23.4 grams of Al2(SO3)3 is yielded through a chemical reaction. How many moles is this?

Answers

Answer 1

Answer:

.0796  mole

Explanation:

Al2 (SO3)3      add the molecular weights

2 * Al = 2 * 26.982  +  

 3 * S  = 3 * 32.06   +

   9 * O  = 6 * 15.999      = 294.135  gm   per mole

Now... you have   23.4 grams of this substance

  23.4/294.135 = .0796 mole

EDITED !


Related Questions

How many R.P.'s is equivalent to 0.780 g of Na₂CO₂?

Answers

Answer:

pbo2+cl-=clo-+pb(oh)2

Explanation:

balance by ion electron

how do the parts of the liverworts above the soil get the minerals from the soil that are needed for plant processes

Answers

Answer:

I don't know but I'm curious now

Which color object would be the hottest? A violet object, a red object or a green object? Why?

Answers

Answer:

A Violet object

Explanation:

An Violet object attracts the heat after white objects, followed by orange, yellow, green, blue, indigo and violet, which attracts the most heat of any visible color other than black.


If 1.76 g of an ideal gas occupy 1.0 L at standard temperature and pressure (STP), what is the molar mass of the gas?

Answers

Answer:

Explanation:

Whenever you see molar masses in gas law questions, more often than not density will be involved. This question is no different. To solve this, however, we will first need to play with the combined ideal gas equation PV=nRT to make it work for density and molar mass. The derivation is simple but for the sake of time and space, I will skip it. Hence, just take my word for it that you will end up with the equation:M=dRTPM = molar mass (g/mol)d = density (g/L)R = Ideal Gas Constant (≈0.0821atm⋅Lmol⋅K) T = Temperature (In Kelvin) P = Pressure (atm)As an aside, note that because calculations with this equation involve molar mass, this is the only variation of the ideal gas law in which the identity of the gas plays a role in your calculations. Just something to take note of. Back to the problem: Now, looking back at what we're given, we will need to make some unit conversions to ensure everything matches the dimensions required by the equation:T=35oC+273.15= 308.15 KV=300mL⋅1000mL1L= 0.300 LP=789mmHg⋅1atm760mmHg= 1.038 atmSo, we have almost everything we need to simply plug into the equation. The last thing we need is density. How do we find density? Notice we're given the mass of the sample (0.622 g). All we need to do is divide this by volume, and we have density:d=0.622g0.300L= 2.073 g/LNow, we can plug in everything. When you punch the numbers into your calculator, however, make sure you use the stored values you got from the actual conversions, and not the rounded ones. This will help you ensure accuracy.M=dRTP=(2.073)(0.0821)(308.15)1.038= 51 g/molRounded to 2 significant figuresNow if you were asked to identify which element this is based on your calculation, your best bet would probably be Vandium (molar mass 50.94 g/mol). Hope that helped :) 

5.26 KG of nitrogen monoxide and 7.64 milligrams of oxygen are combined with mass of nitrogen dioxide is formed

Answers

Answer:

NO + O2 NO2

Explanation:

how many shared electrons are in the lewis structure of h2o2

Answers

Answer:

4 shared electrons

Explanation:

There are 4 shared electrons in the lewis structure of h2o2.

What do ferns and gymnosperms have in common?They are all vascular plants.
Reproduction depends on birds, bees, and other animals.
They all produce seeds.
They depend on water for fertilization.

Answers

Answer:

They are all vascular plants.

Explanation:

Vascular plants, also known as tracheophytes, are highly advanced plant creatures with leaves, stems, and roots, as well as a vascular system made up of conducting vessels. Ferns are herbaceous, pteridophytic vascular plants that do not produce flowers or seeds. Gymnosperms are vascular plants that produce seeds but do not produce blooms. Because the seeds aren't covered or protected by an ovary, they can be seen on the plant's leaves or other components. Angiosperms are flowering plants containing seeds that develop inside the ovary, which develops and produces fruit.

Answer:

They all produce seeds

Explanation:

When barium nitrate solution is added to aqueous sulfurous acid a white precipitate forms what is the name of that white precipitate ​

Answers

Answer:

I expect it is barium sulfate

Explanation:

What is the definition of spring scale?

Answers

A spring scale, spring balance or newton meter is a type of mechanical force gauge or weighing scale. It consists of a spring fixed at one end with a hook to attach an object at the other.

Thermal energy transfer lab report.
I need answers for questions 1-11.
If you cannot answer every question, that is ok. I just need the help. Here are the questions.
1. What is the purpose of the lab, the importance of the topic, and the question you are trying to answer?

2. What is your hypothesis (or hypotheses) for this experiment?

3. What methods are you using to test this (or each) hypothesis?

4. Locate the data and observations collected in your lab guide. What are the key results? How would you best summarize the data to relate your findings?

5. Do you have quantitative data (numerical results or calculations)? Do you have qualitative data (written observations and descriptions)? How can you organize this date for your report?

6. What do the key results indicate?


7. If you constructed graphs, what trends do they indicate in your data?


8. Were there any problems with the experiment or the methods? Did you have any surprising results?

9. What do the results tell you about your hypothesis(es)?

10. How do the data support your claim above?

11. If you could repeat the experiment and make it better, what would you do differently and why?

Answers

Thermal energy flows from hot to colder bodies and is determined by the process of calorimetry.

What is thermal energy?

Thermal energy is the energy transfer process which occurs as a result temperature difference between two bodies.

Thermal energy flows from hot to colder bodies.

The quantity of Heat transfer is determined using a calorimeter.

The calorimeter works on the principle of conservation of energy. The principle of the calorimeter is stated as follows:

Heat lost = Heat gained

The quantity of Heat, q = mass × specific heat capacity × temperature difference

Therefore, it can be concluded that thermal energy flows from hot to colder bodies.

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Answer:

I did this earlier, here's what I put.

1. What is the relation between distance and speed?
a) distance= speed x time
b) distances speed / time
c) distance= time / speed
d) None of these​

Answers

Answer:

option no b is right answer

Answer:

b

Explanation:

please help, I'm giving brainliest. Explain the term'wear acid'.​

Answers

Acids that give high concentration of H+ ions on ionisation in aqueous solution are said to be strong acids and acids which give less H+ ions on ionisation in aqueous solution are said to be weak acids.


Weak acids are acids that don't completely dissociate in solution. In other words, a weak acid is any acid that is not a strong acid. The strength of a weak acid depends on how much it dissociates: the more it dissociates, the stronger the acid.

write the formula for lead oxide.

Answers

Answer:

Lead(II) oxide

Explanation:

Lead(II) oxide, also called lead monoxide, is the inorganic compound with the molecular formula PbO. PbO occurs in two polymorphs: litharge having a tetragonal crystal structure, and massicot having an orthorhombic crystal structure. Modern applications for PbO are mostly in lead-based industrial glass and industrial ceramics, including computer components. It is an amphoteric oxide.[3]

IUPAC nameLead(II) oxide

Other namesLead monoxideLithargeMassicotPlumbous oxideGalena

PreparationPbO may be prepared by heating lead metal in air at approximately 600 °C (1,100 °F). At this temperature it is also the end product of oxidation of other oxides of lead in air:[4]Thermal decomposition of lead(II) nitrate or lead(II) carbonate also results in the formation of PbO:

2 Pb(NO3)2 → 2 PbO + 4 NO2 + O2PbCO3 → PbO + CO2PbO is produced on a large scale as an intermediate product in refining raw lead ores into metallic lead. The usual lead ore is galena (lead(II) sulfide). At a temperature of around 1,000 °C (1,800 °F) the sulfide is converted to the oxide:[5]

2 PbS + 3 O2 → 2 PbO + 2 SO2Metallic lead is obtained by reducing PbO with carbon monoxide at around 1,200 °C (2,200 °F):[6]

PbO + CO → Pb + CO2

pls brainlest meh

one revolution of the moon around earth takes_______ days.

Answers

Answer:It’s important to know WHY. Great explanations are what makes Brainly awesomeExplain everything. Imagine that the person who was asking, knows nothing at all so you need to start from the very beginningAlways include the steps and/or background required to get to the final answer. Let’s help other people understand and solve future problems on their ownShow all the calculation if it is a numerical question.

Explanation:

A 0.205 g sample of CaCO3 (Mr = 100.1 g/mol) is added to a flask along with 7.50 mL of 2.00 M HCl. CaCO3(aq) + 2HCl(aq) → CaCl2(aq) + H2O(l) + CO2(g)Enough water is then added to make a 125.0 mL solution.

Answers

The volume of the NaOH used is calculated as 14 mL.

What is stoichiometry?

The term stoichiometry has to do with the calculation of the amount of substance in a reaction using mass - mole or mass - volume relationship.

Here;

Number of  moles of CaCO3 = 0.205 g/100.1 = 0.00205 moles

Number of  moles of HCl = 2.00 M * 7/1000 L = 0.014 moles

2 moles of HCl reacts with 1 mole of CaCO3

x moles of HCl reacts with 0.00205 moles of CaCO3

x = 0.00205 moles * 2/1 = 0.0041 moles

Hence HCl is the excess reactant

Amount of excess HCl =  0.014 moles -  0.0041 moles = 0.0099 moles

Concentration of excess HCl reacted = 0.0099 moles/125 * 10^-3 = 0.0792 M

Using;

CAVA/CBVB = NA/NB

CAVANB = CBVBNA

VB = CAVANB/CBNA

VB = 0.0792 M * 10 mL * 1/ 0.058 M

VB = 14 mL

Missing parts;

A 0.205 g sample of caco3 (mr = 100.1 g/mol) is added to a flask along with 7.50 ml of 2.00 m hcl. caco3(aq) + 2hcl(aq) → cacl2(aq) + h2o(l) + co2(g) enough water is then added to make a 125.0 ml solution. a 10.00 ml aliquot of this solution is taken and titrated with 0.058 m naoh. naoh(aq) + hcl(aq) → h2o(l) + nacl(aq) how many ml of naoh are used?

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The dark areas on the map show the distribution of coral reefs around the world. What explanation best
describes why the distribution of coral reefs is limited to the areas shown on the map? ( marine science)

- Competition for space is lowest in waters along the equator.
- Equatorial waters provide some of the clearest water for symbiotic algae to pro
pce energy,
- Predation is lowest in areas along the equator because of increased rates of decomposition.
- The corals need the strong water currents found here in order to find sufficient mates.

Answers

Answer:

I think is D not sure

Explanation:

In an ecosystem, the corals need the strong water currents found here in order to find sufficient mates.

What is an ecosystem?

Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.

Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.

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Which property of liquids creates a meniscus in
glass tubes as seen in the picture?
O adhesion
O
cohesion
O melting point
polarity
ANSWER IS ADHESION

Answers

The property of liquid that create meniscus in glass tubes is Adhesion

What is Adhesion?

Adhesion is the property of liquid in which two different or disimillar molecules or surfaces to cling to each other. For example, solids have a very high cohesive properties and this make them not to stick to the surfaces they come in contact.

Therefore, Adhesion property of liquids creates a meniscus in glass tube.

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Answer:

Adhesion

Explanation:

The ion with 86 electrons, 142 neutrons, and a 4+ charge

Answers

[tex]\qquad\qquad\huge\underline{{\sf Answer}}♨[/tex]

The ion had 4+ charge when it had 86 electrons, so it should have no charge on it if there are 4 more electrons and the atom will be neutral.

And since we know that number of electrons in a neutral atom is equal to Atomic Number of that atom.

So, at neutral phase, it had 86 + 4 = 90 electrons

hence, our required atom is : Thorium

And it's ion will be ~[tex]\sf Th^{4+} [/tex]

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A 5.00 L flask at 25˚ C contains 0.200 mol of Cl2 . What is the pressure in the flask?

Answers

The pressure of a 5.00 L flask at 25˚ C that contains 0.200 mol of Cl2 is 0.98atm.

How to calculate pressure?

The pressure of a gas can be calculated by using the following expression:

PV = nRT

Where;

P = pressureV = volumen = number of molesR = gas law constantT = temperature

P × 5 = 0.2 × 0.0821 × 298

5P = 4.893

P = 4.893 ÷ 5

P = 0.98atm

Therefore, the pressure of a 5.00 L flask at 25˚ C that contains 0.200 mol of Cl2 is 0.98atm.

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Answer:

Your answer would be:
0.98atm.




Explanation:

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What are the processes that lead to the formation of sedimentary rocks? I WILL GIVE BRAINLIEST

A.weathering and erosion followed by dispersion.
B.volcanic eruptions followed by dispersion,
C. volcanic eruptions followed by compaction
D.weathering and erosion followed by compaction

Answers

Answer:

erosion, weathering, dissolution, precipitation, and lithification So,D.weathering and erosion followed by compaction

Explanation:

mark me brainliest!!

CH2CH3
CH3CH2-C-CH2CH3
CH3
what’s the IUPAC name?

Answers

Answer:
CH2CH3 - methyl-pentane
CH3CH2-C-CH2CH3 - 2-methyl-4hexyne
CH3- methyl

The text above says that many acids taste sour, but also states that oranges and tomatoes contain acid. Suggest at least one reason why these fruits don't taste sour

Answers

Fruits don't taste sour because of less hydrogen ions and less acid.

Why these fruits taste sour?

Scientists discovered that pulp from sour fruit contains more hydrogen ions, which leads sour taste while on the other hand, the sweeter fruit-like pineapples has pulp that contains fewer hydrogen ions, leading to less acidic and sweeter in taste.

So we can conclude that fruits don't taste sour because of less hydrogen ions and less acid.

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Suppose that a car's starter motor draws 221 A of current for 6.20 s to start the car. What mass of Pb is oxidized in the lead–acid battery to supply this much electricity?

1.47 grams
Actually, I figured it out., here is the answer in case anyone is wondering:
It has two electrons in the process and Q is 1370.2 (Q= I*T= 221*6.2=1370.2) this gets to 1370.2/192736 (the number on the denominator is due to that fact that there are two electrons involved) That equals 0.007 Mols, and then using the grams per mol from the periodic table for lead, we get that value is equal to 1.47 grams.

Answers

The lead acid battery produces energy by oxidation of lead. The amount of lead oxidized in this case is 1.47 g.

What is lead acid battery?

The lead acid battery is the common accumulator that we have in use. It is made up of a cell that contains lead electrodes in an acid.

The oxidation of lead occurs according to thr equation;

Pb(s) ----> Pb^2+(aq) + 2e

If 207 g of Pb is oxidized by 2(96500)C

x g of lead is oxidized by (221 * 6.20) C

x = 207 g * (221 * 6.20) C/2(96500)C

x = 1.47 g

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1. How many joules of heat are necessary to melt 500 g of ice at its freezing point?

Answers

Answer: To melt 500 g of ice, 4000 joule of heat is required.

Explanation:

I love the helps

The energy required to melt one gram of ice is 334 J. Then the heat energy required to melt 500 g of ice into water is 1.6 × 10⁵ J.

What is heat of fusion ?

The change in energy associated with a phase change or any chemical reaction is called enthalpy change. Then, heat energy required to melt or freeze the substance.

The heat of fusion of ice is 334 J/g. Therefore, the heat energy required to melt the 1 g of ice is 334 J. Now the equation being used to  find the energy for m g of ice to melt is:

q = mHf.

Hf = 334J/g

m = 500 g

q = 500 × 334 J/g = 1.6 × 10⁵ J

Therefore, the heat energy needed to melt 500 g of ice to water is 1.6× 10⁵ J.

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Which statement describes a seismic wave during an earthquake?

A.
The wave changes directions as it is pulled by gravity.

B.
The wave changes speed as it moves through different materials.

C.
The wave loses energy to the oceans when it comes in contact with the water.

D.
The wave reflects off the surrounding rocks as it moves through the outer core.

Answers

Based on their nature of waves, seismic waves changes speed as it moves through different materials.

What are seismic waves?

Seismic waves are the waves that are produced and travel through the earth crust during an earthquake.

Seismic waves are often described as elastic waves which is the energy caused by a sudden breaking of rock within the earth's crust.

Seismic waves can travel at different speeds through different types of rock, bouncing back or changing direction.

Therefore, the correct statement which describes a seismic wave during an earthquake is that the wave changes speed as it moves through different materials.

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what makes the geometry of the tin(4) hydride to have a grater stability?

Answers

wet seving has ben

Explanation:

1. wet seving has been propsed as amethofolog to study aggregete stability aganist watet erosion

73.5 mol of P4O10 contains how many moles of P ? moles of P:

Answers

Answer:

294 moles of P

Explanation:

For every 1 mol of P4O10 contains 4 mol of P

so;

73.5 mol P4O10 × 4 mol P

1 mol P4O10

= 73.5 × 4

= 294 moles of P

73.5 mol of [tex]P_4O_{10}[/tex] contains 294 moles of P. In 1 mole of [tex]P_4O_{10}[/tex], there are 4 moles of P.

The International System of Units (SI) uses the mole (abbreviated as mol) as its basic unit to measure the amount of a substance. It is mostly used in chemistry and is defined as the volume of a substance that contains exactly 12 grammes of pure carbon-12 in terms of atoms (or equivalent amounts of molecules, ions, or particles). The fundamental notion that atoms combine in whole-number ratios to form compounds serves as the foundation for the concept of the mole. It makes it simple for scientists to convert between a substance's mass and the quantity of atoms or molecules it contains.

In 1 mole of [tex]P_4O_{10}[/tex], there are 4 moles of P.

=4 × 73.5 moles of P.

= 294 moles of P

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Set up a cell that has a Mg electrode in a 1.0 M aqueous Mg2+ solution on the left side and a Cu electrode in a 1.0 M aqueous Cu2+ solution on the right side. Add the salt bridge. What is the balanced net ionic equation for this reaction? Include physical states.

Answers

The cell notation is; Cu^2+(aq)/Cu(s)//Mg(s)/Mg^2+(aq). The standard cell notation helps us to write the cell equation easily.

What is electrochemical cell?

The electrochemical cell involves the transformation of chemical energy to electrical energy in an electrochemical cell. The two electrodes involved are the cathode and the anode.

In this case, the Mg is the anode and the Cu is the cathode hence the cell notation is; Cu^2+(aq)/Cu(s)//Mg(s)/Mg^2+(aq).

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Before tackling this problem, be sure you know how to find the antilog of a number using a scientific calculator.
A solution has a pH of 5.4. Write the formula you will use to calculate the [H+] and then show all your work leading to the determination of [H+].

Answers

Question:-

A solution has a pH of 5.4, the determination of [H+].

Given :- pH:- 5.4 pH = - log[H+]

To find :- concentration of H+

Answer:- Antilog(-5.4) or 4× 10-⁶

Explanation:- Formula:- pH = -log H+

Take negative to other side

-pH = log H+

multiple Antilog on both side

(Antilog and log cancel each other )

Antilog (-pH) = [ H+ ]

New Formula :- Antilog (-pH) = [+H]

Now put the values of pH in new formula

Antilog (-5.4) = [+H]

we can write -5.4 as (-6+0.6) just to solve Antilog

Antilog ( -6+0.6 ) = [+H]

Antilog (-6) × Antilog (0.6) = [+H]

[tex]Antilog (-6) = {10}^{ - 6} , \\ Antilog (0.6) = 4 [/tex]

put the value in equation

[tex] {10}^{ - 6} \times 4 = [H+] \\ 4 \times {10}^{ - 6} = [H+][/tex]

A 1.0 L solution AgNO3(ag) of and Pb(NO3)2(aq) has a Agconcentration of 0.020 M and a Pb2+ concentration of
0.0010 M. A 0.0010 mol sample of K2SO4(s) is added to the solution. Based on the information in the table above,
which of the following will occur? (Assume that the volume change of the solution is negligible.)
No precipitate will form.
(B) Only Ag2SO4(s) will precipitate.
(C) Only PbSO4(s) will precipitate.
(D) Both Ag2SO4(s) and PbSO4(s) will precipitate.

Answers

With an Ag concentration of 0.020 M and a Pb2+ concentration of

0.0010 M, Only PbSO4(s) will precipitate,

Option C is correct

What will precipitate?

Generally, the equation for the Chemical Reaction  is mathematically given as

Ag2SO4--->2Ag++SO4^{-2}

Where

PbSO4--->Pb2+ +SO4^{-2}

Therefore

Ag2SO4=[0.02^2[0.001]]

Ag2SO4=4*10^{-7}

and

PbSO4=[0.001^2[0.001]]

PbSO4=4*10^{-6}

In conclusion,Since PbSO4>>PAg2SO4, Only PbSO4(s) will precipitate.

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When barium nitrate solution is added to aqueous sulfurous acid a white precipitate forms what is the name of that white precipitate Use the following compound interest formula to complete the problem. a = p (1 startfraction r over n endfraction) superscript n superscript t sandra has two credit cards, p and q. card p has a balance of $726.19 and an interest rate of 10.19%, compounded semiannually. card q has a balance of $855.20 and an interest rate of 8.63%, compounded monthly. assuming that sandra makes no purchases and no payments with either card, after four years, which cards balance will have increased by more, and how much greater will that increase be? a. card qs balance increased by $7.22 more than card ps balance. b. card qs balance increased by $6.69 more than card ps balance. c. card ps balance increased by $3.43 more than card qs balance. d. card ps balance increased by $0.80 more than card qs balance. please select the best answer from the choices provided a b c d Zoe planted a walnut tree. Every week, she measures the tree and records itsgrowth. On the first week, the tree was 27 1/2 inches tall. On the second week, it was29 1/4 inches tall. On the third week, it was 31 1/3 inches tall. How much did the treegrow from the first week until it was measured on the third week? Show your work. Find 76% of 147 please answer HELP MEEEEEEEEEEEEEEEE In the figure below, k || l and m || n. Find the values of y and x. Which of the following is true about the decimal form of the number? 25/225A It is neither a terminating decimal nor a repeating decimal.B It is both a terminating decimal and a repeating decimal.C It is a repeating decimal the motion of _____waves can tear apart structures build on earth surfaces In which S.E.Asian country would you find a large population of Tagalog people? What were the most significant effects of the Market Revolution between 1800 and 1860?This is for APUSH VLACS 3.03. PLEASE HELP!! 5. Complete the following question with the correct form of poder:____mis padres venir a cenar?PuedoPuedenPodis Puedes what three ratios are equivalent to 6/18 What is the meaning of 'Pride always goes before a fall'? Where do many of the rivers in China and southeast Asia begin . WILL GIVE BRAINLIEST FOR THE BEST ANSWER . THANKS Convert the following fraction to a decimal 20/16 13. For three control stations, there should be how many start buttons in parallel with the auxiliary contact?A. sixB. threeC. oneD. nine Please answer this relatively quickly, I'm not in very much of a rush but would like to get this done. What's the guiding principle or reasoning of hammurabi's codea. retribution b. equality c. chaos d. leniency a) the cost of. kg oranges is rs 350 how many kg of oranges can be bought for rs 665b.). A car travel for 50 km.with the help of 5 litres of petrol how many litres of petrol is reauired to travel 120 km What is a key differentiator of Conversational Artificial Intelligence (AI)?