What mass of sodium chloride (nacl) forms when 7.5 g of sodium carbonate (na2co3) reacts with a dilute solution of hydrochloric acid (hcl)? type in your answer using the correct number of significant figures. na2co3 2 hcl → 2nacl h2o co2 7.5 g na2co3 = g nacl

Answers

Answer 1

Answer:

8.3 g of NaCl

Explanation:

Edge 2022

Answer 2

Answer:

8.3 g NaCl

Explanation:

Its right just type it in


Related Questions

What does a high number on the pH scale say about a solution?
OA. The solution is basic.
OB. The solution is hot.
C. The solution is neutral.
OD. The solution is acidic.

Answers

Explanation:

A is cortect answer dsfa

Ethanoic acid reacts with ethanol to form an ester and water. How many moles of ethanoic acid are required to produce 0.5 mol of the ester? (A) 0.05 (B) 0.5 (C) 1 (D) 2​

Answers

0.5 moles of ethanoic acid are required to produce 0.5 mol of the ester , Option B is the right answer.

What is esterification reaction ?

The reaction in which a carboxylic acid combine with an alcohol to form ester and water is called esterification reaction.

It is given in the question that

Ethanoic acid reacts with ethanol to form an ester and water

C₂H₅OH  +  CH₃​COOH  →   CH₃COOH  +  H₂O

The moles of ethanoic acid required to produce 0.5 mole of ester.

In the following reaction it can be seen that the mole fraction of ethanoic acid to ester is 1: 1

Therefore 0.5 mole of ethanoic acid will be required to produce 0.5 mol of ester.

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the pressure of a gas depends on the ____ and ____ of the gas.

Answers

Answer:

Temperature and Volume

Explanation:

PV = n R T

P = n R T / V      pressure depends on the temperature and volume

The pressure of a gas depends on the temperature and volume of the gas.

Ideal gas equation

PV = nRT

Where

P is the pressureV is the volumen is the number of moleR is the gas constantT is the temperature

From the equation given above, we obtained the following:

PV = nRT

Divide both sides by V

P = nRT / V

R is constant and n = 1

P = T / V

Thus, we can see that the pressure (P) is dependent on the temperature (T) and the volume (V)

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An atom is neutral because it has the same number of electrons as it has???????????????????????????????????????????????????????????

Answers

Answer:

protons

Explanation:

the protons and electrons of an element are the same amount however the neutrons are a different amount

Answer is protrons
Equal number of electrons and protrons makes it neutral

PLS HELP ME ASAP ILL GIVE BRAINLIEST
Which statement best describes how a Geiger counter works?

Select one:
a. Water vapor condenses along a path traveled by ionizing radiation.
b. Particles ionized by radiation cause black streaks to appear on sensitive photographic paper.
c. Radioactive particles ionize argon gas in a tube and the resulting electric current is amplified and heard as a clicking sound.
d. A material sensitive to radioactive emissions glows when mixed with a radioactive substance.

Answers

C radioactive particles

Answer:

the answer is c

Explanation:

c. Radioactive particles ionize argon gas in a tube and the resulting electric current is amplified and heard as a clicking sound.

The empirical formula for a compound shows the symbols of the elements with subscripts indicating the
Select one:
A) actual numbers of atoms in a molecule.
B)numbers of moles of the compound in 100 grams.
C)smallest whole-number ratio of atoms.
D) atomic masses of each element

Answers

Answer:

smallest whole number ratios of atoms

Two persons are not equally strong. One is weaker than another. They are going to carry a wooden coat poole Suggest them the w a way to cargy. a wooden pole. In such a way stronger person needs to apple-apply more effort and the weakes person need to apply less force. Explain with scientific reason.​

Answers

Answer:

The two men can arrange a position such as the center of gravity must be nearer the stronger man and the weaker man must be away from the center of gravity of the wooden pole.

In plain language, the stronger man must be near the center while the weaker man must be away from the center of the wooden pole.

Explanation:

I am sachhyam lama

from nepal

my teacher wrote this answer thats why I wrote the answer

Specific heat capacity is measured in _____.

Answers

Answer: Specific heat capacity is measured in J/g℃.

Explanation:

The specific heat capacity is the amount of heat required to raise the temperature of one gram of a substance by one degree Celsius.

Another thing you should know about specific heat capacity is its formula. The formula of specific heat capacity is: C= [tex]\frac{q}{m}[/tex]×ΔT

In the formula, q is the heat gained or lost by the system (measured in joules), m is the mass of the sample in grams, and △T is the temperature's change in ℃.

I hope this helps! Pls mark brainliest!! :)

1
2
3
4
5
6 7 8 9 10
If the density and volume of an object is known, what can also be found?
the mass of the object
O the shape of the object
the size of the object
the thickness of the object

Answers

Answer: the mass of the object

Explanation: To find density, the equation d= m/v is needed where m= mass and v= volume

Ripening is a _______________ and spoiling is a ______________.
A. Chemical reaction, chemical reaction.
B. Physical reaction, chemical reaction.
C. Physical reaction, physical reaction.
D. Chemical reaction, physical reaction.

Answers

Answer:

A

Explanation:

The answer to this question is A. Both ripening and spoiling are chemical reactions.

Spoiling is a chemical reaction because spoiled food has bad smell and taste and it changes colour too.

Ripening of fruits is a chemical change. For example the colour could change as well as the texture.

Answer:

option a) chemical reaction, chemical reaction.

Explanation:

Changes in which new substances with different properties are formed are called chemical changes. Cooking of food, burning of substances are chemical changes as entirely new substances are formed. Burning of a candle wax releases carbon dioxide and water vapour (new substances). in here ripening and spoiling is a change that cannot be reversed which makes it a chemical change.

We know the sun is primarily made from hydrogen and helium on the basis of its:

Answers

We know the sun is primarily made from hydrogen and helium on the basis of its spectrum.

What is Sun's spectrum?

Sun's spectrum refers to the light of the Sun whose wavelength spectra can be used to identify atomic composition.

Thus spectrum (Sun's spectrum) initiates with the red light (700 nm) and ends with the blue (380 nm).

In conclusion, we know the sun is primarily made from hydrogen and helium on the basis of its spectrum.

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When molten magma rises to the surface it cools ________, forming ________ igneous rocks.
A. slowly, extrusive
B. slowly, intrusive
C. rapidly, intrusive
D. rapidly, extrusive

Answers

Answer:

B)Slowly, intrusive

Which is the correctly balanced chemical equation for the reaction of KOH and H₂SO4?
OKOH H₂SO4 →K*+50²-
2KOH+H₂SO4 → K₂SO4
2KOH+H₂SO4 → K₂SO4+2H₂O
4
OKOH H₂SO4 → K₂SO4 →H₂O


Answers

Answer:

2KOH + H2SO4 > K2SO4 + 2H2O

Explanation:

firstly the order speaks, you can't have something like OKOH so the other two is eliminated. Then check if the remaining reactions balance

The  correctly balanced chemical equation for the reaction of KOH and H₂SO₄ is 2 KOH+H₂SO₄ → K₂SO₄+2 H₂O.

What is chemical equation?

Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.

A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .

The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.

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Which of the following species of fish have cartilaginous skeletons?

Answers

You can attach a picture so I can help you

Answer:

sharks have cartilaginous skeletons

Explanation:

Sharks are an example

According to the phase diagram for H₂O, what happens to the phases of
water at 0°C as the pressure is increased from 0 atm to 10 atm?

Answers

Answer:

"A", "water changes from a gas to a solid to a liquid", according to this phase diagram, at at 0°C, as pressure is increased from 0atm to 10atm.

Explanation:

The question asks what happens at 0°C, as pressure is increased from 0atm to 10atm.

According to the question, the temperature is held constant.  The pressure changes.  In the phase diagram, we find the temperature 0°C on the horizontal axis, and all points where the temperature are 0°C are along that vertical line.

Since the pressure starts at 0atm and increases to 10atm, we start at the bottom, and move upward along that line, to see what phases of matter the substance changes to.

At the bottom, it is initially in a "gas" phase.  As it moves up, it transitions to a "solid" phase.  Later, as it continues moving up, it changes again into a "liquid" phase.

Thus, the answer would be "A", "water changes from a gas to a solid to a liquid", according to this phase diagram, at at 0°C, as pressure is increased from 0atm to 10atm.

In desperate need of help!!!!!!!

Answers

Answer:

The answer will be false.

Explanation:

because it is not balanced.

The pressure of a gas sample was measured to be 654 mmhg. What is the pressure in kpa? (1 atm = 1. 01325 × 10 5 pa)

Answers

Taking into account the change of units, the pressure of the gas sample is 87.19 kPa.

What is rule of three

In first place, the rule of three is a way of solving problems of proportionality between three known values and an unknown value, establishing a relationship of proportionality between all of them.

That is, what is intended with it is to find the fourth term of a proportion knowing the other three.  

If the relationship between the magnitudes is direct, that is, when one magnitude increases, so does the other (or when one magnitude decreases, so does the other) , the direct rule of three must be applied.

To solve a direct rule of three, the following formula must be followed, being a, b and c known data and x the variable to be calculated:

a ⇒ b

c ⇒ x

So: [tex]c=\frac{cxb}{a}[/tex]

Pressure

The direct rule of three is the rule applied in this case where there is a change of units.

To perform in this case the conversion of units, you must first know that:

1 atm= 760 mmHg1 atm = 1. 01325×10⁵ Pa= 101325 Pa1 kPa= 1000 Pa

So, if 1 atm is 760 mmHg, how many atm equals 654 mmHg?

760 mmHg ⇒ 1 atm

654 mmHg ⇒ x

So: [tex]x=\frac{654 mmHgx1 atm}{760 mmHg}[/tex]

Solving:

x=0.86 atm

Now, if 101325 Pa are 1 atm, how many Pa equals 0.86 atm?

1 atm ⇒ 101325 Pa

0.86 atm ⇒ x

So: [tex]x=\frac{0.86 atmx101325 Pa}{1 atm}[/tex]

Solving:

x= 87,192.83 Pa

Finally, if 1 kPa is 1000 Pa, how many kPa equals 87,192.83 Pa?

1000 Pa ⇒ 1 kPa

87,192.83 Pa ⇒ x

So: [tex]x=\frac{87,192.83 Pax1 kPa}{1000 Pa}[/tex]

Solving:

x=87.19283 kPa≅ 87.19 kPa

In summary, the pressure of the gas sample is 87.19 kPa.

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The table compares the number of electrons in two unknown neutral atoms.
Comparison of Electrons
Atom Number of Electrons
A9
D11
Use this information to determine the number of valence electrons in the atoms. Which of the following correctly compares the stability of the two atoms?
O Both are unreactive.
O Both are highly reactive.
OA is unreactive and D is reactive.
OA is reactive and D is unreactive.

Answers

Answer: Both are highly reactive.

Explanation:

A is fluorine, which only needs to gain one more electron to have a full valence shell. Thus, it is reactive.

D is sodium, which only needs to lose one electron to have a full valence shell. Thus, it is also reactive.

Using the conclusion from ruthefords model, identify a charged subatomic particle that is located in the nucleus

Answers

You could say either protons or neutrons.

What do scientists and engineers have in common?

Answers

Answer:

Engineers and scientists both use methods of science and facts.

Explanation:

They often use Math and computer in calculations.

Answer:

Scientists and engineers both use the facts and methods of science, and both often use MATH and COMPUTERS in their work.

Explanation:

Hydrogen and Oxygen will have ______ properties after they bond to become water.
A. only the dominant element’s
B. both of their original
C. the same
D. completely new

Answers

Hydrogen and oxygen will have completely new properties

Which conclusion is consistent with the following net ionic equation? co2+(aq) + s2-(aq) cos(s)

Answers

The conclusion that is consistent with the ionic equation would be that COS (s) is a precipitate.

What is a precipitation reaction?

It is a reaction in which 2 soluble salts in aqueous forms react to produce an insoluble salt as one of the reaction's products.

Precipitate products are usually insoluble and can be filtered off using suitable filter paper. In other words, they are solids that are suspended in solution.

Following the ionic reaction, the two reacting ions are in aqueous forms while the product formed is solid.

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Which of the following processes does not facilitate containment?
OA. Enrichment of uranium-235 is done.
B. Steel-reinforced concrete several feet thick surrounds the plant.
C. Workers wear protective clothing.
D. The water used to cool the fuel rods is enclosed.
SUBMIT

Answers

Enrichment of uranium-235 is done. Hence, option A is correct.

What is the meaning of containment?

The act, process, or means of keeping something within limits the containment of health costs.

Enrichment is a process of increasing the proportion of fissile isotope found in uranium ore (represented by the symbol 'U') to make it usable as nuclear fuel or the compressed, explosive core of nuclear weapons.

Hence, option A is correct.

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3.the three major types of radioactive decay of an unstable nucleus are alpha particles, beta particles, and gamma rays.

explain how alpha decay works and how it causes a transmutation. be sure to note all changes to the nucleus in your explanation.


write the equation for the alpha decay of uranium-234.


explain how beta decay works and how it causes a transmutation. be sure to include all changes to the nucleus in your explanation.


write the equation for the beta decay of iodine-131.

Answers

a) Alpha decay occurs when an unstable nuclide emits an alpha particle, (which is just a helium-4 atom), which contains 2 protons and 4 neutrons. This means that transmutation has occurred (since a nuclide of a different element will be produced), and this newly produced nuclide will have 2 fewer protons and 4 fewer neutrons than the original nuclide.

b) [tex]^{234}_{92} \text{U} \longrightarrow ^{4}_{2} \text{He}+^{230}_{90} \text{Th}[/tex]

c) Alpha decay occurs when an unstable nuclide emits a beta particle, (also known as an electron). This causes transmutation (since a nuclide of a different element will be produced), and this newly produced nuclide will have 1 more proton than the original nuclide.

d) [tex]^{131}_{53} \text{I} \longrightarrow ^{0}_{-1} \beta+^{131}_{54} \text{Xe}[/tex]

Sample H is a mineral found in this sand! This mineral is black and will stick to you when you walk through the sand at the beach. Zoom in really close - sand is very cool to look at when it is magnified. We will look at more later in the class. The sand grains that you should focus on are black. Not all of the black grains are the same mineral however the mineral you're looking for is strongly magnetic. If you ran a magnet just over the top of this sample, some of black sand grains would stick. What mineral is it?

Answers

The mineral that's illustrated based on the information given will be magnetite.

What is a mineral?

A mineral simply means any pure substance that has a unique composition and structure.

Since the mineral is black and will stick to you when you walk through the sand at the beach, it's magnetite.

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How many hydrogen bonds will be found within an alpha helix that is 18 amino acids long?.

Answers

An alpha helix which is 18 amino acids long will have 12 hydrogen bonds.

What is alpha helix (α-helix) ?

The alpha helix (α-helix) is a common in the secondary structure of proteins and is a right hand-helix conformation in which every backbone N−H group hydrogen bonds to the backbone C=O. group of the amino acid located four residues earlier along the protein sequence.

The alpha helix is stabilized by hydrogen bonds (shown as dashed lines) from the carbonyl oxygen of one amino acid to the amino group of a second amino acid.

Because the amino acids connected by each hydrogen bond are four apart in the primary sequence, these main chain hydrogen bonds are called "n to n+4.

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a sample of helium gas has a volume of 1.00 l. what is the final volume if both the pressure and kelvin temperature each double?

Answers

Since the helium gas has a volume of 1.00 L, the final volume of the helium gas is 1.00 L

To find the volume, we need to know the general gas law.

What is the general gas law?

The general gas law is given by P₁V₁/T₁ = P₂V₂/T₂ where

P₁ = initial pressure of gas, V₁ = initial volume of gas, T₁ = initial temperature of gas in Kelvin, P₂ = final pressure of gas, V₁ = final volume of gas, andT₁ = final temperature of gas in Kelvin

Final volume of helium gas

So, making V₂ subject of the formula, we have

V₂ = P₁V₁T₂/T₁P₂

Since the sample of helium gas has a volume of 1.00 L and both the pressure and kelvin temperature each double, we need to find its final volume.

So,

P₂ = 2P₁, T₂ = 2T₁ and V₁ = 1.00 L

So, substituting the values of the variables into the equation, we have

V₂ = P₁V₁T₂/T₁P₂

V₂ = P₁V₁ × 2T₁/T₁ × 2P₁

V₂ = V₁

V₂ = 1.00 L

So, the final volume of the helium gas is 1.00 L

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What is the equilibrium expression for:
fe3o4(s) + 4h2(g) <=> 3fe(s) + 4h2o(g)
kc =

a)[fe]3 [h2o]4 / [fe3o4] [h2]4
b)[fe3o4] [h2]4 / [fe]3 [h2o]4
c)[h2o]4 / [h2]4
d)[fe] [h2o] / [fe3o4] [h2]

Answers

Answer:

c

Explanation:

in kc we only consider gases and aquas not solids and liquids

When the sun runs out of hydrogen in its core, it will become larger and more luminous because:.

Answers

Answer:

Faster hydrogen burning means the star will grow larger and more luminous to allow the extra energy created to escape

it starts fusing hydrogen in a shell around a helium core.

In 2007, the population of Canada was 1.26 × 108, the population of Mexico was 10.6 × 107, the population of Brazil was 13.6 × 107, and the population of China was 1.86 × 109. Which two countries have the highest population?

A. Canada and China
B. Mexico and China
C. China and Brazil
D. Brazil and Mexico

Answers

A do full go do by Gn no inns shoveling foreclosure
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A local candy shop sells boxes of chocolate for $3.45 each. If a customer purchases five or more boxes, the cost is only $3 per box, plus the customer has an additional $1 fee per order. If C(x) represents the total cost and x represents the number of boxes, which of the following functions best models this scenario? C of x equals 3.45 times x if x is less than 5 and 3.00x plus 1 if x is greater than or equal to 5. C of x equals 3.45 times x if x is less than 5 and 3.00 plus x if x is greater than 5. C of x equals 3.45 times x if x is less than or equal to 4 and 3.00x minus 1 if x is greater than 5. C of x equals 3.45 times x if x is less than 4 and 3.00x minus 1 if x is greater than or equal to 5 If c = 16, solve for b Which statement is TRUE about forces?A. Forces do not have a specific direction.B. Forces do not have specific strength.C. Forces always act in pairs, a push and a pull. What method involves asking numerous questions in order to get to the root cause of a problem? The Yankee (American) whaling ships began appearing in Spanish California at an increasing rate, driven by their desire for all of the following, except:a. good harbors to repair ships and take on fresh supplies.b. to exchange goods from New England for local produce.c. to engage in the lucrative sea otter fur trade.d. to establish permanent trading posts with Spanish settlements.Spanish control over Alta California was ended by thea. Yuma massacreb. death of Father Serrac. Mexican Revolution.d. establishment of Fort Ross.Governor Figueroa's secularization orders stipulated thata. half of the mission lands and livestock would be left to the Indians.b. all of the mission land and livestock would be left to the Indians.c. all mission cattle could be killed by the missionaries.d. Mariano Vallejo would administer the entire program.Under the period of rule from Mexico, all of the following are true except:a. land grants increased in size vastly from that of the Spanish era.b. foreigners were allowed to settle if they converted to Catholicism and took an oathof allegiance to the Mexican government.c. Ranchos flourished mainly through the hide and tallow trade.d. Californios were much more loyal to Mexico City than they had been to Spain.During the Mexican period, the real political control of society was held bya. Mexican governors.b. prominent ranchero families.c. 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American newcomers to the provinceOverland migration to California from the United States was:a. at its peak in the 1820s.b. made easier by Hastings Emigrant Guide.c. declining by the 1840s.d. stimulated by reports from American traders, mountain men, and sailors. Which number is irrational?C-4C2gO 11O 8.26 Follow the steps to find thearea of the shaded region.First, use the formulabelow to find the areaof the whole sector.=angle of sector360) rSector Area = [?] cmRound to four decimal places.Sector Area14 cm4614 cmEnter PLEASE HELPRead the excerpt from The Odyssey.Now Zeus the lord of cloud roused in the northa storm against the ships, and driving veilsof squall moved down like night on land and sea.The bows went plunging at the gust; sailscracked and lashed out strips in the big wind.We saw death in that fury, dropped the yards,unshipped the oars, and pulled for the nearest lee:then two long days and nights we lay offshoreworn out and sick at heart, tasting our grief,until a third Dawn came with ringlets shining.What does this excerpt most suggest about the beliefs of the ancient Greeks?1. They believed that natures strength was wholly uncontrollable.2. They believed that natures wrath could never be overcome.3. They believed that the gods were frequently unfair in their actions.4. They believed that the gods often punished people for acting badly. using nonverbal communicationeliminating stress from the patient's lifeensuring the patient's safetyspeaking calmlyCecile is a nursing assistant. Her patient is exhibiting a behavior related to a mental condition. What is one of Cecile'smain concerns regardless of what the mental condition is? can someone please help me whos anton drexler? Risk and __________ increase or decrease together. A. return B. deposit C. liquidity D. accessibility Please select the best answer from the choices provided A B C D two ships leave a port sailing 18km/h and 26 km/h. Their angle between their directions of travel from the port is 39 . How far part are the skips to the nearest km after 2 hours 9 out of 10 students prefer maths class over lunch how many students do not prefer math if 200 students were asked? When developing an experimental design, which action would improve thequality of the results?O A. Have a different researcher make the measurements.OB. Ensure that it answers a question about cause and effect.C. Include as many responding variables as possible.OD. Keep the sample size of test subjects to a minimum.SUBMIT A rocket weighing 300,000 N is taking off from Earth with a total thrust of460,000 N at an angle of 20 degrees, as shown in the image below. What isthe approximate vertical component of the net force that is moving the rocketaway from Earth? Bronze is a mixture of copper and tin.The copper and tin are in the ratio 9:1.a) How much tin is there in a bronze braceletweighing 260 grams?6 Write the number below as a fraction in its simplest form0.125 the 1 and 5 are recurring The movement of the progress bar may be uneven because questions can be worth more or less (including zero) depending on your answer.Who is the intended audience for this passage?Reading Ecommunity membersBig Oaks Park rangersfriends of Chad Pregrackegovernment agenciesSubmitPassDon't know answer21 It was aone person2 A harshhues of gredecided toBoswell isa greenbell20 yards on What is the percent by mass of 5 g of sodium chloride mixed with 80 g of water