 14 = 2.12 mol

Hence, the molar ratio   C:H :N = 5: 6: 2

The empirical formula of Glutaronitrile is C5H6N2.

Therefore, 100 g of Glutaronitrile contains 63.81 % C, 6.42 % H, and 29.77 5 N by mass. The molar mass of carbon is 12 g/ mol, hydrogen is 1 g/ mol and the molar mass of Nitrogen is 14 g/ mol.

To learn more about chemical formulas, refer to the link:

https://brainly.com/question/11995171

#SPJ1

Answer:

7.2km/h.

Explanation:

Therefore, we get the speed of the man crossing a 600m long street in 5 minutes as 7.2km/h.

Repeated observations have consistently shown that oppositely charged objects attract each other and can be considered Law.

The proper sequence of steps inside the medical technique is to look at a phenomenon, develop speculation, design and carry out a Law experiment to check the speculation, examine and interpret statistics, and finally proportion the effects with different scientists. Experiments are hardly ever accurate, so it's important to hold testing a hypothesis. Scientists can learn experimental strategies via repeated checking out of a hypothesis.

Repeated observations help determine whether or not the speculation is constantly genuine in different instances. a systematic idea is a properly substantiated explanation of some factor of the herbal world, primarily based on a body of statistics that have been repeatedly confirmed via statements and experiments. Such reality-supported theories are not guesses but reliable money owed by the real international. scientific theories may be changed or changed while new data disproving the modern principle turns into be had.

Learn more about Observations here:-https://brainly.com/question/3749398

#SPJ9

Answer:

392 grams

Explanation:

Begin by finding the molar mass. You do this by adding the atomic mass of each element in the compound.

So, add 4(12)+8(1)=56 grams C4H8

Next, set up an equation.

We start with 7 moles of C4H8, and we want to convert moles to grams. We will use the molar mass for that.

So 7mol C4H8/1 x 56grams C4H8 per/1 mole C4H8= 392 grams of C4H8 per seven moles of C4H8

Answer:

58.) 2,727.9

Explanation:

although I am not sure but that's what my calculations say so

- - - - - - - - - - - - - - - - - - - - - - - -

For 58:

Pretend some zeros aren't there. It helps quite a bit!

For example:

3000 - 272.1 = 2730

300 - 27.21 = 273

Just don't forget to put them back, and it works great!

- - - - - - - - - - - - - - - - - - - - - - - -

~pinetreee