Can somebody help please

Can Somebody Help Please

Answers

Answer 1

Answer:

98 moles of H₂O.

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

2HCl + CaCO₃ —> CaCl₂ + H₂O + CO₂

From the balanced equation above,

1 mole of CaCO₃ reacted to produce 1 mole of H₂O.

Finally, we shall determine the number of mole of H₂O produced by the reaction of 98 moles of CaCO₃. This can be obtained as follow:

From the balanced equation above,

1 mole of CaCO₃ reacted to produce 1 mole of H₂O.

Therefore, 98 moles of CaCO₃ will also react to produce 98 moles of H₂O.

Thus, 98 moles of H₂O were obtained from the reaction.


Related Questions

helppppppppppppppppppppppp

Answers

ITS CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC

3. When the water level is higher outside the flask than inside, is the gas pressure inside the flask higher, lower or the same as atmospheric pressure? (Take your time to think about this. Perhaps think of what it feels like to be 10 feet under water.)

Answers

Answer:

The gas pressure inside the flask is higher than outside the flask ornthe atmospheric pressure.

Explanation:

Given a U-tube manometer with water in between each arm of U-tube. One end is open to the atmosphere while one end is sealed to a flask filled with a gas. The water in the open end of the tube is experiencing a pressure equal to the atmospheric pressure whereas the water at the end sealed of to the flask is experiencing pressure due to the gas in the flask.

If the water level in both arms of the tube are equal, then the pressure due to the gas is equal to atmospheric pressure.

If the water level in the arm sealed to the gas is higher than that of the open end, The gas pressure is less than the atmospheric pressure.

If the water level in the arm sealed to the flask is lower than the open end, the pressure due to the gas is higher than atmospheric pressure.

From the question, when the water level is higher outside the flask than inside, then the gas pressure inside the flask is higher than the atmospheric pressure.

A rock sitting on the surface of the Earth is pushed down deep into the Earth over time and is exposed to tremendous heat and pressure over time. Although the rock does not melt, it does change into a new type of rock.

Answers

Answer:

The rock changes into a Metamorphic rock

Explanation:

Usually, metamorphic rocks start out as some other type of rock, either igneous, sedimentary or even a metamorphic rock. The process of transformation is known as Metamorphism.

When a rock sitting on the surface of the earth is pushed down deep into the earth over time and is exposed to tremendous heat and pressure over time and does not melt, it changes into a metamorphic rock.

A metamorphic rock is formed from a combination of factors such as tremendous heat, high pressure, hot fluids rich in minerals which are all found deep down in the earth.

At which position on the diagram would an apple have the greatest potential energy?

Answers

Answer:

Position 1 because it is the highest from the ground.

Hope this helps!

How many Na atoms are shown in the products?​

Answers

Answer: 6.02214179×1023 atoms

Explanation: I think so

Help e please i give brainlist

Answers

Answer:

c

Explanation:

choose the correct answer.
1 attac
Which substance will not conduct electricity?
A aluminium
B copper
C plastic
D steel
ОА. А

Answers

Explanation:

Covalent compounds (solid, liquid, solution) do not conduct electricity. Metal elements and carbon (graphite) are conductors of electricity but non-metal elements are insulators of electricity. Ionic bonds are the electrostatic attraction between positive and negative ions.

Hope its useful... :-)

Brainliest plz

Convection currents in Earth's core transfer heat and material to the surface.

True or False?

Answers

Answer: False

Explanation: The plate tectonics  move due to convection currents of the mantle; the cooler upper mantle descends while the hotter lower mantles ascend. The heat that drives these convection currents emanated from the core of the earth (not the sun).

Help me please!

Main-block transition metals, such as iron, make good building materials for all of the following reasons EXCEPT____.

A. Resistance to corrosion
B. Insulation
C. Strength
D. High density

Answers

the answer is most likely d have a great day

Which of following is true of liquids?
Group of answer choices

The particles move at a high rate of speed

The particles have a medium amount of kinetic energy and slide past one another.

The particles vibrate in place.

The particles have a fixed volume and shape

Answers

Answer:

The particles have a medium amount of kinetic energy and slide past one another

Explanation:

If particles move at a high rate of speed its gas, and if they vibrate in place and they have a fixed volume and shape its probably a solid. So a medium amount of kinetic enery is correct.

In your opinion,what will happen to a person who has sustained injury in the spinal cord?​

Answers

Answer: I think they get will paralysed and some of the impulses may not be able to get through.

Explain the difference, with sketches, between the titration curves of monoprotic acid and a triprotic acid.

Answers

Answer:

A monoprotic acid has only one equivalence point in a titration curve while a triprotic acid has three equivalence points.

Explanation:

Monoprotic acids, HA, are acids that are able to donate one proton per molecule during the process of ionization or dissociation as shown below:

HA ----> H⁺ + A⁻

A triprotic acid is a polyproprotic acid, that is acids that can donate more than one proton per molecule during ionization. a triprotic acid can donate three protons per molecule during the process of ionization. The dissociation of a triprotic acid is shown below;

H₃A -----> H₂A⁻ + H⁺

H₂A⁻ ----> HA²⁻ + H⁺

HA²⁻ -----> A³⁻ + H⁺

The value Ka, is known as the acid dissociation constant. It is found by looking at the equilibrium constant for the dissociation of the acid. The higher the Ka, the more the acid dissociates

A titration curve is the plot of the pH of the analyte solution versus the volume of the titrant added as the titration progresses.

In a titration curve in which base is added to acid, the pH rises slowly until the equivalent point at which point the pH remains constant before it begins to rise again on the addition of more base.

In a titration curve of a monoprotic acid, there is only one region in which the equivalence point is obtained corresponding to the point of acid of dissociation of all its protons.

In the titration curve of a triproprotic acid, three equivalent points are obtained corresponding to the point of dissociation of each of three protons of the triprotic acid.

The titration curves are shown below

Lodestone is magnetic. How might you identify weather a mineral sample might be lodestone
A. By examining how it bends
B. By determining if it contracts electricity
C. By determining if it glows under ultraviolet light
D. By determining if it attracts metal objects

Answers

D because it’s magnetic

Answer: D

Explanation:

what is the molecular shape of N2O2?

Answers

Answer:

If you're just looking at the Lewis Structure from the perspective of the octet rule, it does appear that the structure is correct. Dinitrogen always has a lone pair of electrons which could conceivably be used for dative bonding as you suggest. So from that perspective there appears to be nothing wrong at all - other than that it doesn't exist in nature in this way.

Explanation:

Which of the following pH values is the most acidic? *

a. 1
b. 3
c. 5
d. 14

Answers

A.1

Explanation. The lower the number the more acidic
A.1

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

what provides support and transportation of materials for a plant​

Answers

Answer: Xylem is the tissue responsible for supporting the plant as well as for the storage and long-distance transport of water and nutrients, including the transfer of water-soluble growth factors from the organs of synthesis to the target organs.

Explanation:

Answer:

Xylem is the tissue responsible for supporting the plant as well as for the storage and long-distance transport of water and nutrients, including the transfer of water-soluble growth factors from the organs of synthesis to the target organs

Explanation:

What is a wind turbine used for?
Please help

Answers

Answer:

it used to generate mechanical power or electricity

A wind turbine is used to power towns are buildings

The slate tabletops in the schools science lab are made from rocks that were under very high temperature and pressure. In which category of rock can slate be placed?

A. Igneous
B. metamorphic
C. sedimentary
D. volcanic

Answers

Answer:

B. metamorphic

Explanation:

Rocks formed under high heat and pressure is essentially the definition of metamorphic rock :)

The answer is B. Correct me if i’m wrong.

Which of the following is a product in the reaction described by the word equation below?
iron + copper(II) sulfate ----------> iron(II) sulfate +copper

Answers

Answer:

Please answer my question

1. Which one does not belong the the group?" helium iodine radon or krypton

Answers

Answer:

Iodine

Explanation:

Helium, Radon, and Krypton are all in group 18 but Iodine is not

(it's in group 17)

:)

compare the wavelengths of different colors to explain why the flashing light color used in airplanes or at the top of the buildings is the red color *

Answers

red because it has the highest visibility from a far distance

What is the answer:
C4H8+H2=​

Answers

Answer is going to be C4H10

2. (1:25) How much does the moon pull on the Earth?
A. More than the Earth's pull on the moon
B. Less than the Earth's pull on the moon
C. Equal to the Earth's pull on the moon

Answers

Answer:

a. more than the earth pull on the moon sorry if false

Black hair (B) is dominant to brown hair (b). Cross a black rabbit and a brown hair. The black rabbit had a brown haired mother.

What is the punnet square for this and the genotype and phenotype for this.​

Answers

Answer:

Genotypic ratio = 1 Bb: 1 bb

Phenotypic ratio = 1 black rabbit : 1 brown rabbit

Explanation:

This question involves a gene coding for hair color in rabbits. The allele for Black hair (B) is dominant to the allele for brown hair (b).

According to this question, a black rabbit whose mother is brown haired (bb) is crossed with a brown hair rabbit. This means that the black rabbit will have a genotype 'Bb' while the brown rabbit will have a genotype 'bb'. Each parent will produce the following gametes:

Bb - B and b

bb - b and b

Using these gametes in a punnet square (see attached image), the following proportion of offsprings will be produced:

Bb, Bb, bb and bb

This means that the;

Genotypic ratio = 1 Bb: 1 bb

Phenotypic ratio = 1 black rabbit : 1 brown rabbit

7. Some of the following sublevels do not exist. Cross out the ones that are not real.
1s 3d 4p 2d 3f 5s 6p 1p 2s 5g 4f 1f

Answers

Answer:

1f 3f 5g 1p 2d

Explanation:

There is only 4f and 5f orbitals.

G is not an orbital.

P orbital starts with 2p

D orbital starts with 3d

Which solubility curve on the right best represents the data table on the left?
DO NE
Solubility of Sugar in Water
Solubility of Sugar in Water
300
Temperature
(°C)
Sugar Dissolved
(grams)
250
200
0
89
150
Sugar per 100g H20
30
110
100
144
50
60

0
0
90
208
100
20 40 60 80
Temperature (°C)
Answer: Blue curve

Answers

Answer:

blue curve on edge :)

Explanation:

which substances corrode copper?​

Answers

The presence of oxidizing acids; heavy-metal salts, sulfur, and ammonia; and a number of sulfur and ammonia compounds can cause corrosion to set in. Water that comes from a well is much more likely to contain these materials and put copper lines in jeopardy—but it can occur in the civic water system as well.

Copper corrodes at insignificant rates when used in areas with unpolluted air, non-oxidizing acids, and water. However, it happens more rapidly with the presence of road salt, ammonia, sulfur, oxidizing acids

Acidic substances react with the surface of copper, causing it to tarnish and corrode almost instantly. This corrosion is highly soluble, leading to the presence of toxic copper salts in the food. This is why it is not recommended to use copper vessels for foods high in acidity, such as milk, wine, or vinegar.

Select odd one out.
I) O
II) Na
III) Cu
IV) Ag

Answers

Explanation:

0 is the odd one...............

and rest are metals and they lose electron and 0 gain electron and is non metal

I) O , is the odd one out because Na, Cu , Ag are all metals while O is a nonmetal ( look from periodic table )

whoever can help me will get the brainliest! Please

Answers

Answer:

Food chain, in ecology, the sequence of transfers of matter and energy in the form of food from organism to organism. Food chains intertwine locally into a food web because most organisms consume more than one type of animal or plant. ... In a predator chain, a plant-eating animal is eaten by a flesh-eating animal.

Explanation:

How much pressure does an elephant with a mass of 2200 Kg and a total footprint area of 4500 cm2 exert on the ground?

Answers

Answer:

47911.1 pa

Explanation:

The SI base unit of pressure is pascal, which is N/m^2.

2200 kg is 2200*9.8=21560 N, and 4500 cm^2=4500/10000=0.45 m^2.

So the total pressure exerted on the ground (!!) is 21560/0.45= 47911.1 Pa.

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