Mark and Amanda conduct the same investigation as Nguyen, but they use four rocks. They test the same three rocks as Nguyen but add one more rock that has the same color and density as limestone. However, the rock doesn't produce bubbles when acid is added to it. Explain how the mineral composition of this rock compares with that of limestone?

Answers

Answer 1

Answer:

The Rock does not contain carbonate in it.

Explanation:

Limestone(CaCO_3) when reacts with a acid produces carbon dioxide, which comes out as bubbles in the solution. It means the 4th rock does not have carbonate in it. Carbonate minerals are unstable in contact with hydrochloric acid. When acid begins to effervesce (fizz) on a specimen. These bubbles confirms the presence of carbonate in mineral.

Answer 2

Answer:

no,exept y and z are similar

Explanation:

litterly what it says '-'


Related Questions

The concentration of KIO3 in solution A is 0.04 M. Calculate the number of moles of potassium iodate in 1 mL of this solution.

Answers

Answer:

Number of moles of KIO₃ =  4.0×10⁻⁵ mol

Explanation:

Given data:

Concentration of solution = 0.04 M

Volume of solution = 1 mL

Number of moles of KIO₃ = ?

Solution:

Molarity = concentration

Molarity = number of moles / volume in L

We will convert the volume into L.

1 mL×1 L /1000 mL

0.001 L

Now we will put the values in formula,

0.04 M = number of moles / 0.001 L

Number of moles = 0.04 M ×0.001 L

Number of moles = 4.0×10⁻⁵ mol

The diagram shows a parent hydra with an offsprinly.
Offspring
Which statement best explains why the offspring has no genetic variation
from the parent?
A. It received genes for producing traits different from the parent's.
B. It received a mix of genes from two different parents.
O C. It received genes that are exactly the same as the parent's genes.
O D. It received chromosomes with many different genes.

Answers

Answer:

C. It received genes that are exactly the same as the parent's genes

In asexual reproduction in hydra,offspring has no genetic variation from the parent because it received genes that are exactly the same as the parent's genes.

What is asexual reproduction?

Asexual reproduction is a type of reproduction where the offsprings are  not produced by the combination of genetic material of two individuals which are of different sexes rather they are produced by a single parent.

It is the  not the dominant form of reproduction in living beings.Here, the offsprings are identical to their parents as there is no recombination of genetic material.It is observed in both unicellular or multicellular organisms.

There is no fertilization or gamete formation taking place.Types of asexual reproduction include budding, binary fission,fragmentation,etc.

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Help me please O w O

Answers

Answer:

42 km/h

Explanation:

The element fluorine has an atomic number of
a. 10
b. 9
c. 19
d. 28

Answers

Answer:

B.9

Explanation:

It has a atomic number of 9

2. Explain how conduction, convection and radiation all contribute to heating the Earth's
surface and atmosphere.

Answers

Answer: Conduction, radiation and convection all play a role in moving heat between Earth's surface and the atmosphere. Since air is a poor conductor, most energy transfer by conduction occurs right near Earth's surface. ... During the day, sunlight heats the ground, which in turn heats the air directly above it via conduction.

HOPE THIS HELPS

what volume (in L) of ethane (C2H6) will be required to produce 42.5 L of carbon dioxide in the reaction below?

2C2H6(g)+7O2(g)->4CO2(g)+6H2O(g)

Answers

Answer:

21.25

Explanation:

A pile of wind blown sand is called a A. Delta B. Groin C. Meander D. Dune

Answers

Answer:

I am pretty sure its called a sand dune

Explanation:

Here is a model that shows key information about Earth
and the Sun
Direction of
Earth's rotation
Axis
Which statement best explains the pattern of daytime and nighttime on
Earth?
A. The Sun must revolve around Earth once every 24 hours
B. Earth's axis of rotation must tilt back and forth every 12 hours.
C. Earth must complete one rotation on its axis every 24 hours.
D. The Sun's energy must come from a different direction every 12
hours

Answers

The statement information about earth and the sun direction of earth's rotation axis best explains the pattern of daytime and night-time on earth is " earth must complete one rotation on its axis every 24 hours".

What is sun?

The sun was composed of incredibly hot gases, as well as then it heats as well as illuminates the entire solar system.

What is earth?

The earth was referred to as a "one-of-a-kind" planet since that is the only one on the planet with ideal circumstances for life.

Day though night are caused by the Earth's diurnal revolution. From west to east, the earth rotates on its axis for around 24 hours. As a result, the sun appears to rotate from east to west, resulting in sunset and sunrise. except for polar is, which remains stationary in the north polar sky along the earth's axis, all those other stars move from east to west.

Therefore, the correct answer will be C.

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Answer:

THE ANSWER IS (C.)

Explanation:

And this one please thank you.

Answers

Answer:

E

Explanation:

Look at bottom numbers.

90 → 88 + x

it means,

90=88+x

hence x = 2

it is also valid for top numbers.

230=226+y

y = 4

4. How many moles in 2.0 x 1023 atoms of H2O?
here.

Answers

Answer:

0.33 moles

Explanation:

to find the number of moles,

moles = number of atoms / avogadro's number ie 6.02 x [tex]10^{23}[/tex]

moles = 2.0 x [tex]10^{23}[/tex] / 6.02 x [tex]10^{23}[/tex]

moles = 0.33 mol

MULTIPLE CHOICE QUESTION

Electrons fill in energy levels in which of the
following ways?

1.Lowest energy level first, so it fills in the inside
rings first

2.Lowest energy level first, so it fills in the
outside rings first

3.Highest energy level first, so it fills in the inside
rings first

4.Highest energy level first, so it fills in the outside
rings first

Answers

Answer:

I think the answer is 3. Highest energy level first, so it fills in the inside rings first

Electrons occupy the lower-energy orbitals first, then go on to fill the next higher-energy orbital until all of the electrons contain been placed.

Which energy levels do electrons fill first?

Most of the time, electrons occupy the lower-energy orbitals first, then go on to fill the next higher-energy orbital until all of the electrons have been positioned.

The lowest energy level is always added to initially until it has as many electrons as it can have. The following higher energy level is then filled with electrons, and so on.

The lowest energy level is always filled up with additional electrons first, up to the point where that level can hold no more, and then further electrons are added to the next higher energy level, and so on. A level's total number of orbitals determines how many electrons can be present at that energy.

Therefore, the correct answer is option 3. Highest energy level first, so it fills in the inside rings first.

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Pls predict and balance the following Chemical equations 30points (5 per question)
Will mark Brainliest

1. Na2(SO4) (aq) + Ba(NO3)2(aq) -->

2. Na(NO3)(aq) + NH4Cl(aq) -->

4. ZnCl2 (aq) + K (SO4) (aq) -->

5. ZnCl2 (aq) + Na2S (aq) -->

6. Na(C2H3O2) (aq) + Ag(NO3) (aq) -->

Answers

Answer:

1. Na2SO4 + Ba(NO3)2 → NaNO3 + BaSO4

2. NaNO3 + NH4Cl → NaCl + NH4NO3

4. Sorry, I don't know

5. Refer to the attachment..

6. NaC2H3O2(aq) + AgNO3(aq) = NaNO3(aq) + AgC2H3O2

Hope it can help you and please mark me as a brainlist...

[tex] \huge{\blue{Thank \: you}}[/tex]


1. Na2(SO4) (aq) + Ba(NO3)2(aq) -->
Answer: NaNO3 + BaSO4 - Chemical Equation Balancer.

2. Na(NO3)(aq) + NH4Cl(aq) -->
Answer: NaNO3 + NH4Cl → NaCl + NH4NO3 - Balanced equation

4. ZnCl2 (aq) + K (SO4) (aq) -->
Answer: (This is an impossible reaction)

5. ZnCl2 (aq) + Na2S (aq) -->
Answer: no reaction occurs

6. Na(C2H3O2) (aq) + Ag(NO3) (aq) -->
Answer: NaC2H3O2(aq) + AgNO3(aq) = NaNO3(aq) + AgC2H3O2

(I’m not sure if all are right, I’m sorry but this is the best I could do. Hope it helps you.)

which part of this chemical process requires energy WILL GIVE BRAINLIEST

Answers

Answer:

Its c hope this helps ;)

Explanation:

Answer:

Answer is D

Explanation:

Am smort

What happens when the compound Mgo is formed? (5 points)
Oxygen transfers two electrons to magnesium.
Oxygen receives two electrons from magnesium.
Magnesium forms an ion with -1 charge; oxygen forms an ion with +1 charge.
Magnesium forms an ion with +1 charge; oxygen forms an ion with -1 charge.

Answers

Answer:

Oxygen receives two electrons from magnesium.

Explanation:

Hello!

In this case, considering the chemical reaction by which magnesium oxide is produced:

[tex]2Mg+O_2\rightarrow 2MgO[/tex]

In that case, if we show up the oxidation states, we have:

[tex]2Mg^0+O_2\rightarrow 2Mg^{2+}O^{2-}[/tex]

In such a way, since metals, like magnesium, have the capacity to lose electrons, rather than receive them, we infer why it turns out with +2 rather than -2; thus, we the correct answer is "oxygen receives two electrons from magnesium." because it results with -2 in MgO.

Best regards!

Answer:

Oxygen receives two electrons from magnesium.

Explanation:

If we react 5.4g of sodium chloride with an unknown amount of fluorine gas, we produce 4.9g of sodium fluoride and 3.7g chlorine gas. How much fluorine was consumed in the reaction?

Answers

Answer:

4.43 g

Explanation:

The reaction between sodium chloride and flourine gas is given as;

NaCl + F2 --> NaF + Cl2

From the stochiometry of the equation;

1 mol of NaCl reacts eith 1 mol of F2 to form 1 mol of NaF and Cl2

Mass of 1 mol of F2 = 38g

Mass of 1 mol of sodium flouride, NaF = 42g

This means 38g of flourine reacted with NaCl to form 42g of NaF

xg of F2 would form 4.9g of NaF

38 = 42

x = 4.9

x = 4.9 * 38 / 42

x = 4.43 g

what is the difference between polar and non-polar

Answers

Answer:

Polar molecules occur when there is an electronegativity difference between the bonded atoms. Nonpolar molecules occur when electrons are shared equal between atoms of a diatomic molecule or when polar bonds in a larger molecule cancel each other out.

Explanation:

Polar molecules occur when there is an electronegativity difference between the bonded atoms. Nonpolar molecules occur when electrons are shared equal between atoms of a diatomic molecule or when polar bonds in a larger molecule cancel each other out.


The electron domain and molecular geometry of FO2 is?
A.tetrahedral,trigonal planar
B.tetrahedral, bent
C.trigonal pyramidal, linear
D.trigonal pyramidal, seesaw

Answers

Answer:

C.

Explanation:

What are the products of the combustion of a hydrocarbon?
carbon and oxygen
carbon dioxide and water
carbon and hydrogen
carbon dioxide and hydrogen

Answers

Answer:

I think carbon and hydrogen

Answer:

Its carbon and hydrogyen

Explanation:

got it right on edge

pls help me i dont understand this question

Answers

Answer:

Explanation:

I'm not sure, don't hate me if i'm wrong but i think the third one is the answer.

Answer:

The question is asking what does not have anything to do with the bond formation.

How many grams of zinc chloride will be produced from 55. grams of zinc assuming hydrochloric acid is available in excess

Answers

Answer:

Mass = 114.5 g

Explanation:

Given data:

Mass of zinc = 55 g

Mass of ZnCl₂ produced = ?

Solution:

Chemical equation:

Zn + 2HCl     →      ZnCl₂ + H₂

Number of moles of Zn:

Number of moles = mass/molar mass

Molar mass of Zn = 65.4 g/mol

Number of moles = 55 g/  65.4 g/mol

Number of moles = 0.84 mol

Now we will compare the moles of Zn and zinc chloride,

               Zn           :          ZnCl₂

                1             :           1

              0.84        :          0.84

Mass of ZnCl₂:

Mass = number of moles × molar mass

Molar mass of ZnCl₂= 136.3 g/mol

Mass =  0.84 mol × 136.3 g/mol

Mass = 114.5 g

1.which electromagnetic wave has the; longest wavelength, lowest speed, highest frequency, and greatest energy ?

2. Which visible light wave has the; longest wavelength, lowest speed, highest frequency, and greatest energy?

(Please Help I would gladly appreciate it 100 points will be given)

Answers

Radio waves infrared rays, visible light, ultraviolet rays, X-rays, and gamma rays are all types of electromagnetic radiation. Radio waves have the longest wavelength, and gamma rays have the shortest wavelength.

what volume of carbon dioxide will be collected at stp when 25.6 g of calcium carbohydrate undergoes decomposition? Balanced reaction: CaCO2 -> CaO + CO2

Answers

Answer:

V = 5.74 L

Explanation:

Given data:

Volume of carbon dioxide produced = ?

Temperature and pressure = standard

Mass of calcium carbonate = 25.6 g

Solution:

Chemical equation:

CaCO₃      →        CaO + CO₂

Number of moles of calcium carbonate:

Number of moles = mass / molar mass

Molar mass of calcium carbonate = 100 g/mol

Number of moles = 25.6 g/ 100 g/mol

Number of moles = 0.256 mol

Now we will compare the mole of calcium carbonate with carbon dioxide.

                       CaCO₃           :            CO₂

                            1                :             1

                         0.256          :         0.256

Volume of  CO₂:

PV = nRT

R = general gas constant = 0.0821 atm/L / mol.K

By putting values,

1 atm× V = 0.256 mol × 0.0821 atm/L / mol.K× 273.15 K

V = 5.74 atm/L / 1 atm

V = 5.74 L

Much of the light that a black cloth absorbs is changed to heat. True or false​

Answers

Answer:

True

Explanation:

Hope this helps you complete the quiz :)

What is the volume of 0.128 mol of nitrogen dioxide gas at STP?

A) 0.00571 L
B) 2.87 L
C) 5.89 L
D) 132 L

Answers

Answer:

  B)  2.87 L

Explanation:

A mole of any gas at STP has a volume of about 22.412 liters. So, 0.128 moles of gas will have a volume of ...

  0.128 · 22.412 L ≈ 2.87 L

Answer:

B. 2.87 L

Explanation:

the volume of 0.138 mol of nitrogen dioxide gas at STP is equal to...2.87 L/litre

IF YOU COME THEN YOU WILL GET BRAINLIEST HURRY!!!!
Describe how wind, water, ice and gravity move soil through erosion below.

Answers

Answer:

It's big brain time

Explanation:

Weathering is the process of breaking rocks into sediment while erosion is the process that wears away this sediment and other materials and moves them from one location to another.  Agents of erosion include gravity, glaciers, wind, and water.  Erosion only occurs when these agents have enough energy.  The moment agents of erosion lose their energy and momentum they deposit their load.  This process is known as deposition.  The load is what the agent is carrying.  As agents of weathering lose their energy, the heavier sediment is dropped.  As the energy is lost, gravel, then sand, then silt, and then clay are deposited, due to their respective masses.

Mass movement, sometimes referred to as mass wasting, is what we call the movement of surface material due to gravity, water, wind, and ice.  There are five main types of mass movements: falls, creep, flows, slides, and slump.

A certain atom has 50 protons and 69 neutrons. Which statement(s) below are true about this atom? Choose ALL that apply.
this atom is an atom of thulium (Tm)
m this atom has a mass of 69 amu
this atom is an isotope of tin-120
m this atom has an atomic number of 50

Answers

Answer:

D.) This atom has an atomic number of 50

Explanation:

A is wrong because we determine the type of atom by their number of protons, not the number of neutrons. This makes the atom Tin (Sn).

B is wrong because both protons and neutrons contribute to the weight of an atom, not just neutrons

C is wrong because the correct name for this isotope would be tin-119, which is calculated by adding the protons and neutrons

D is correct because isotopes of the same element always share the same atomic number

The number of valence electrons in lithium is 2.
TRUE
FALSE

Answers

Answer:

False

Explanation:

Ok then what im bored

The following diagram shows the bonds that make up potassium acetate.

Answers

Answer:

6

Explanation:

ye

Calcium is a metal that is part of bone. it has several naturally-occurring
isotopes. Calculate the average atomic mass. Ca-40 39.96amu 96.941%,
Ca-42, 41.96 amu 0.647%, Ca-43 42.96amu 0.135% Ca-44 43.96 amu
2.086%, Ca-48 47.95amu 0.187% *
pls help

Answers

The average atomic mass of Ca : 43.943 amu

Further explanation

Given

Isotopes of Ca

Required

The average atomic mass

Solution

Isotopes are elements that have the same Atomic Number (Proton)

Atomic mass is the average atomic mass of all its isotopes

Avg atomic mass = m1.%m1 + m2.%m2....mn.%mn

m1 = isotope 1

m2 = isotope 2

% = abundance of the elements in nature

Input the value :

avg atomic mass = 39.96 x 0.96941 + 41.96 x 0.0647+42.96 x 0.0135 + 43.96 x 0.02086 + 47.95 x 0.0187

avg atomic mass =43.943 amu

Which set of the below elements are in the same period.

1. Li, Be, C, O

2. H, Li, Be

3. F, CI, Br, I

4. H, He, Li, Be

Answers

1

Explanation:

because they period two

Answer:

1

Explanation:

Other Questions
Help Me Please I will give brainliest if correct! Pls help, if u finish this then go on comment then ill give u like probs 100 pts or som tyonly answrr i d u know the answerfrom U.S. Army Center of Military History) In late 1944, during the wake of the Allied forces successful D-Day invasion of Normandy, France, it seemed as if the Second World War was all but over. On Dec. 16, with the onset of winter, the German army launched a counteroffensive that was intended to cut through the Allied forces in a manner that would turn the tide of the war in Hitlers favor. The battle that ensued is known historically as the Battle of the Bulge. The courage and fortitude of the American Soldier was tested against great adversity. Nevertheless, the quality of his response ultimately meant the victory of freedom over tyranny.Early on the misty winter morning of Dec. 16, 1944, more than 200,000 German troops and nearly 1,000 tanks launched Adolf Hitlers last bid to reverse the ebb in his fortunes that had begun when Allied troops landed in France on D-Day. Seeking to drive to the coast of the English Channel and split the Allied armies as they had done in May 1940, the Germans struck in the Ardennes Forest, a 75-mile stretch of the front characterized by dense woods and few roads, held by four inexperienced and battle-worn American divisions stationed there for rest and seasoning.After a day of hard fighting, the Germans broke through the American front, surrounding most of an infantry division, seizing key crossroads, and advancing their spearheads toward the Meuse River, creating the projection that gave the battle its name.Stories spread of the massacre of Soldiers and civilians at Malmedy and Stavelot, of paratroopers dropping behind the lines, and of English-speaking German soldiers, disguised as Americans, capturing critical bridges, cutting communications lines, and spreading rumors. For those who had lived through 1940, the picture was all too familiar. Belgian townspeople put away their Allied flags and brought out their swastikas. Police in Paris enforced an all-night curfew. British veterans waited nervously to see how the Americans would react to a full-scale German offensive, and British generals quietly acted to safeguard the Meuse Rivers crossings. Even American civilians, who had thought final victory was near were sobered by the Nazi onslaught.But this was not 1940. The supreme Allied commander, Gen. Dwight D. Eisenhower rushed reinforcements to hold the shoulders of the German penetration. Within days, Lt. Gen. George S. Patton Jr. had turned his Third U.S. Army to the north and was counterattacking against the German flank.But the story of the Battle of the Bulge is above all the story of American Soldiers. Often isolated and unaware of the overall picture, they did their part to slow the Nazi advance, whether by delaying armored spearheads with obstinate defenses of vital crossroads, moving or burning critical gasoline stocks to keep them from the fuel-hungry German tanks, or coming up with questions on arcane Americana to stump possible Nazi infiltrators.At the critical road junctions of St. Vith and Bastogne, American tankers and paratroopers fought off repeated attacks, and when the acting commander of the 101st Airborne Division in Bastogne was summoned by his German adversary to surrender, he simply responded, Nuts!Within days, Pattons Third Army had relieved Bastogne, and to the north, the 2nd U.S. Armored Division stopped enemy tanks short of the Meuse River on Christmas. Through January, American troops, often wading through deep snow drifts, attacked the sides of the shrinking bulge until they had restored the front and set the stage for the final drive to victory (on Jan. 25, 1945).Never again would Hitler be able to launch an offensive in the west on such a scale. An admiring British Prime Minister Sir Winston Churchill stated,This is undoubtedly the greatest American battle of the war and will, I believe, be regarded as an ever-famous American victory.Indeed, in terms of participation and losses, the Battle of the Bulge is arguably the greatest battle in American military history.gimme sellf assesment on this -. The ratio of boys to girls at a birthday party is4:5. If there are 35 girls, how many boys arethere? how do i find the mean and median for this line of numbers? 42,51,64,55,51,54,51,69 URGENTTTT!! According to "The Miracle of Life" article, by 22 weeks, the lungs aren't developed enough to live outside of the womb.True or false? Help Me Out Plz KAhhhhhEnterrrrrrrr Given f(x) = -4x + 7 and g(x) = x3, choosethe expression for (fg)(x). What makes the climate different in the different biomes earth? draw a number line with the solution to :1/4 - 1/2 simplify. enter the answer in the box. PLEASE I NEED IT ASAP Savannah shoped 98 glass bowls to her mother. If she divided the bowls equally among8 boxes, how many bowls did Savannah put in each box? Bridget and Caroline win some money and share it in the ratio 5:3. Bridget gets 65. Howmuch did they win in total? Hey Im just wondering if its d 4? Please tell me if Im right Which of these curves on the graph below could indicate a function? Conjugate tre for the subject given.nousteztestonssommes Choose THREE human activities that have a negative impact on thebiodiversity within Amazon rainforests.Acaptive breeding of organismsBchange in the land-use patternexploitation of available resourcesDIntroduction of conservative measuresEintroduction of invasive speciesrestoration of degraded land What do you think John Locke means when he says that actions speak louder than words? You work as a taxi driver. you earn an average of $75 in tips everyday.Which graph best represents the relationship between time and the cumulative total of your tips? Solve by writing a proportion.Elena runs the same distance every day. In B days, sheran 12 miles. How far will she run in 7 days? Show yourwork.Can you also do a proportion for me thanks. 12. The follicle-stimulating hormoneA. stimulates gonads to develop.B. stimulates secretion of sex hormones.C. stimulates ovulation in females.D. is sometimes called the ovulating hormone.