True or false, rewrite it to make it true.
To balance a chemical equation, only the subscripts of a reactant and product can be changes

Answers

Answer 1

Answer:

false

Explanation:


Related Questions

3
1 point
The formula for acetic acid is HC H302
What is the percent composition of carbon in acetic acid?
molar mass of the element you need to find a percentage of
molar mass of the entire substance
40.0%
20.0%
33.3
41.4%
Previous

Answers

Not sure but I think the last one

A solution is made from 0.5 moles of sodium dichromate. If the volume of the solution is 1 Liter, what is the molarity of the solution
2 M
0.5 M
4 M
1 M

Answers

Answer:

4 M

Explanation:

See the steps and explanation in the picture

Which simple machine is best used to split apart an object

A. A screw

B. A lever

C. A wedge

D. A pulley

Answers

Answer:

its A screw :))) your welcome

A screw, hope that helps.;)

cell and chromosome characteristics? ​

Answers

Answer:

hope the inserted image will help :)

Explanation:

Answer:  Both are centered inside the nucleus.

Explanation: The characteristics between cells and chromosomes are that they both are centered inside the nucleus (which is a cell). This characteristic applies to both plant and animal cells.

Conduction is the transfer of energy by the movement of currents. ture or false

Answers

conduction is the transfer of energy by the movement of currents(it is true)

Answer:

false

Explanation: Its actually Convection

Hiiii :D !! I need help please :>

Answers

Answer:

7 false

8 True

9a

:)

Explanation:

2.54 mL of ethanol to mol ethanol

Answers

Cowewewwws krakensbbejexbdj

what is the name of this structure here please and thanks ​

Answers

Answer:

look at the file that the other person sent

Difference between sublimate and distillate

Answers

Answer:

 distillate is the liquid that has been condensed from vapour during distillation; normally a purified form or a fraction of an original liquid while sublimate is (chemistry) a product obtained by sublimation

Determine the m/v% of a solution where 5 g of sugar is dissolved in enough water to yield 250 mL of total solution

Answers

Answer:

2 %m/v

Explanation:

Step 1: Given data

Mass of sugar (solute): 5 gVolume of solution: 250 mL

Step 2: Calculate the %m/v of sugar in the solution

We will use the following expression.

%m/v = mass of sugar/volume of solution × 100%

%m/v = 5 g/250 mL × 100% = 2 %m/v

This means that there are 2 grams of sugar every 100 milliliters of solution.

PLEASE PLEASE HELP ME!!!A 450 ml gas sample has a pressure of 1.25 atm at 65 °C. What is the temperature, in °C, at which the gas will expand to 865
mL with a pressure of 0.89 atm?

Answers

Answer:

89°C

Explanation:

Combined Gas Law (P₁V₁)/T₁ = (P₂V₂)/T₂

(1.25 atm)(450 mL)/(65°C) = (0.89 atm)(865 mL)/T₂

8.653846154 = 769.85/T₂

T₂ = 769.85/8.653846154

T₂ = 88.96044444 = 89°C

Ok so N2+O2=2NO and my delta h is 180.5 kJ I need to know. If I react 10 g of nitrous gas with excess oxygen how many grams of Nitrogen monoxide will be produced

Answers

Answer:

21.6 grams

Explanation:

N₂ + O₂ → 2NO

First we convert 10 g of N₂ into moles, using its molar mass:

10 g ÷ 28 g/mol = 0.36 mol N₂

Then we convert 0.36 moles of N₂ into moles of NO, using the stoichiometric coefficients of the balanced reaction:

0.36 mol N₂ * [tex]\frac{2molNO}{1molN_2}[/tex] = 0.72 mol NO

Finally we convert 0.72 NO moles into grams, using its molar mass:

0.72 mol NO * 30 g/mol = 21.6 g

Help plzz pick on the picture

Answers

The answer to this question would most definitely be the last one

If Jonathan went skateboarding from 4:00 PM to 4:30 PM and traveled 450 meters, what was his average speed?

Answers

20 m Increase by five

Which category is our Sun located?
Question 2 options:

White Dwarfs

Supergiants

Giants

Main Sequence

Answers

Answer:

main sequence is the correct answer of your question

The sun is located in the main sequence in the solar system of the universe. Option D is correct.

What is a solar system?

The solar system is a gravitational bound system that consists of some planets like the moon, earth, Neptune, venus, mars, mercury, Saturn, and Uranus these revolve around on the orbit of space.

The sun is the center of all the planets that is all planets revolve around the sun only as it is the biggest star for all the planets and the majority of the mass of the planet is the sun only.

Therefore,  Option D is the correct sun located in the main sequence in the solar system of the universe.

Learn more about the solar system, here:

https://brainly.com/question/12075871

#SPJ2

3. Which of the following describes the author's purpose in the text? R1.6
A.
to encourage students not to think about money when they're
choosing a degree or career to pursue
B. to stress the importance of viewing college as a way to develop jobs
skills, as well as determine what is important to you
C. to discourage students from pursuing careers in business, as people
are generally dissatisfied with their lives
D. to encourage students to pursue careers that help other people, as
they are usually the most enjoyable and meaningful

Answers

Answer:

B

Explanation:

I took the assessment

I need help with this​

Answers

Answer:

1. D.

2. G.

3. F.

4. E.

5. J.

6. I.

7. C.

8. H.

9. A.

10. B.

Explanation:

Answer:

1D

2G

3F

4E

5J

6I

7C

8H

9A

10B

Explanation:

1D

2G

3F

4E

5J

6I

7C

8H

9A

10B

If H2O is removed from this reaction, what will happen? 2H2 + O2 + 2H20 O A. The product-favored reaction will stop. B. The reactants will react to produce more H2O. C. The equilibrium will not change. D. The reaction will be reactant-favored.​

Answers

Answer:

B. The reactants will react to produce more H₂O

Explanation:

Given the reaction

2H₂+O₂→2H₂O

A decrease in the amount of H₂O will cause the reaction to produce more H₂O. When you change something, the reaction seeks to undo that change.

2nd attempt
*
Feedback
See Periodic Table O See Hint
Calculate AEfor a system that absorbs 599,0 kJ of heat from its surroundings
and does 3510 kJ of work on its surroundings.

Answers

Answer:

-2911 kJ

Explanation:

Step 1: Given data

Heat absorbed by the system (Q): 599.0 kJ (By convention, when the systems absorbs heat, Q > 0)Work done by the system on the surroundings (W): -3510 kJ (By convention, when the systems does work on the surroundings, W < 0)

Step 2: Calculate the change in the internal energy (ΔE)

We will use the following expression.

ΔE = Q + W

ΔE = 599.0 kJ + (-3510 kJ) = -2911 kJ

The table shows the rate of reaction for two unknown time intervals during a chemical change.

Reaction Rates
Time Intervals (s) Rate (M/s)
T1 1.8 x 10−6
T2 1.0 x 10−6

Which of the following is true for the two time intervals? (5 points)

Select one:
a. T1 is longer than T2, and the concentration of reactants at the end of T1 is lower than that of T2.
b. T1 is longer than T2, and the concentration of products at the end of T1 is lower than that of T2.
c. T1 is shorter than T2, and the concentration of reactants at the end of T1 is higher than that of T2.
d. T1 is shorter than T2, and the concentration of products at the end T1 is higher than that of T2.

Answers

Answer:

i think a is the right answer

Methane reacts with chlorine to produce methyl chloride and hydrogen chloride. Once formed, the methyl chloride may undergo further chlorination to form methylene chloride (CH2Cl2), chloroform, and carbon tetrachloride. A methyl chloride production process consists of a reactor, a condenser, a distillation column, and an absorption column. A gas stream containing 80.0 mole% methane and the balance chlorine is fed to the reactor. In the reactor a single-pass chlorine conversion of essentially 100% is attained, the mole ratio of methyl chloride to methylene chloride in the product is 5:1, and negligible amounts of chloroform and carbon tetrachloride are formed. The product stream flows to the condenser. Two streams emerge from the condenser: the liquid condensate, which contains essentially all of the methyl chloride and methylene chloride in the reactor effluent, and a gas containing the methane and hydrogen chloride. The condensate goes to the distillation column in which the two component species are separated. The gas leaving the condenser flows to the absorption column where it contacts an aqueous solution. The solution absorbs essentially all of the HCl and none of the CH4CH4 in the feed. The liquid leaving the absorber is pumped elsewhere in the plant for further processing, and the methane is recycled to join the fresh feed to the process (a mixture of methane and chlorine). The combined stream is the feed to the reactor.

Required:
a. Choose a quantity of the reactor feed as a basis of calculation, draw and label a flowchart, and determine the degrees of freedom for the overall process and each single unit and stream mixing point. Then write in order the equations you would use to calculate the molar flow rate and molar composition of the fresh feed, the rate at which HCl must be removed in the absorber, the methyl chloride production rate, and the molar flow rate of the recycle stream. Do no calculations.
b. Calculate the quantities specified in Part (a), either manually or with an equation-solving program.
c. What molar flow rates and compositions of the fresh feed and the recycle stream are required to achieve a methyl chloride production rate of 1000 kg/h?

Answers

Your gonna half to space this out in order for me to answer if you don’t mind. I’ll answer in the comments

Please help!

Karl-Anthony is trying to plate gold onto his silver ring. He constructs an electrolyte cell using his ring as one of the electrodes. He runs this cell for 90.6 minutes at 213.8 mA. How many moles of electrons were transferred in this process?

Answers

Answer:

0.012 mole of electron

Explanation:

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

Time (t) = 90.6 minutes

Current (I) = 213.8 mA

Number of mole of electrons =?

Next, we shall convert 90.6 mins to seconds. This can be obtained as follow:

1 min = 60 s

Therefore,

90.6 mins = 90.6 × 60

90.6 mins = 5436 s

Next, we shall convert 213.8 mA to A. This can be obtained as follow:

1000 mA = 1 A

Therefore,

213.8 mA = 213.8 mA × 1 A / 1000 mA

213.8 mA = 0.2138 A

Next, we shall determine the quantity of electricity used in the process. This can be obtained as follow:

Time (t) = 5436 s

Current (I) = 0.2138 A

Quantity of electricity (Q) =?

Q = it

Q = 0.2138 × 5436

Q = 1162.2168 C

Next, the equation for the reaction.

Au⁺ + e —> Au

From the balanced equation above,

1 mole of electron was transferred.

Recall:

1 faraday = 96500 C = 1 e

Thus,

96500 C of electricity is needed to transfer 1 mole of electron.

Finally, we shall determine the number of mole electrons transferred by the application of 1162.2168 C of electricity. This can be obtained as follow:

96500 C of electricity is needed to transfer 1 mole of electron.

Therefore,

1162.2168 C of electricity will transfer = 1162.2168 / 96500 = 0.012 mole of electron

Thus, 0.012 mole of electron was transferred in the process.

Following are the calculation to the moles of electrons that transferred in the process:

Given

Current flows

time[tex]= 90.6\ min = 90.6 \times 60\ sec= 5436 \ sec\\\\[/tex]

For Step 1:

Calculating the Total charge flown in the given time:

For Step 2:

Charge on a single electron

So:

Following are the calculation to the charges of electrons:

Following are the calculation to the electrons transferred:

[tex]=\frac{(726.38\times 10^{19})}{ (6.023 \times 10^{23})}\\\\= 120.60\times 10^{-4}\ moles\\\\[/tex]

Learn more:

brainly.com/question/12161663

Which equation represents neutralization?
(1 ) 6Li(s)+N 2 (g)=>2Li3N(s)(2) 2Mg(s)+O2(g)=>2MgO(s) (3) 2KOH(aq)+H2SO4(aq) =>K 2 SO 4 (aq)+2H 2 O(l)
(4) Pb(NO 3 ) 2 (aq)+K 2 CrO 4 (aq) => 2KNO 3 (aq)+PbCrO 4 (s)

Answers

Answer:

3) 2KOH(aq) + H2SO4(aq) ⇒ K2SO4(aq) + 2H2O(l)

Explanation:

KOH is a strong base and a H2SO4 is a strong acid. The two react in a neutralization reaction, producing a salt and water.

A student was directed to convert the mass of a boulder from kg to pounds.
Conversion factor: 1 pound = 454 g
The mass is 22 kg. The student calculated the weight to be 0.048 pounds.
Is this correct? If not, what went wrong?

Answers

Answer:

Incorrect

Explanation:

Given that,

The mass of a boulder, m = 22 kg

We need to find the weight of the student in pounds.

We know that,

1 pound = 454 g

or

1 g = (1/454 pounds)

22 kg = 0.022  grams

So,

0.022 grams = [tex]\dfrac{0.022}{454}\ pounds[/tex]

= 0.000048 pounds

The student says the weight is 0.048 pounds. It means he was incorrect.

How many moles of caffeine are in 130 mg of caffeine coffee?

Answers

Answer:

0.00067mols

Explanation:

firs convert 130mg to grams which is 0.13g, then find the molar mass of caffeine which is 194.19g/mol.

0.13g/194.19gmol=0.0067mols

NEED A AWNSER ASAP PLEASE!!!!

Answers

Last one cuz it stay in the air for a while then swings making it kinetic

Answer:

2. the second one is the answer

Because it shows both potential and kinetic energy

Select all of the following statements that are true. Multiple answers are possible
Cells are made of cells

All living things are made of cells

Cells are the smallest living thing.

Only prokaryotic organisms have cells

Answers

the statements that are true are all living things are made of cells & cells are the smallest living thing. hopes that helps!! :)

Help guys
Please

Please help me if u know

Answers

Because they don’t have the same elements i guess, what is question 1?
They have different density

How many molecules of CO2 at standard temperature and pressure in 5.4 moles of CO2

Answers

Answer:

3.25×10²⁴ molecules.

Explanation:

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

Number of mole of CO₂ = 5.4 moles

Number of molecules of CO₂ =?

The number of molecules of CO₂ in 5.4 moles can be obtained as follow:

From Avogadro's hypothesis,

1 mole of CO₂ = 6.02×10²³ molecules

Therefore,

5.4 moles of CO₂ = 5.4 × 6.02×10²³

5.4 moles of CO₂ = 3.25×10²⁴ molecules

Thus, 5.4 moles of CO₂ contains 3.25×10²⁴ molecules.

Combustion Analysis of an unknown hydrocarbon resulted in the capture of 216.00 g of water vapor and 440.00 g of CO2. The total mass of the hydrocarbon before combustion was 144 g.

(1. How many moles of carbon dioxide are present after combustion?)

(2. What is the empirical formula for the unknown hydrocarbon?)

(3. How many water molecules does the water vapor trap capture?)

(4. The gram-formula mass for the unknown hydrocarbon was determined to be 72 g/mol. How many moles of the unknown hydrocarbon were present in the original sample?)

(5. infrared spectral analysis determines that the unknown hydrocarbon does NOT contain oxygen. How many moles of O2 are used in combusting the unknown sample?)

Answers

1: 10 mol CO2

2: C10H24

3: 12 mol H2O

4: 0.5 mol

5: 16 mol O2

The compound is C5H10.

From the information  available in the question;

Number of moles of carbon dioxide = 440.00 g/44 g/mol = 10 moles

Number of moles of water vapor = 216.00 g/18 g/mol = 12 moles

Mass of carbon = 10 moles × 12 g/mol = 120 g of carbon

Moles of hydrogen = 12 moles  × 2 g/mol = 24 g of hydrogen

Number of moles of carbon = 120 g/12 g/mol = 10 moles

Number of moles of hydrogen = 24 g/1 g/mol =24 moles

Divide through by the lowest number of moles =

C - 10/10   H - 24/10

C - 1          H - 2

The empirical formula is CH2

Molar mass of the compound = 72 g/mol

[12 + 2(1)]n = 72

14n = 72

n = 5

The compound is C5H10.

Learn more about hydrocarbons: https://brainly.com/question/1195122

Other Questions
y1xIf y=7 when x=64find, x when y=8 Which set of sides will make a triangle? 1 cm, 3 cm, Icm 10 cm, 5 cm, 9 cm 5 cm, 2 cm, 3 cm 10 cm, 3 cm, 4 cm 10) It's been so long now that I don't remember the slang students used back in the day Which statement best explains why this quotation from the selection includes slang? A) The word slang actually appears in the quotation. B) This quotation from the selection does not include slang. The word it's is a contraction and is therefore informal D The phrase back in the day is informal and meant to be funny. Which of the following is the best description of an element?1. A substance that cannot be broken down into simpler substances2. A naturally occurring mineral made of more than one substances3. A small particle made with a specific chemical composition4. A collection of atoms that have different abilities when joined together Charles, Clarissa, and Francine all work in Manufacturing. The table shows the breakdown of one day for each employee.CharlesClarissaFrancine9:00 a.m.11:00 a.m.meeting with production team and first-line supervisor of production11:00 a.m.12:00 p.m.meeting with finance team1:00 p.m.2:00 p.m.meeting with materials engineer for new project2:00 p.m.5:00 p.m.e-mails and reports6:00 a.m.7:00 a.m.review lists of damaged equipment8:00 a.m.11:00 a.m.fix damaged machines in the hospital laboratory12:00 p.m.2:00 p.m.fix damaged machines on the hospital floor8:00 a.m.9:00 a.m.decide on which products need assessment9:00 a.m.12:00 p.m.test products on factory floor against standards1:00 p.m.4:00 p.m.write reports and recommendations on tested productsWhich correctly identifies the career of each person?A.)Charles is a First Line Supervisor of Production, Clarissa is an Industrial Machinery Mechanic, and Francine is a Product Safety Engineer.B.)Charles is a Product Safety Engineer, Clarissa is a First Line Supervisor of Production, and Francine is an Industrial Machinery Mechanic.C.)Charles is an Industrial Production Manager, Clarissa is a Medical Equipment repairer, and Francine is a Quality Control Analyst.D.)Charles is a Quality Control Analyst, Clarissa is an Industrial Production Manager, and Francine is a Medical Equipment Repairer. CAN SOMEONE PLEASE TELL ME WHAT THIS WHEEL IS CALLED.WILL GIVE BRAINLIEST Subtract:8 1b, 12 oz. - 5 lb, 5 oz. How do you know if an equation represents a proportional relationship? What danger do the Lotus-Eaters pose to Odysseus men in the excerpt from the Odyssey, Part 1? Martin is making bracelets with yarn and has 4 yards of yarn. Each bracelet takes (1/6) of a yard of yarn. How many bracelets can he make? The cereal you ate for breakfast was most like grown in a_____.desertgrasslandtropical rainforest Besides Canada, what other areas did those escaping slavery go too? PLEASE HELP EMERGENCY!!!! 5 Filipe paid $250 for 5 video games. that were all the same price He used a deal that took $15 off his entire purchase. What was the original cost of each game? write a story about the picture you see you can also use the sentence starter if you want . How many beats will be in the measure? * Read this excerpt from The Myth of Hercules.Hercules was the son of the great god Zeus and a human woman named Alcmene. The goddess Hera did not like Alcmene and vowed to destroy Hercules when he was born. Hera sent two snakes to kill the baby as he lay in his crib, but Hercules was strong and strangled the snakes with his tiny hands before they could bite him with their sharp fangs.The excerpt gives clues that later in the story, Hercules will most likelyprove that he does not have heroic traits. seek revenge against the goddess Hera. make peace with the goddess Hera. show strength when facing obstacles. I Stayed Home From School TodayI"m staying home from school todayI'd rather be in bedpretending that I have a painthat's pounding in my head.I'll say I have a stomach acheI'll claim I have the fluI'll shiver like I'm coldand hold my breath until I'm blue.I'll fake a cough. I'll fake a sneeze.I'll say my throat is soreIf necessary I can throwa tantrum on the floorI'm sure I'll get away with itOf that, there's little doubtBut, even so, I really hope my students don't find out Read the passage and answer the questionWho is most likely to feel a personal connection to this poem?A) a parentB) a studentC) A teacherD) a principal write 11.3826 to the nearest thousand Which describes Phoenician traders?A) They traveled great distances over land.B)They traveled great distances by sea.C)They mostly traded within the Greek islands.D)They mostly traded with Asia Minor. Can someone help me its a spanish subject