If 3.000g of k2co3 were used in this experiment (instead of khco3),
a. what is the balanced equation for the equation? k2co3 + 2hcl = 2kcl + co2 + h2o
b. how many milliliters of 6.0 m hcl would be needed ________ml hcl
c. how many grams of kcl would be formed in the reaction? ________ g kcl

Answers

Answer 1

A. The balanced chemical equation is correct:

k2co3 + 2hcl --> 2kcl + co2 + h2o

 

B. First let us calculate the moles of K2CO3.

moles K2CO3 = 3 g / (138.205 g/mol) = 0.0217 mol

 

From the equation, we need 2 moles of HCl per 1 mole of K2CO3, hence:

moles HCl needed = 0.0217 mol * 2 = 0.0434 mol

 

So the volume required is:

volume HCl = 0.0434 mol / 6 M = 7.24 x 10^-3 L = 7.24 mL

 

C. The number of moles of HCl and KCl is equal hence:

moles KCl = 0.0434 mol

 

The molar mass of KCl is 74.5513 g/mol, so the mass is:

mass KCl = 0.0434 mol * 74.5513 g/mol = 3.24 grams

Answer 2
Final answer:

In a reaction of K2CO3 with HCL the balanced chemical equation is K2CO3 + 2HCL = 2KCL + CO2 + H2O. For 3g of K2CO3, approximately 7.2 mL of 6M HCL would be required and the reaction would yield approximately 3.2g of KCL.

Explanation:

The topic that is being asked here revolves around chemical equations, stoichiometry and calculations pertaining to a chemical reaction. In the question, you have the chemical reaction K2CO3 + 2HCL = 2KCL + CO2 + H2O where K2CO3 is reacting with Hydrochloric acid (HCl) to form Potassium chloride (KCl), Carbon dioxide (CO2), and Water (H2O).

b) The molar mass of K2CO3 is approximately 138.205g/mol. Since you have 3g, that is approximately 0.0217 mol of K2CO3. Since 2 mol of HCl react with 1 mol of K2CO3, you would require 0.043 mol of HCL which in mL for 6M HCl would be approximately 7.2 mL HCl.

c) Given the reaction, 2 mol of KCL are generated per mol of K2CO3. So with 0.0217 mol of K2Co3, you will produce close to 0.043 mol of KCl. The molar mass of KCl is about 74.55g/mol, so the mass produced would be about 3.2g of KCL.

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Related Questions

Write a balanced equation for the formation of one mole of nacl(aq) from its elements

Answers

2Na + Cl2 => 2NaCl 1 mol Na + 0.5 mol Cl2 => 1 mol NaCl

A balanced equation for the formation of one mole of NaCl (aq) from its elements is [tex]\rm2Na + Cl_2 \rightarrow 2NaCl[/tex].

What are elements?

Elements are defined as a substance that is entirely made up of the same kind of atoms, all of which have the same amount of protons in their nuclei. Every element has characteristics. Conductivity, magnetism, melting and boiling points, color, state of matter, and other characteristics are among these. The periodic table of elements is divided into sections, each of which contains groups of elements having related properties.

Balanced equation is defined as a chemical equation where the amount of each element's atoms on each side of the equation is equal and the mass is preserved. The law of conservation of mass stipulates that mass cannot be generated or destroyed, hence a chemical equation must always be in balance.

Thus, a balanced equation for the formation of one mole of NaCl (aq) from its elements is [tex]\rm2Na + Cl_2 \rightarrow 2NaCl[/tex].

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An atom of aluminum with a mass number of 24 and an atomic number of 13 has a total of

Answers

13 protons and 13 electrons 
14 neutrons.
You have wrote incorrect mass . The correct mass of aluminum is 27 and its atomic number is 13.

An atom of aluminum with a mass number of 26 and an atomic number of 13 has a total of 13 protons and electrons  and 13 neutrons.

What is an atom?

An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.

The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.

Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.

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How do the valence electron configurations of alkali metals compared with each other?

Answers

They have the same number of valence electrons

A 50 g sample of iron reacts with 21 g of oxygen to form how many grams of iron oxide?

Answers

Final answer:

To calculate the grams of iron oxide formed, you need to calculate the moles of iron and moles of oxygen in the reaction and use the mole ratio from the balanced chemical equation. From the given information, the moles of iron and oxygen are 0.894 mol and 1.3125 mol, respectively. Using the mole ratio of 4 moles of iron to 2 moles of iron oxide, we can calculate that 0.447 mol of iron oxide is formed. Finally, converting moles to grams, we find that 71.26 g of iron oxide is produced.

Explanation:

To determine the grams of iron oxide formed, you need to calculate the moles of iron and moles of oxygen in the reaction and use the balanced chemical equation to determine the mole ratio. From the given information, the molar mass of iron is 55.845 g/mol and the molar mass of oxygen is 16.00 g/mol. The balanced chemical equation for the reaction is:

4Fe + 3O₂ → 2Fe₂O₃

Using stoichiometry, we can calculate the moles of iron and oxygen:

Moles of iron = (50 g iron) / (55.845 g/mol) = 0.894 mol

Moles of oxygen = (21 g oxygen) / (16.00 g/mol) = 1.3125 mol

From the balanced chemical equation, we can see that the mole ratio of iron to iron oxide is 4:2. Therefore, for every 4 moles of iron, we get 2 moles of iron oxide. So, the moles of iron oxide formed in the reaction is:

Moles of iron oxide = (0.894 mol iron) / (4 mol iron) * (2 mol iron oxide) = 0.447 mol iron oxide

Finally, we can calculate the grams of iron oxide:

Grams of iron oxide = (0.447 mol iron oxide) * (159.69 g/mol) = 71.26 g iron oxide

The force of gravity pulls all objects downwards." which of these statements is correct about the law of science?
a.it is not supported by observations.
b.it can be contradicted by valid data.
c.it requires no further experimentation. or
d.it it a description in nature that will continue to change.

Answers

The correct statement about the law of gravity is that it can be contradicted by valid data. Newton's law of gravitation, which has been expanded upon by Einstein's Theory of General Relativity, remains a well-tested hypothesis, and scientific laws are subject to ongoing testing and revision.

The force of gravity is a fundamental principle in physics, described by Newton's law of gravitation, which states there is a force of attraction between masses. This law is supported by copious observations and is considered a scientific law because it consistently describes what happens under certain conditions in nature.

When evaluating the statement, "The force of gravity pulls all objects downwards," the correct choice would be option b, as scientific laws can be contradicted by new, valid data, which may lead to their modification or replacement.

For instance, Albert Einstein's Theory of General Relativity provided new insights into gravity that go beyond Newton's law, particularly in extreme conditions involving massive objects like the sun. Additionally, all scientific laws, including the law of gravity, are subject to continued examination and testing; they are well-tested hypotheses rather than absolute truths. To help understand this concept, one can perform a take-home experiment by dropping objects of different masses from the same height to observe that they hit the ground simultaneously, which is a demonstration of Galileo's observation that all masses fall with the same acceleration, explained by the law of gravitation.

Living things transform kinetic energy into potential chemical energy in the

Answers

<Sgx,JASYLDhLAxhclsxb cddont know

Which property of isotopes makes them suitable for determining the dates of ancient artifacts? atomic number of the isotope rate of decay of the isotope radiation from the isotope stable nature of the isotope

Answers

Each isotope has a unique rate of decay, making them suitable for determining the dates of ancient artifacts. The answer is "rate of decay of the isotope."

Magnesium metal reacts with iodine gas at high temperatures to form magnesium iodide. what mass of mgi2 can be produced from the reaction of 5.15 g mg and 50.0 g i2

Answers

Final answer:

To find the mass of MgI2 produced in the reaction between Mg and I2, you need to calculate the moles of Mg and I2 and use the mole ratio from the balanced equation. Finally, convert the moles of MgI2 to grams using the molar mass of MgI2.

Explanation:

In this reaction, the balanced equation is 2Mg + I2 → 2MgI2. From the balanced equation, we can see that 2 moles of Mg react with 1 mole of I2 to produce 2 moles of MgI2. To find the mass of MgI2 produced, we need to calculate the moles of Mg and I2 and then use the mole ratio to determine the moles of MgI2. Finally, we can convert the moles of MgI2 to grams using the molar mass of MgI2.

Given: m(Mg) = 5.15 g, m(I2) = 50.0 g

Molar mass of MgI2 = 278.113 g/mol

Calculate the moles of Mg using the formula: moles = mass/molar massCalculate the moles of I2 using the same formulaFrom the balanced equation, the mole ratio between Mg and MgI2 is 2:2, so the moles of MgI2 will be the same as the moles of MgConvert the moles of MgI2 to grams using the formula: mass = moles x molar mass

Using these steps, you can determine the mass of MgI2 that can be produced from the given masses of Mg and I2.

It is thought that long-term memory never can get filled up. the term used to describe the capacity of long-term memory is ________.

Answers

Final answer:

The term used to describe the capacity of long-term memory is 'unlimited' or 'limitless' due to its potentially infinite capacity for storing information for extended periods.

Explanation:

The term used to describe the capacity of long-term memory is unlimited or limitless. Long-term memory (LTM) is a type of memory storage that can hold information for extended periods, ranging from days to years. Long-term memory differs from short-term memory in that it possesses a potentially infinite capacity; there is no known limit to what we can remember. Although the ability to retrieve information from LTM can be affected by various factors, such as consolidation and interference, the storage capacity itself is considered vast.

When balancing a chemical equation, the number of h atoms in 2 ch4 is eight?

Answers

yes... that is correct.

CH4 is methane so the coefficent in front of it would double the number of atoms of each element

the waste product of photosynthesis is: carbon, oxygen, nitrogen, carbon dioxide

Answers

The waste product is oxygen.
I believe the answer is...Oxygen! Plants release Oxygen through photosynthesis and we release Carbon Dioxide through exhaling, thus the cycle is formed! Hope this helps! Brainliest plz!

The specific heat of silver (ag) is 0.245 j/ºc g. determine the energy required to raise the temperature of 350 g of ag from 293 k to 400 k.

Answers

9180 Joules First determine how many degrees the temperature is being changed. 400 K - 293 K = 107 K Since the units K and C have the same magnitude (they just have a different 0 point). We can freely exchange them when merely speaking of differences and not absolute values. So we can express the specific heat of silver as 0.245 J/ÂşC g or 0.245 J/K g. In any case, we now have 3 values with the units J/K g, g, and K. We desire a result with the units J. So it's a simple matter of multiplication and division such that we get the desired unit. Let's start with our specific heat 0.245 J/(K g) And let's cancel out the g term. Multiplying by our g term will do nicely. So 0.245 J/(K g) * 350 g = 85.75 J/K Now let's cancel out the K term. Another multiplication will do it. 85.75 J/K * 107 K = 9175.25 J Since we only have 3 significant figures in our data, round to 3 significant figures, giving 9180 J.

Specific heat equation is given as

[tex]Q =m\times c\times \Delta T[/tex]

where, Q = energy required

m = mass

c = specific heat

[tex]\Delta T[/tex] = change in temperature

Specific heat of silver ([tex]Ag[/tex]) is [tex]0.245 J/^{o}C g[/tex]

Mass of silver  = 350 g

[tex]\Delta T =T_{final}-T_{intital}[/tex]

Convert 400 K to degree Celsius = 400-273 = 127 K

Convert 293 K to degree Celsius = 293-273 = 20 K

Thus, [tex]\Delta T =127 K-20 K[/tex]

=   [tex]107^{o}C[/tex]

Put the values,

[tex]Q =m\times c\times \Delta T[/tex]

[tex]Q = 350 g\times 0.245 J/^{o}C g\times(107^{o}C)[/tex]

= 9175.25 J

Hence, energy required to raise the temperature is 9175.25 J



In the periodic table of elements, what do all of the elements in group 2 have in common?
A) An atom of each element can hold up to eight electrons in its outer energy level.

B) An atom of each element can hold up to six electrons in its outer energy level.

C) Each element is an alkaline earth metal.

D) Each element is a halogen.

E) Each element is dull, brittle, and breaks easily.

Answers

Answer:

C

Explanation:

Final answer:

All elements in Group 2 of the periodic table are characterized as alkaline earth metals. They share the common characteristic of having two valence electrons in their outermost energy level. These elements tend to lose these electrons to reach stability, making them typically reactive.

Explanation:

In the periodic table, all elements in Group 2 have some key similarities. The most significant common characteristic is that each element in this group is an alkaline earth metal. This means that they have two valence electrons in their outermost energy level. They tend to lose these two electrons to reach a stable state, so they are typically reactive.

It is incorrect to say that an atom of each element can hold up to eight or six electrons in its outer energy level. This description fits more with Group 16 and Group 18 elements, respectively. Also, these elements are not halogens (Group 17 elements), which have seven valence electrons, nor are they necessarily dull, brittle, or break easily, as these are generally more descriptive of non-metals than metals.

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mars is 1.52 au from the sun . about how many kilometers is mars from the sun

Answers

2.492 * 10^8 kilometers

Final answer:

Mars is approximately 227.5 million kilometers from the Sun.

Explanation:

Mars is approximately 1.52 astronomical units (AU) from the Sun. Given that the average distance between the Earth and the Sun is about 149.6 million kilometers, we can calculate the distance from Mars to the Sun. Since 1 AU is equivalent to about 149.6 million kilometers, we can multiply 1.52 AU by 149.6 million kilometers to find that Mars is approximately 227.5 million kilometers from the Sun.

What process uses atomic particles of carbon and uranium to determine exact age?

Answers

This is the process of radioactive dating. Carbon is used because it is an essential part of all living organisms and has a radioisotope that decays with a half-life of 5000 years. This ratio makes it easy to date an object using Carbon-14. Uranium is used for objects that have a much longer half-life, outside the bounds of carbon's abilities.

Answer:

Radioactive dating

Explanation:

To find the number of neutrons in an atom, subtract its _____.

Answers

subtract it's atomic number from it's mass number

Explanation:

It is known that an atom consists of protons, neutrons and electrons. Both protons and neutrons are located inside the nucleus of an atom whereas electrons revolve around the nucleus.

Atomic number is the total number of protons present in an atom. On the other hand, atomic mass is the sum of total number of protons and neutrons present in an atom.

That is,     Atomic mass = no. of protons + no. of neutrons

                 no. of neutrons = atomic mass - no. of protons

Therefore, we can conclude that to find the number of neutrons in an atom, subtract its number of protons from atomic mass.

Which of the following elements is a gas at room temperature?

fluorine (F)

sulfur (S)

mercury (Hg)

iodine (I)

Answers

The answer is fluorine.

Which combination will produce a precipitate? agno3 (aq) and ca(c2h3o2)2 (aq) naoh (aq) and hcl (aq) nacl (aq) and hc2h3o2 (aq) nh4oh (aq) and hcl (aq) fe(no3)2 (aq) and koh (aq)?

Answers

Final answer:

The combination of Fe(NO3)2 (aq) and KOH (aq) is the one that will produce a precipitate, as Fe(OH)2 is generally insoluble in water.

Explanation:

To determine which combination will produce a precipitate, we need to consider the solubility rules and look for a product in each reaction that forms an insoluble solid, known as a precipitate. We can predict precipitate formation by looking at possible products of a double displacement reaction and referencing a solubility chart.

Analysis of Combinations

AgNO3 (aq) and Ca(C2H3O2)2 (aq): No precipitate is expected because all nitrates (NO3-) and acetates (C2H3O2-) are soluble.

NaOH (aq) and HCl (aq): No precipitate forms, instead, you get NaCl (aqueous) and water (H2O).

NaCl (aq) and HC2H3O2 (aq): Again, no precipitate is expected because all chlorides (except those with Ag+, Pb2+, Hg2 2+) are soluble, as are all acetates.

NH4OH (aq) and HCl (aq): This combination results in the formation of NH4Cl (aqueous) and water, so no precipitate forms here either.

Fe(NO3)2 (aq) and KOH (aq): This combination will likely result in an insoluble hydroxide precipitate, specifically Fe(OH)2.

Based on this analysis, the combination that will produce a precipitate is Fe(NO3)2 (aq) and KOH (aq), as iron(II) hydroxide is generally insoluble in water.

The combination of B. NaOH and Fe(NO₃)₃ will produce a precipitate of Fe(OH)₃.

Other combinations either do not react or form soluble products.

To determine which combination of solutions will produce a precipitate, we can use solubility rules. Let's analyze each option:

Option A: AgNO₃ (aq) and Ca(C₂H₃O₂) (aq)
All nitrates (NO₃⁻) and acetates (C₂H₃O₂⁻) are soluble in water. Therefore, no precipitate will form.Option B: NaOH (aq) and Fe(NO₃)₃ (aq)
When NaOH reacts with Fe(NO₃)₃, Fe(OH)₃, which is an insoluble compound, forms as a precipitate:
Fe(NO₃)₃ (aq) + 3 NaOH (aq) → Fe(OH)₃ (s) + 3 NaNO₃ (aq).Option C: NaCl (aq) and HC₂H₃O₂ (aq)
Sodium chloride (NaCl) and acetic acid (HC₂H₃O₂) are both soluble, so no precipitate will form.Option D: NH₄OH (aq) and HCl (aq)
Ammonium hydroxide (NH₄OH) and hydrochloric acid (HCl) neutralize each other, forming water and ammonium chloride, both of which are soluble:
NH₄OH (aq) + HCl (aq) → NH₄Cl (aq) + H₂O (l).Option E: NaOH (aq) and HCl (aq)
Similar to option D, sodium hydroxide (NaOH) and hydrochloric acid (HCl) neutralize each other, forming water and sodium chloride, both of which are soluble:
NaOH (aq) + HCl (aq) → NaCl (aq) + H₂O (l).

Therefore, the correct answer is option B, where the reaction produces the precipitate Fe(OH)₃.

Correct question is: Which combination will produce a precipitate?
A. AgNO₃ (aq) and Ca(C₂H₃O₂) (aq)

B. NaOH (aq) and Fe(NO₃)₃ (aq)

C. NaCl (aq) and HC₂H₃O₂ (aq)

D. NH₄OH (aq) and HCl (aq)

E. NaOH (aq) and HCl (aq)

hey help me please :)
What is a possible pH of acid rain?

7.0
6.9
4.3
10.5

Answers

the answer is 4.3.... that acid rain can range from 3-4 on a pH scale

the answer is 4.3.....

Which two ions will MOST LIKELY bond? A. bromine ion and iodine ion B. lithium ion and chlorine ion C. sodium ion and potassium ion D. calcium ion and magnesium ion

Answers

It would be lithium and Chlorine because they are trying to get 8 valence electrons and 1 valence electron plus 7 valence electrons.

Final answer:

Sodium ion and potassium ion are the two ions that are most likely to bond due to their positive charges.

Explanation:

The two ions that are most likely to bond are sodium ion and potassium ion. Both sodium and potassium are alkali metals in Group 1 of the periodic table and have a single electron in their outermost energy level. When they lose this electron, they form positively charged ions (cations). Since sodium has a +1 charge and potassium has a +1 charge, these ions are attracted to each other through electrostatic forces, forming a bond.

An element whose atoms have the electron configurations 2-8-18-1?

Answers

Final answer:

The element with electron configuration 2-8-18-1 is potassium (K), which is in the first column of the s-block of the periodic table and has an atomic number of 19.

Explanation:

An element whose atoms have the electron configuration 2-8-18-1 is likely a member of the alkali metals which reside in the first column of the s-block. The mentioned configuration suggests that this element has 29 electrons. Referring to the periodic table and electron configurations chart, we can determine that the element with this configuration is potassium (K), which has an atomic number of 19. Potassium typically has the electron configuration of 1s² 2s² 2p¶ 3s² 3p¶ 4s¹, which is the same as having the configuration 2-8-8-1 when considering each shell's capacity without specifying subshell orbitals.

Would it make a difference if calcium bromide solution, cabr2, were used rather than sodium bromide solution?

Answers

No it would not because solubility would not be affected since bromine is the only element in the reaction that is involved in the reaction.

13. What is the difference between a solution and a heterogeneous mixture? Give an example of
each.
(4 points)

Answers

A solution is a solid (the solvent) dissolved in a liquid (the solute). A heterogeneous mixture is two substances in different states (i.e. a gas and a liquid) that are in the same space and are in contact with each other. When you have a solution that is a gas-gas or a liquid-liquid or possibly a solid-solid solution, the matter of greater amount is the solute. A solution is an example of a homogeneous mixture (can't see the particles with a naked eye). But with heterogeneous mixtures, you can see the particles.

Answer:

The macroscopic appearance is different.

Explanation:

The two (solution) and heterogeneous mixture are actually mixtures. These are made up of one of two pure substances in gaseous and liquid phases.

However, the difference lies in the macroscopic level of the particles.

A heterogeneous mixture is made of different substances. For example, when powdered milk is added to water, the mixture is a white substance, or colloidal mixture. The mixture is a heterogeneous in the sense that is all liquid; however, the mixture is not the same color as water. Thus, there is not complete dissolution.  

A solution is the same throughout. An example is dissolving sugar into water. The solution is colorless throughout. The difference is that the sugar and water have formed a solution whose properties are not visible to the naked eye.

Part
b.1. eliseo couldn't find the 6 m hcl and so used 6 m hno3 for testing the metals instead. his logic? both are strong acids. explain how the results of the experiment would have been different.

Answers

We all know that HNO3 should have not been used in this redox titration because being an oxidizing agent it corrodes the compound itself while HCL is a very unstable or volatile and it takes slice in the response. And the final outcome would have produced a blue solution, whereas there would really be no reaction had he used the 6 M HCl as taught.

Electrons have almost no mass. True False

Answers

The answer for this is true 

TRUE is the perfect answer


Which of the following statements best describes the Aufbau principle?

Answers

The answer is the choice A

What is the name for the most abundant chemical sedimentary rock? what mineral is it made of? what is the chemical formula for that mineral?

Answers

The most abundant chemical sedimentary rock is limestone.
Limestone's are usually formed by biochemical processes in shallow seawater.
Calcite (CaCO3)

Limestone is the most prevalent type of chemical sedimentary rock. Calcite, also known as calcium carbonate, is the main component of limestone and has the chemical formula CaCO3.

What is a sedimentary rock?

The formation of sedimentary rocks involves the accumulation or deposition of mineral or organic particles at the Earth's surface, followed by cementation. The processes that lead to the accumulation of these particles are collectively referred to as sedimentation.

Clastic, organic (biological), and chemical sedimentary rocks are the three different types of sedimentary rocks. Sandstone is a type of clast sedimentary rock, which is formed from fragments of other rocks.

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In which orbital does an electron in a copper atom experience the greatest effective nuclear charge?

Answers

Obviously the orbital which is closer to nucleus. The 1s orbital will experience more nuclear charge, both from nucleus and other electrons.

Which of the following elements is represented by the orbital diagram?

Select one:
a. Phosphorus
b. Sulfur
c. Aluminum
d. None of these; this is an incorrect orbital diagram

Answers

The answer is A I hope it was right

which mineral is the major component of dryall

Answers

our answer is selenite gypsum. 
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