Chemistry Middle School

(need 12) project due monday!
what are things we use in everyday life that contain minerals (please list the minerals) <3

Answers

Answer 1
We use Granite counter tops

We take vitamins 

We use salt.

Related Questions

How did humans and animals adapt/survive to hurricane Katrina? AND Give examples of organisms that could not adapt/survive? PLS ANSWER HELP 100 POINTS

Answers

Some organisms that could not survive where cats, dogs, birds, horses, fish, cows, every animal that was in hurricane Katrina was affected by it. Some of these animals were able to survive and others were rescued from near death.
Most of the animals could not adapt to this change because they are not used to this type of change. The water was too strong for the fish and when the water brought the fish into any water/sea animal there was also medal because the water in through peoples houses (pretty much the man-made stuff that's not meant for sea is killing the animals in the water). 
Any animal that was left behind was affected. The animals could not adapt to this change they have never experienced something that tragic before, how they survived? Well, the animals that survived was mainly because of there natural instinct, before an earthquake or anything hits there are many animals that can sense the storm coming before it even hits and in this situation, the animal could, wake up, run to owner, flee, run to higher ground, and if they cant sense it. They see whats going on around them and then they know something is wrong.

Hello!


Most people/ animals died from Hurricane Katrina. 600,000 pets died from the devastating hurricane and 1,833 people died. People adapted by getting to higher ground and doing what you can to survive. Animals unfortunately didn't have the capabilities to climb upon houses and such. They don't have arms and legs like humans do, so many animals died. Animals that died are : cows, dogs, cats, and such on. 80% of New Orleans was under water and up to 20 ft deep in some places.


Hope it helps!

Correct scientific term for a substance that is burned to provide heat?

Answers

Fuel......................................

What is something that has mass and takes up space

Answers

Humans.
Humans have mass and take up space. :)

Hope this helps!
Matter is anything that has mass and takes up space

Which stage of the cell cycle usually lasts the longest

Answers

The interphase usually lasts the longest
The longest stage is the growth and development of the cells, would be at the interphase, it is here, where DNA replication is occurring and the organelles are being moved and replicated as well.

The world's population:
  is unequally distributed
 lives primarily in agricultural areas
 decreases slightly each year
 all of the above

Answers

you can rule out "all of the above" and "decreases slightly each year" because human population is increasing.

Agricultural areas is Farm land which does not have high population. This leaves world population is unequally distributed.. Which is true

Answer:

is unequally distributed

Explanation:

because my finals say so

Instructions: Select the correct answer.

Generators need a source of energy to produce electricity. Which form of energy is a nonrenewable source of energy?

A. hydro (water) energy

B. geothermal energy

C. fossil fuel

D. wind energy

Answers

The answer is going to be C. Although producing at a fast rate, fossil fuel cannot be re-used or recycled. Wind can be re-used, geothermal energy can be re-used, and hydro energy can be re-used.

Hope this Helps! :)

Quantitative data or observations mean that you measure something. Which observation made by Ben is quantitative?
A) Each pea pod grew 5 centimeters in a week.
B) The pea plants that were given fertilizer grew taller.
c) Some of the pea plants did not have flowers or pods.

Answers

Quantitative data is specifically quantifiable or measurable. As options B and C are vague statements about growth and contain no specifics about measurement, they are not correct.

Answer:
A) Each pod grew 5 centimeters in a week.

Choose all of the answers that are correct when describing this atom.

This atom is chlorine.
This atom is bromine.
The mass of this atom is 52 amu.
This atom has an overall charge of 0.
The mass of this atom is 69 amu.

Choose all that apply

Answers

I believe that this atom is  chlorine and the atom has an overall charge of zero.
Chlorine is chemical element which is atomic number 17 in the periodic table. Each chlorine atom has 17 protons (positively charged) in the nucleus balanced by 17 electrons (negatively charged) in the energy shells ( thus an overall charge of zero) 

Answer:

This atom is chlorine.

The mass of this atom is 35 amu.

This atom has an overall charge of 0.

ExplanatiI GOT IT RIGHT

The law of universal gravitation states that any two objects in the universe, without exception, a. attract each other. b. repel each other. c. combine to provide a balanced force. d. create friction. im not sure help

Answers

Newton's law of universal gravitation states that a particle attracts every other particle in the universe with a force which is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers. Using this law the answer will be A. attract each other.

What would happen if there were no abiotic factors in an ecosystem

Answers

If one factor is removed or changed, it can affect the entire ecosystem and all of the organisms that live there.
Hello, 

Here is you answer:

The proper answer to your question is that "if there was no abiotic factors the living organisms would not be affected by them which means the economy will flourish".

If you need anymore help feel free to ask me!

Hope this helps! 

Mr X was accused of speeding along a highway. He was travelling at different speeds,but an average speed of 80 km/h. Based on thr given information, is Mr X gulity or innocent?

Answers

Mr x is guilty
hope u got ur and

Comparing the mass of the nucleus with the mass off the protons and mass of the neutrons refers to what

Answers

Answer:nada defect

Explanation:

What is the most stable condition for an atom

Answers

Atoms are at their most stable when their outermost energy level is either empty of electrons or filled with electrons.
Atoms are at their most stable when their outermost energy level is either empty of electrons or filled with electrons. Ions. sodium and chlorine chloride ion. Sodium atoms have 11 electrons.

If Kp = 0.15, which statement is true of the reaction mixture before any reaction occurs?

Answers

The given sentence is part of a longer question.

I found this question with the same sentence. So, I will help you using this question:

For the reaction N2O4(g) ⇄ 2NO2(g), a reaction mixture at a certain temperature initially contains both N2O4 and NO2 in their standard states (meaning they are gases with a pressure of 1 atm).  If Kp = 0.15, which statement is true of the reaction mixture before any reaction occurs?


(a) Q = K;   The reaction is at equilibrium.
(b) Q < K;   The reaction will proceed to the right.
(c) Q > K;   The reaction will proceed to the left.

The answer is the option (c) Q > K; The reaction will proceed to the left, since Qp = 1, and 1 > 0.15.
Explanation:

Kp is the equilibrium constant in term of the partial pressures of the gases.

Q is the reaction quotient. It is a measure of the progress of a chemical reaction.

The reaction quotient has the same form of the equilibrium constant but using the concentrations or partial pressures at any moment.

At equilibrium both Kp and Q are equal. Q = Kp

If Q < Kp then the reaction will go to the right (forward reaction) trying to reach the equilibrium,

If Q > Kp then the reaction will go to the left (reverse reaction) trying to reach the equilibrium.

Here, the state is that both pressures are 1 atm, so Q = (1)^2 / 1 = 1.

Since, Q = 1 and Kp = 0.15, Q > Kp and the reaction will proceed to the left.

a mixture of emanations from radioactive atoms is passed through electrically charged plates imagination number one is attracted to the negative plate number to is attracted to the positive plate and number three goes to go straight through on the flag.

Answers

Final answer:

The experiment involves alpha, beta, and gamma rays (different types of radioactive decay) passing through electrically charged plates, being attracted based on their charge, with alpha particles going to the negative plate, beta particles to the positive, and gamma rays passing through unaffected.

Explanation:

The experiment described involves the passing of radioactive emissions from various atoms through a pair of electrically charged plates. The attraction of certain particles to either the positive or negative plate hints at the different types of radioactive decay: alpha, beta, and gamma.

Alpha particles, being positively charged helium atoms, are attracted to the negatively charged plate. Beta particles - high-energy electrons - have a negative charge, thus are attracted to the positive plate. Finally, gamma rays, which are uncharged electromagnetic waves, are not affected by the electric field and pass through unaffected.

This experiment mirrors the studies conducted by Ernest Rutherford where he utilized electrical fields to distinguish and classify these types of radioactive decay.

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Gamma rays are often used to kill microorganisms in food, in an attempt to make the food safer. Some people contend that this irradiated food is actually less safe to eat. Which, if true, would most effectively dispute their idea?

Answers

Irradiated food is shown to not be radioactive, which directly dispels safety concerns. Gamma irradiation safely extends food shelf life by eliminating harmful microbes and is regulated by the FDA to ensure safety. Option B is correct.

The best choice that would contradict the safety concerns about irradiated food is Irradiated food is shown to not be radioactive. This directly addresses the main public concern that consuming irradiated food could lead to exposure to radioactivity.

Gamma irradiation is used as a method to eliminate harmful microbes in food, thereby extending its shelf life and making it safer. The foods subjected to irradiation do not become radioactive themselves because the irradiation process does not involve direct contact with radioactive materials. Furthermore, the Food and Drug Administration (FDA) regulates the sources of radiation and has determined that irradiating food is a safe practice.

Thus, contradicting the misconception, irradiated food retains its nutritional quality and is considered safe for consumption.

Hence, B. is the correct option.

The complete question is:

Gamma rays are often used to kill microorganisms in food, in an attempt to make the food safer. Some people contend that this irradiated food is actually less safe to eat. Which, if true, would most effectively dispute their idea?

A) Irradiated food only emits alpha particles, which are harmless.

B) Irradiated food is shown to not be radioactive.

C) Irradiated food only contributes to background radiation.

D) Irradiated food has molecules that undergo transmutation

what changes could be made to optimize the manufacturing process

Answers

manufacturers can generate new value minimize cost and increase operational stability by focusing on 4 broad areas management Supply Circle product design and value recovery

Fe2O3(s)+3CO(g)⟶2Fe(s)+3CO2(g) How many moles of Fe2O3 are necessary to produce 1.648 mol of CO2?

Answers

Hey there!:

Fe2O3(s) + 3 CO(g) = 2 Fe(s) + 3 CO2(g) 
      ↓                                              ↓
 
1 mole Fe2O3 -----------------------3 moles CO2
moles Fe2O3 ? -------------------- 1.648 moles CO2

moles Fe2O3  = 1.648 * 1 / 3

moles Fe2O3 = 1.648 / 3

=>  0.5493 moles of Fe2O3

hope this helps!

Number of miles of Xe in 12.00g of Xe

Answers

1 mol of Xe has a mass of 131 grams
x mol of Xe has a mass of 12 grams.

1/x = 131/12 Set up proportion from the information above. Cross multiply
131x = 12 Divide by 13`
x = 12/131
x = 0.0916 mol <<<< ====

Just for fun
I don't know if a calculator would even tell me the number of miles in 12 grams of Xe

The diameter is 216 * 10^-12 meters. Maybe.
1 mol of anything is 6.02 * 10^23
0.0912 mols contain x atoms

1/0.0912 = 6.02 * 10^23 / x
x = 0.0912 *  6.02 * 10^23
x = 5.49 * 10 ^ 22 This thing is going to stretch out quite a ways.

1 atom = 312 * 10^- 12 meters.
5.049 * 10^22 = x meters.
x  = 312 * 10^-12 * 5.49 * 10^22
x = 1.7 * 10 ^10 km = 1.07 * 10 ^10 miles We're talking about beyond Pluto. 

I'm sorry I should delete this. If you want to you can. Take my answer for the number of mols. It's likely correct.

To find the number of moles of xenon in a 12.00g sample, divide the mass by the molar mass of Xe, approximately 131.29 g/mol.

This is a basic chemistry problem involving the use of the molar mass of an element to convert from grams to moles.

To find the number of moles, we use the molar mass of xenon, which can be found on the periodic table. Xenon's molar mass is approximately 131.29 g/mol. Therefore, to convert grams to moles, we take the mass of the sample and divide it by the molar mass of the substance:

Number of moles of Xe = Mass of the sample (in grams) / Molar mass of Xe (in grams per mole)

For a 12.00g sample of xenon, the calculation would be:

Number of moles of Xe = 12.00g / 131.29g/mol

What type of forces affects the speed and direction of motion of an object?
A: Balanced forces
B: Unbalanced forces
C: Equal and opposite forces in the vertical plane
D: Equal and opposite forces in the horizontal plane

Answers

I am pretty sure the correct answer is B.
It makes the most sense to me.

The correct Answer Is B

Which is the BEST example of refraction? A) An image appears that is exactly like the real object. B) When put into a container, two mediums do not mix together. C) A laser beam looks bent when it passes through glass blocks. D) A concave lens causes an object to appear larger than its actual size. Eliminate

Answers

Hello,

Here is your answer:

The proper answer tot his question is option C "A laser beam looks bent when it passes through glass blocks".

Your answer is C.

If you need anymore help feel free to ask me!

Hope this helps!

Answer:

C-A laser beam looks bent when it passes through glass blocks

Explanation:

Refraction is the change in the speed of the light when passing from one medium to another with a different refractive index. While changing the medium light appears to change the direction or bent towards the normal -  a perpendicular line to the horizontal line.

The actual yield of a certain reaction is 34.0 g, while the theoretical yield is 50.0 g. Calculate the percent yield.

Answers

The percent yield formula is % yield= (actual yield/theoretical yield) x 100 
34.0g/50.0g= .68 x 100 = 68.0% (theres three sig. figs.)

2 molecules of Acetaldehyde can only be made from which of these alkenes?

Answers

2 molecules of Acetaldehyde is the product of a reaction of an alkene. One way in which alkenes can react to give carbonyl compounds (ketones/aldehydes) is the reaction with ozone, O₃. The ozonolysis of an alkene will result in cleavage of the carbon-carbon double bond and each carbon that was part of the alkene, will now have a double bond to oxygen. Each carbon of the original alkene will now be a carbonyl in the product.

To form 2 molecules of acetaldehyde, we must cleave an alkene that has the same substitution pattern on each side of the alkene so that the carbonyl compounds formed are identical. Therefore, both (E)- and (Z)-2-butene will react with ozone to give acetaldehyde. The scheme provided shows the reaction of both alkenes to give the acetaldehyde. The products are drawn in such a way to show which part of the original molecules they were derived from. However, both reactions do provide identical products.

What is similar between Gregor's life before and after his physical transformation?
A. He still supports his family financially
B. He is still happy that he has a nice famiky who lives him.
C. He still feels bored and unsatisfied with his life.
D. He is still excited to see what will happen each day.

Answers

hello
the answer is c

The similarity between Gregor's life before and after his physical transformation is that,

He is still happy that he has a nice family who lives him.

What is physical transformation and how changes occur?The changes occur only by physically is called physical transformation.

The changes occurs are,

Reactions SkinHeightWeightsexual organbrainTeeth etc.

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Based on the law of conservation of energy, which statement is false?

Answers

The choices, which the user did not provided are these:
A. Energy is lost when machines do not work right.
B. We can not add more energy to the universe.
C. We can not destroyed the energy that exist in the universe.
D. Energy changes from one form to another.
 All the statements give above are true with the exception of option A, which is FALSE. Therefore, A is the correct answer.
The law of conservation of energy states that energy can neither be created nor destroyed, it can only be transformed from one form to another form. This implies that, energy is already present in the environment, man can not add to it neither can man take away from it, man can only change the energy from one type to another type when work is done. This means that, even when machine do not work right, the quantity of energy in the system will still be constant.

Calculate the amount of heat required to heat a 3.2kg gold bar from 29Celsius to 64Celsius. Specific heat capacity of gold is 0.128J/g Celsius .

Answers

Answer is: the amount of heat required to heat the gold is 14336 J.
m(Au) = 3,2 kg · 1000 g/kg = 3200 g.
ΔT = 64°C - 29°C = 35°C.
C = 0,128 J/g·°C.
Q = m(Au) · ΔT · C.
Q = 3200 g · 35°C · 0,128 J/g·°C.
Q = 14336 J = 14,336 kJ.

How many hydrogen atoms are there in 5 molecules of CH2Cl2?

Answers

well in one there is 2. so in five there would be 10 total

The 1 molecule of CH₂Cl₂ contains 2 hydrogen atoms so for 5 molecules of  CH₂Cl₂  there will be 10 hydrogen atoms.

What are molecules?

Molecules are defined as a group of two or more atoms that forms a smallest identifiable unit into which pure substance can be divided and still retain the composition and properties of that substance.

It can also be defined as two or more atoms connected by a chemical bonds.

Atoms can be defined as a smallest unit of ordinary matter that forms a chemical elements.

Thus, the 1 molecule of CH₂Cl₂ contains 2 hydrogen atoms so for 5 molecules of CH₂Cl₂ there will be 10 hydrogen atoms.

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A 1 kg block of copper is hammered into a thin sheet. The length of the copper sheet is 30 cm. What is the mass of the copper sheet? A) 1 kg B) 30 kg C) 1.03 kg D) Cannot be calculated at all

Answers

The mass of copper will remain the same. Therefore, the mass of the copper is equal to 1 Kg. Therefore, option A is correct.

What is law of conservation of matter?

Matter can be transformed form through physical changes and chemical changes from one form to another form, but through all changes, the matter will remain conserved. The same quantity of matter will be there even before and after the change therefore none of the matter is created or destroyed.

According to this law, that mass is never formed nor destroyed, although it may be rearranged in space with the changes associated with it may be changed its form.

For example, the mass of the chemical components before the reaction in chemical reactions is equal to the mass of the components after the reaction.

On hammering the copper mass into the tin sheet, the shape of the copper mass will change but the mass of the metal will remain the same. Therefore, the mass of the copper is equal to 1 Kg.

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Final answer:

The mass of the copper sheet after it has been hammered remains 1 kg, as the mass of an object does not change due to changes in shape or size (option A).

Explanation:

The mass of the copper sheet after it has been hammered into a thin sheet remains the same, regardless of its shape or size alterations. The fundamental principle here is the conservation of mass, implying that the mass of an object doesn't change unless material is added to or removed from it. No such addition or removal of material is mentioned in the question.

Therefore, even after the transformation of the 1 kg block of copper into a copper sheet of length 30 cm, the mass of the copper sheet will be 1 kg, corresponding to option A. This is because the question states that it is the same block of copper that has been reformed, so no mass has been lost or gained in the process.

Which statement accurately describes what happens when water turns to stream in terms of energy?

A. The water releases energy which causes chemical bonds to break, changing water to steam.

B. The water releases energy which causes the water molecules to have less kinetic and potential energy, changing their configuration from liquid to gas.

C. The water absorbs energy which causes chemical bonds to break, changing water to steam.

D. The water absorbs energy which causes the water molecules to have more kinetic and potential energy, changing their configuration from a liquid to a gas.

Answers

When water turns to steam,

D) the water absorbs energy which causes the water molecules to have more kinetic and potential energy changing their configuration from a liquid to a gas.

Hope this helps! :)

C. The water absorbs energy which causes the water molecules to have more kinetic and potential energy, changing their configuration from a liquid to a gas.

I took the quiz and this is the correct answer

Transition metals can be found in Families 3 through 12 on the periodic table. What property do transition metals share?
A.
they do not combine readily with other elements
B.
they do not conduct heat or electricity
C.
they are brightly colored and are often used to make pigments
D.
they are rarely found as single elements in nature

Answers

the answer might be C

Answer:

The correct answer is option C.

Explanation:

Properties of transition metals:

They show variable oxidation states.Most these elements form colored compounds.They have great tendency to form complexes.They also form interstitial compounds with hydrogen , carbon, boron, and nitrogen.Also used in preparation of alloys.Many of these compound shoe catalytic property.
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Here haunted of yore the fabulous Dragon of Wantley; here were fought many of the most desperate battles during the Civil Wars of the Roses; and here also flourished in ancient times those bands of gallant outlaws, whose deeds have been rendered so popular in English song. Such being our chief scene, the date of our story refers to a period towards the end of the reign of Richard I, when his return from his long captivity had become an event rather wished than hoped for by his despairing subjects, who were in the meantime subjected to every species of subordinate oppression. 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The remains of this extensive wood are still to be seen at the noble seats of Wentworth, of Warncliffe Park, and around Rotherham. Here haunted of yore the fabulous Dragon of Wantley; here were fought many of the most desperate battles during the Civil Wars of the Roses; and here also flourished in ancient times those bands of gallant outlaws, whose deeds have been rendered so popular in English song. Such being our chief scene, the date of our story refers to a period towards the end of the reign of Richard I, when his return from his long captivity had become an event rather wished than hoped for by his despairing subjects, who were in the meantime subjected to every species of subordinate oppression. The nobles, whose power had become exorbitant during the reign of Stephen, and whom the prudence of Henry the Second had scarce reduced to some degree of subjection to the crown, had now resumed their ancient license in its utmost extent; despising the feeble interference of the English Council of State, fortifying their castles, increasing the number of their dependants, reducing all around them to a state of vassalage, and striving by every means in their power, to place themselves each at the head of such forces as might enable him to make a figure in the national convulsions which appeared to be impending.According to the author, the king of England during the time in which the story is set was __________.Question 2 options:StephenRichard IWilliam the ConquerorHenry II Describe examples of allopatric radiation in the madagascar-india landmasses and dusky salamanders. when a country has favorable trade balances, its currency is usually stable or rising true or false an expert is someone who que marca de cigarros tien sabor a chocolate what unwinds in multiple areas as DNA is ready replicated? 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