Helppppp asaapppppp plzzzzzz

Helppppp Asaapppppp Plzzzzzz

Answers

Answer 1

Answer:

Alright the very first thing you need to do is balance the equation:

2HCl + Na2CO3 -----> 2NaCl + CO2 + H2O

Now we need to find the limiting reactant by converting the volume to moles of both HCl and Na2CO3.

Volume x Concentration/molarity = moles

0.235L x 0.6 M = 0.141 moles / molar ratio of 2 = 0.0705 moles of HCl

0.094L x 0.75 M = 0.0705 moles /molar ratio of 1  = 0.0705 moles of Na2CO3

Since both of the moles are equal, it means the entire reaction is complete (while the identification of limiting reactant may seem like an unnecessary step, it's quite essential in stoichiometry, so keep an eye out) and there is no excess of any reactant.

Now we know that the product we want to calculate is aqueous so, following the law of conservation of mass, we should add both volumes together to calculate how much volume we could get for NaCl.

0.235 + 0.094 = 0.329L of NaCl

Now we apply the C1V1 = C2V2 equation using the concentration and volume of Na2CO3 because it's molar ratio is one to one to NaCl (You can also use HCL, but you have to divide their moles by 2 for the molar ratio)  and the volume we just calculated for NaCl.

(0.75M) x (0.094L) = C2 x (0.329L)

Rearrange equation to solve for C2:

(0.75M) x (0.094L)  =  C2

    (0.329L)

C2 = 0.214 M (Rounded)

When the reaction is finished, the NaCl solution will have a molarity concentration of 0.214 M.


Related Questions

How did the atomic model change due to the research of thomson, rutherford, and bohr?

Answers

Answer:

Thomson's plum pudding model of the atom had negatively-charged electrons embedded within a positively-charged "soup." Rutherford's gold foil experiment showed that the atom is mostly empty space with a tiny, dense, positively-charged nucleus. Based on these results, Rutherford proposed the nuclear model of the atom.

25.0g of iron is heated to 100.0 and then placed in 50.0 g of water in a insulated calorimeter. the initial temperature of the water is 38.00. the specific heat of water is 4.181j/g and the specific heat if iron is 0.45j/g. what is the final temp of the water and the iron?

Answers

Answer:

Approximately [tex]41.2\; {\rm ^{\circ} C}[/tex].

Explanation:

Let [tex]t\; {\rm ^{\circ} C}[/tex] be the final temperature of the water and the iron.

Temperature of the water would be increase by [tex](t - 38.00)\; {\rm ^{\circ} C}[/tex].

Temperature of the iron would be reduced by [tex](100.0 - t)\; {\rm ^{\circ} C}[/tex].

Let [tex]c[/tex] denote the specific heat of each material. Let [tex]m[/tex] denote the mass of the material. For a temperature change of [tex]\Delta t[/tex], the energy change involved would be:

[tex]Q = c\, m \, \Delta t[/tex].

The energy that the water need to absorb would be:

[tex]\begin{aligned}& Q(\text{water, absorbed}) \\ =\; & c(\text{water}) \, m(\text{water})\, \Delta t (\text{water}) \\ =\; & 4.181\; {\rm J \cdot g^{-1} \cdot K^{-1}} \times 50\; {\rm g} \times (t - 38.00)\; {\rm ^{\circ} C} \\ =\; & (209.05\, t - 7943.9)\; {\rm J} \end{aligned}[/tex].

The energy that the iron would need to release would be:

[tex]\begin{aligned}& Q(\text{iron, released}) \\ =\; & c(\text{iron}) \, m(\text{iron})\, \Delta t (\text{iron}) \\ =\; & 0.45\; {\rm J \cdot g^{-1} \cdot K^{-1}} \times 25.0\; {\rm g} \times (100.0 - t)\; {\rm ^{\circ} C} \\ =\; & (1125 - 11.25 \, t)\; {\rm J} \end{aligned}[/tex].

Since this calorimeter is insulated, the energy that the iron had released would be equal to the energy that the water had absorbed:

[tex]Q(\text{water, absorbed}) = Q(\text{iron, released})[/tex].

[tex]209.05\, t - 7943.9 = 1125 - 11.25\, t[/tex].

[tex]t \approx 41.2[/tex].

Thus, the final temperature of the water and the iron would be approximately [tex]41.2\; {\rm ^{\circ} C}[/tex].

How many molecules of NO2 are in 0.36 moles?

Answers

Answer:

1 mol contains 6.022*10^23 molecules 0.36 moles contain 0.36 * 6.022*10^23 = 2.2 *10^23 molecules

Explanation:

Which dosage form is a semisolid preparation that contains very small solid particles that are suspended in a liquid

Answers

A GEL is a semisolid preparation that contains very small solid particles that are suspended in a liquid. A gel always contains an agent (e.g., agarose) that provides stiffness to the preparation.

A gel is a semisolid preparation that contains a gelling agent which provides stiffness to the preparation.

The gelling agent can be, for example, agarose (this gelling agent is used to prepare gels in electrophoresis).

In an agarose gel, agarose molecules are organized into three-dimensional (3D) structures similar to pores, which allow the passage of DNA fragments during electrophoresis.

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a terminal alkyne was treated with nanh2 followed by propyl iodide. the resulting internal alkyne was treated with ozone followed by water, giving only one type of carboxylic acid. provide a systematic, iupac name for the internal alkyne.

Answers

The systematic Iupac name for the internal alkyne is : 4-octyne

When only one type of carboxylic acid is made the internal alkyne will be symmetric and the compounds can be 3-hexane or 4-octyne but given that one of the reactants is propyl iodide. Therefore

The Internal alkyne will have an Iupac name 4-octyne

Hence we can conclude that the systematic Iupac name for the internal alkyne is 4-octyne

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A glacier can travel over the surface of Earth and reshape it. The chart describes three things a glacier can do.

Glacial Actions:
1. breaks large rocks into smaller ones
2. pushes broken rocks ahead of itself
3. leaves broken rocks behind when the front edge melts

Which terms BEST describe these glacial actions in the order as presented?

a. weathering, erosion, deposition

b. erosion, chemical weathering, deposition

c. deposition, weathering, erosion

d. chemical weathering, mechanical weathering, erosion

Answers

Answer:

A

Explanation:

what object has a mass of 10 grams and a volume of 2 mL

Answers

Answer:

Destiny = 5 g/ml

Explanation:

The formula for density is d=

Knowing this, divide your mass by volume:

10 g / 2 ml = 5 g/ml

Final answer:

Destiny = 5 g/ml

noble gases are used in many situations where a safe and constant environment must be maintained. for example, helium is used to provide a protective atmosphere for making fiber optics and semiconductors. argon is used to fill incandescent and flourescent light bulbs to prevent oxygen from corroding the hot filament. why are noble gases used in these situations?

Answers

Answer:

Because they do not naturally react with other elements

Explanation:

Since noble gases do have a fulfilled valence shell, they do not react with other elements because they're already stable by the themselves.

Anyone down to start a convo

Answers

Yeah sure............

Can someone help?

Name the compound:

Answers

CH=benzene

Why?

benzene is represented by the empirical formula CH, which indicates that a typical sample of the compound contains one atom of carbon (C) to one atom of hydrogen (H).

----(Is this what you meant???)

2.Photosynthesis and combustion of coal are two chemical reaction taking place.How can you describe both reactions on the basis of energy transfer?

Answers

they consist of co2 and h2o

which of the following is the most dangerous type of radiation?

gamma decay, alpha decay, beta, decay, they are all equally dangerous

Answers

Answer:

gamma decay

Explanation:

gamma rays have the highest frequency on the EM spectrum, which makes them the most dangerous.

Why are ionic compounds not considered to be molecules?

Answers

Answer:

No, ionic compounds are crystals of infinite cations and anions bound together. There is no “molecule” of ionic compounds such as, for example, NaCl, because there are no single units of the compound.

Explanation:

Ionic compounds are not considered to be molecules because they do not consist of discrete, covalently bonded units like molecules.

In ionic compounds, the bonding occurs through the transfer of electrons from one atom to another, resulting in the formation of ions. These ions are held together by strong electrostatic attractions, known as ionic bonds.

Unlike molecules, which are formed by the sharing of electrons in covalent bonds, ionic compounds do not have individual units with fixed numbers of atoms. Instead, they exist as a three-dimensional lattice structure composed of alternating positive and negative ions. The ions are arranged in a repeating pattern throughout the crystal lattice.

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#SPJ6

How many molecules does 1 mole of Oz gas have?

Answers

awnser : 6.02×1023 molcules

Answer: One mole of oxygen gas, which has the formula O2, has a mass of 32 g and contains 6.02 X 1023 molecules of oxygen but 12.04 X 1023 (2 X 6.02 X 1023) atoms, because each molecule of oxygen contains two oxygen atoms

Which of these codes is best for creating websites?

Answers

The most used codes for the creation of websites are CSS and HTML.

What is a code?

A code can be defined as the basic unit that composes a website. This implies that by using a code you can create a website from scratch and by the end of the process you should have a functional and complete website.

What codes are used?

In website creation, the most common codes are  CSS and HTML.

HTML: This is the most common code used and also one of the easiest to understand and use.

CSS: This code is not as popular as HTML but it is still a very popular code used by many people creating websites.

Note: This question is incomplete because the options are not given; due to this, I answered it based on general knowledge.

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Most stars are part of the main sequence of stars in the HR diagram

Question 2 options:
True
False

Answers

I’m pretty sure that the answer is true

What is a trial? please​

Answers

examination by a test; experiment, as in chemistry, metallurgy, etc.

9.
a
What is the energy of a wave having a frequency of 5.71 x 1013 Hz?

Answers

Answer:

[tex] \huge{3.783 \times {10}^{ - 19} \: J}[/tex]

Explanation:

The energy of the wave can be found by using the formula

E = hf

where

E is the energy

f is the frequency

h is the Planck's constant which is

6.626 × 10-³⁴ Js

From the question we have

E = 6.626 × 10-³⁴ × 5.71 × 10¹³

We have the final answer as

[tex]3.783 \times {10}^{ - 19} \: J[/tex]

Hope this helps you

Fill in the blanks:
87 pg = [? ]x10^[?]g

Answers

87 picograms are equivalent to [tex]8.7\times 10^{-11}[/tex] grams.

This is a unit problem, in which a derived unit must translated into a fundamental unit. A picogram is a equivalent to a trillionth of a gram, which is the fundamental SI mass unit. Mathematically speaking, we have the following equivalence:

[tex]1\,pg = 1\times 10^{-12}\,g[/tex]

Now we proceed to find the equivalent value for this case:

[tex]87\,pg[/tex]

[tex]87\times 10^{-12}\,g[/tex]

[tex]8.7\times 10^{-11}\,g[/tex]

87 picograms are equivalent to [tex]8.7\times 10^{-11}[/tex] grams.

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In the conclusion to the snake mole lab, you have to convert 3.45 moles of (NH4)2S04 to
grams. What is the molar mass of (NH4)2504?

Answers

Molar mass = 132.14g/mol

What role does each type of chemical play in the firework

Answers

Answer:  Antimony: Antimony is used to create firework glitter effects. Barium: Barium is used to create green colors in fireworks,

Explanation:

Answer:

Explanation:Antimony: Antimony is used to create firework glitter effects. Barium: Barium is used to create green colors in fireworks, 

explain why nitrogen diffuses faster than clorine

Answers

due to the fact nitrogen diffuses faster than chlorine nitrogen has insures called co2 which implodes the chlorine which leads to nitrogen having a faster diffusion

Identify the limiting reactant when 9.65-g H2SO4 reacts with 6.10-g of NaOH.

Answers

Answer:

3.56

Explanation:

Will give 10 points.
Why does an atom have a neutral charge?
A It has equal numbers of electrons and protons.
B. The number of neutrons equals the number of protons and
electrons in the atom.
C. It has equal numbers of electrons and neutrons.
D. It has equal numbers of neutrons and protons.

Answers

Answer:

option A it has equal numbers of electrons and protons

Explanation:

electrons are negatively charged and protons are positively charged, so if the numbers of each are equal, then the atom will be neutral.

Answer:

A. it has equal numbers of electrons and protons

Explanation:

The overall charge of every atoms is neutral because the number of electrons and protons is the same. Protons are positively charged while electrons are negatively charged and so they cancel out.

Find the molecular formula of ethylene glycol, used in antifreeze, if its empirical formula is CH3O and its molar mass is 62 g/mol.

Answers

The molecular formula of the ethylene glycol is C₂H₆O₂.

From the question given above, the following data were obtained:

Empirical formula = CH₃O Molar mass of compound = 62 g/mol Molecular formula =?

Molecular formula = empirical × n = molar mass

[CH₃O]n = 62

[12 + (3×1) + 16]n = 62

31n = 62

Divide both side by 31

n = 62 / 31

n = 2

Molecular formula = [CH₃O]n

Molecular formula = [CH₃O]₂

Molecular formula = C₂H₆O₂

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When heat is being transferred away from a substance, the resulting phase change graph is known as a ____ curve.

a. Cooling

B. Heating ​

Answers

collinf is answerrrrrr

how can knowledge of percent composition help you as a consumer ? how can you promote responsible consumerism ?​

Answers

Answer:

it is a nice question....my mind tells me that the first is it use me as a good vibes and can use to anything the second i will do my best too absorbe it.

Explanation:

Hope this help...

The bowl of fruit has a mass of 2.2 kg.
What net force must act on the bowl of fruit to make it accelerate to the right
at a rate of 4.4 m/s2? (Hint: Use F = ma.)
A. F = 9.68 N right
B. F = 9.68 N left
C. F = 6.60 N left
D. F= 6.60 N right

Answers

Taking into account the Newton's second law, the correct answer is option A. F = 9.68 N right

In first place, acceleration in a body occurs when a force acts on a body.

Newton's second law states that a force will change the speed of an object because the speed and/or direction will change. These changes in velocity are called acceleration.

So, Newton's second law defines the relationship between force and acceleration mathematically. This law says that the acceleration of an object is directly proportional to the sum of all the forces acting on it and inversely proportional to the mass of the object

Mathematically, Newton's second law is expressed as:

F= m×a

where:

F = Force [N] m = Mass [kg] a = Acceleration [m/s²]

In this case, you know:

F= ? m= 2.2 kg a= 4.4 m/s²

Replacing in Newton's second law:

F= 2.2 kg× 4.4 m/s²

Solving:

F= 9.68 N

Finally, As the bowl of fruit accelerates to the right, the correct answer is option A. F = 9.68 N right

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Butane (C4 H10(g), Delta. Hf = â€"125. 6 kJ/mol) reacts with oxygen to produce carbon dioxide (CO2 , Delta. Hf = â€"393. 5 kJ/mol ) and water (H2 O, Delta. Hf = â€"241. 82 kJ/mol) according to the equation below. 2 upper C subscript 4 upper H subscript 10 (g) plus 13 upper o subscript 2 (g) right arrow 8 upper C upper O subscript 2 (g 0 plus 10 upper H subscript 2 upper O (g). What is the enthalpy of combustion (per mole) of C4H10 (g)? Use Delta H r x n equals the sum of delta H f of all the products minus the sum of delta H f of all the reactants. â€"2,657. 5 kJ/mol â€"5315. 0 kJ/mol â€"509. 7 kJ/mol â€"254. 8 kJ/mol.

Answers

The enthalpy of this reaction is -5315 KJ/mol.

The equation of the reaction is;

2C4H10(g) + 13O2(g) -----> 8CO2 (g) + 10H2O(g)

We know that the enthalpy of reaction can be obtained from the enthalpy of formation of the reactants and products as follows;

ΔHrxn = ΔHf(products) - ΔHf(reactants)

We have the following information from the question;

ΔHf C4H10 = - 125. 6 kJ/mol

ΔHf CO2 = - 393. 5 kJ/mol

ΔHf H2O = - 241. 82 kJ/mol

ΔHf O2 = 0 KJ/mol

Hence;

[(8 × (- 393. 5 )) + (10 × (-  241. 82))] - [2( - 125. 6))]

= -5315 KJ/mol

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Help me in the 10 the number. Clue- helium and hydrogen make up the first of these

Answers

Answer:

helium and hydrogen make up the first of these

the answer is period

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