The diagram shows the setup of an experiment. The observations of the experiment are listed in the table below the diagram. A beaker filled three-fourths with a liquid labeled colorless silver nitrate solution is shown. A small strip is shown inside the beaker. The strip is labeled copper strip. The title of the image is Experimental Setup. Experimental Observations Observation Description 1 Copper strip became thinner 2 Gray particles were deposited on the edge of the strip Which of the following is the correct explanation for one of the given observations? (4 points) Observation 2 is a result of nitrate ions moving into the solution. Observation 2 is a result of silver ions moving into the solution. Observation 1 is a result of copper atoms losing two electrons. Observation 1 is a result of silver atoms losing one electron.

Answers

Answer 1

Answer:

The answer is Observation 1 is a result of copper atoms losing two electrons.

Explanation:

The electrons result in the color change of the copper strip, causing the gray particles to join onto the metal.

The Diagram Shows The Setup Of An Experiment. The Observations Of The Experiment Are Listed In The Table
Answer 2

Answer:

C

Explanation:

Observation 1 is a result of the copper atoms losing two electrons. It came out as the right answer.


Related Questions

1. Look at yourself in the front of the spoon (the side where the food sits). What do you see?
The you see the image

Answers

Answer:

If you look at yourself in the front of the spoon, you see that the mirror forms an inverted real image.

Explanation:

The word 'concave' means to bend inwards.

A curved mirror is a mirror that has a curved reflecting surface.

The front side of the spoon is just like a concave mirror. If you look at yourself in the front of the spoon, you see that the mirror forms an inverted real image.

Concave mirrors produce real inverted image of an object only if it is placed further away from the mirror than the focal point.

Answer:

It shows me upside down like a ghost. OoooOooh

Explanation:

Boo

The density was of a solution of sulfuric acid is 1.285g/cm3 and it is 38.08% (by weight) acid. How many millimeters of the acid solution do you need to supply 125 grams of sulfuric acid?

Answers

Answer:

255.5cm³

Explanation:

A solution that is 38.08 % by weight has 38.08g of sulfuric acid per 100g of total solution. Thus, mass of solution you need to obtain 125g is:

125g H₂SO₄ × (100g solution / 38.08g H₂SO₄) = 328.3g of solution

As density of the solution is 1.285g / cm³, the volume of 328.3g is:

328.3g × (1cm³ / 1.285g) = 255.5cm³

An elements mass number is made up of the number of ____ in the nucleus.

protons and neutrons

electrons and neutrons

protons and electrons

atoms and molecules

Answers

Answer:

The answer is protons and nuetrons

Explanation:

Give some examples of how ultraviolet rays can be used

Answers

Answer:

One of the most common ways of producing UV light is passing an electric current through vaporized mercury or some other gas. This type of lamp is commonly used in tanning booths and for disinfecting surfaces. The lamps are also used in black lights that cause fluorescent paints and dyes to glow.Explanation:

NEED HELP
What is the temperature in kelvin of a gas if it is allowed to expand from 1.50 L to 4.50 L? The initial temperature is 10.0°C and pressure is constant throughout the change. Which equation should you use?

Answers

Answer:

Explanation:

V1/T1 =V2/T2    at constnant pressure

Answer:

c

Explanation:

WILL MARK BRAINLIEST IF GOOD EXPLANATION...

Ethyl acetate is a sweet-smelling solvent used in varnishes and fingernail polish remover. It is produced industrially by heating acetic acid and ethanol
together in the presence of sulfuric acid, which is added to speed up the
reaction. The ethyl acetate is distilled off as it is formed. The equation for the
process is as follows.

CH3COOH + CH3CH2OH --> CH3COOCH2CH3 + H2O

Determine the percentage yield in the following cases:
a. 68.3 g of ethyl acetate should be produced but only 43.9 g is recovered.
b. 0.0419 mol of ethyl acetate is produced but 0.0722 mol is expected. (Hint:
Percentage yield can also be calculated by dividing the actual yield in moles
by the theoretical yield in moles.)
c. 4.29 mol of ethanol is reacted with excess acetic acid, but only 2.98 mol of
ethyl acetate is produced.
d. A mixture of 0.58 mol ethanol and 0.82 mol acetic acid is reacted and 0.46
mol ethyl acetate is produced. (Hint: What is the limiting reactant?)

Answers

Answer:

a) 64.27%

b) 58%

c) ethanol is the limiting reactant

d) ethanol is the limiting reactant

Explanation:

We have to note that the expected yield is the theoretical yield while the actual mass or amount of product formed is the actual yield.

a) theoretical yield=68.3g

Actual yield= 43.9 g

Percentage yield= 43.9/68.3 ×100

Percentage yield= 64.27%

b) theoretical yield= 0.0722 moles

Actual yield = 0.0419

Percentage yield= 0.0419/0.0722 × 100

Percentage yield= 58%

c) note that the limiting reactant yields the least number of moles of product

Ethanol will be the limiting reactant since it is not present in excess.

d) from the reaction equation;

1 mole of acetic acid produces 1 mole of ethyl acetate

0.58 moles of ethanol produces 0.58 moles of ethyl acetate

1 mole of acetic acid yields 1 mole of ethyl acetate

Hence 0.82 moles of acetic acid yields 0.82 moles of ethyl acetate

Hence ethanol is the limiting reactant.

pls help as soon I will give brainlist

Answers

Presence of water and oxygen

You could coat the iron with paint to prevent water coming in contact with it.

Answer:

1) Conditions necessary for rusting are:

a) Presence of atmospheric oxygen or air

b)Presence of water or moisture

2) For protecting the iron gate, we can paint it because the paint will coat it and protect it from atmospheric oxygen and water.

3) Magnesium, Carbon and Oxygen (MgCO₃)

A 500ml bottle contains 2.50 moles of gas. What is the new volume when the number of miles is increased 5.00 moles?

Answers

Answer:

The new volume is 1,000ml

Explanation:

Mathematically, we know that the number of moles per ml(volume) should be constant irrespective of the increase.

Initially, we have a volume of 500 ml and number of moles of 2.5 moles

The ratio of the number of moles to the volume is 2.5/500 = 0.005 mole/ml

Now, this is expected to remain the same even if we have an increment.

let’s call the new volume x

0.005 mol/ml = 5 moles/x ml

x = 5/0.005 = 1,000 ml

Which of the following is true for a gas under conditions of very low temperature? PV ÷ nRT = 1, because all gases behave ideally at very low temperatures. PV ÷ nRT = 1, because the actual volume of the gas molecules becomes considerable. PV ÷ nRT > 1, because the low temperatures speed up the particles. PV ÷ nRT < 1, because particles are unable to overcome intermolecular attractions.

Answers

The correct answer is A

Which phrase describes a feature of a Mercator projection? is least commonly used sizes most features to scale presents longitude lines as parallel shows most accurately near the prime meridian

QUICK

Answers

Answer:

  presents longitude lines as parallel

Explanation:

The Mercator projection shows longitude lines as  parallel, hence greatly distorts sizes and distances near the poles. A useful feature is that a course of constant bearing shows as a straight line.

Answer:

C.) presents longitude lines as parallel

Explanation:

Took it on E2020

Element X is a solid that is brittle, lacks luster,and has six valence electrons. In which group on the Periodic Table would element X be found

Answers

Answer:

Sulfur?

Explanation:

Sulfur has 6 valence electrons and does not have luster.

at what temperature would 2.10moles of N2 gas have a pressure of 1.25atm and fill a 25.0 L tank

Answers

Answer:

[tex]\large \boxed{\text{-92 $^{\circ}$C}}[/tex]

Explanation:

We can use the Ideal Gas Law and solve for T.

pV = nRT

Data  

p = 1.25 atm

V = 25.0 L

n = 2.10 mol

R = 0.082 06 L·atm·K⁻¹mol⁻¹

Calculations

1. Temperature in kelvins

[tex]\begin{array} {rcl}pV & = & nRT\\\text{1.25 atm} \times \text{25.0 L} & = & \rm\text{2.10 mol} \times 0.08206 \text{ L}\cdot\text{atm}\cdot\text{K}^{-1}\text{mol}^{-1} \times T\\31.25&=&0.09847T\text{ K}^{-1}\\T& = &\dfrac{31.25}{\text{0.098 47 K}^{-1}}\\\\& = &\text{181 K}\end{array}[/tex]

2. Temperature in degrees Celsius

[tex]\begin{array} {rcl}T & = & (181 - 273.15) \, ^{\circ}\text{C}\\& = & -92 \, ^{\circ}\text{C}\\\end{array}\\\text{The temperature of the gas is $\large \boxed{\mathbf{-92 \, ^{\circ}}\textbf{C}}$}[/tex]

A 14.00-g piece of iron absorbs 1000 joules of heat energy, and its temperature changes from 25°C to 125°C. Calculate the specific heat capacity of iron.

Answers

Answer:

THE SPECIFIC HEAT OF IRON IS 0.714 J/g °C

Explanation:

Heat  absorbed = 1000 J

Mass of the piece of iron = 14 g

Temeperature changes = ( 125-25)°C= 100°C

specific heat of iron = unknown

To find the specific heat of iron in the question use the formula of heat

Heat = mass * specific heat * temperature change

Specific heat = Heat / mass * temperature change

Specific heat = 1000 / 14 * 100

Specific heat = 1000 / 1400

Specific heat = 0.714 J/g °C

So therefore, the specific heat of iron is 0.714 J/g °C

the wavelength of a light wave whose frequency 5.0x 10^9 s^-1 is

Answers

Answer:

wavelength = 6 cm .

Explanation:

frequency given = 5 x 10⁹ .

wavelength = velocity of light / frequency

= 3 x 10⁸ / 5 x 10⁹

= .06 m

= 6 cm

50 points - I need this really soon! plz help

The pictured compound has which bond?
A.) C = C and C −C
B.) C = C and C −H
C.) C −Cand C −H
D.) C −C, C −H, and C −O

Answers

Answer:

C.

Explanation:

Butane (C4H10) has 3 C-C bonds in the carbon chain and 10 C-H bonds

Butane ([tex]C_4H_10[/tex]) has 3 C-C bonds in the carbon chain and 10 C-H bonds

What is alkane?

Alkanes are saturated hydrocarbons. This means that their carbon atoms are joined to each other by single bonds.

Based on the diagram, butane is considered to be an alkane. It not only contains single covalent bonds, but also has carbon and hydrogen atoms present in its structure.

When comparing both structures to one another, isobutane is a branched chain, while butane is a linear chain.

Learn more about alkane here:

https://brainly.com/question/4260635

#SPJ2

Difference between rapid combustion and spontaneous combustion.

Answers

Answer: The difference between rapid combustion and spontaneous combustion...

Explanation:

Rapid combustion is a form of combustion, otherwise known as a fire, in which large amounts of heat and light energy are released, which often results in a flame.Whereas spontaneous combustion is the ignition of organic matter (e.g. hay or coal) without apparent cause, typically through heat generated internally by rapid oxidation.

What is the definition of a scientific theory

A) A method of learning that emphasizes reason as the way to understand the world.
B) A brief statement that summarizes past observations and predicts future ones.
C) A model that explains the underlying reasons for observations and laws.
D) The equivalent of a scientific opinion which others may disagree with.
E) None of these.

Answers

Answer:

The correct answer to the following question will be Option C.

Explanation:

The theory seems to be the context within which findings are explained as well as possible predictions are made. This theoretical perspective discusses the factors behind the results as well as the laws.Theories have been used in scientific knowledge to give wide interpretations to accommodate observed facts in case the root reason is still yet to be found as well as characterized.

So that Option C will be the right answer.

Can someone please help me with this question

Answers

Answer:

the second one I think...

Answer:

The answer is the first one.

Acceleration is the change of velocity

Velocity is another term for speed with direction.

In the following reaction, which are the products?

Mg + 2HCl —> H2 + MgCl2

If you could, please explain as well.​

Answers

Answer: H2 + MgCl2

Explanation: As they are on the right side of the equation/ are the products being made as a result of the reaction, they are the products.

The electron dot diagram for a neutral atom of chlorine (atomic number 17) is shown below.

Which of the following symbols represents a chlorine ion with a stable arrangement of eight valence electrons?
A. 35Cl1-
B. 35Cl2-
C. 35Cl1+
D. 35Cl

Answers

Answer:

A. 35Cl1-

Explanation:

Chlorine needs 1 more electron to have full octet thus will take 1 electron and possess a -1 charge.

A 2.575 g piece of gold (specific heat = 0.129 J/g°C) at a temperature of 75°C is placed into cold water at 10°C. If the gold loses 10.0 J of energy, what is its final

temperature in the water? Enter your answer to the

nearest whole number of °C.

Answers

Answer:

The final temperature of the mixture is 44.9°C

Explanation:

Mass of the substance (gold) = 2.575g

Specific heat capacity of gold = 0.129J/g°C

Initial temperature (T1) = 75°C

Final temperature (T2) = ?

Energy lost = 10J

Heat energy(Q) = MC∇T

Q = heat energy (in this case lost)

M = mass of the substance

C = specific heat capacity of the substance

∇T = change in temperature of the substance = (T2 - T1)

Q = MC∇T

Q = MC(T2 - T1)

-10 = 2.575 × 0.129 × (T2 - 75) energy is -ve because it was energy lost.

-10 = 0.3321 × (T2 - 75)

-10 = 0.3321T2 - 24.9075

Collect like terms

0.3321T2 = 24.9075 - 10

0.3321T2 = 14.9075

T2 = 14.9075 / 0.3321

T2 = 44.88

T2 = 44.9°C

The final temperature of the mixture is 44.9°C

let's consider the effectiveness of two antacids to illustrate how chemical calculations can be important in daily life. Baking soda NaHCO3, is often used as an antacid. It neutralizes excess hydrochloric acid sereted by stomach. The balanced equation for the reaction is NaHCO3(s)+HCl(aq)=H20(l)+CO2(g). Milk of magnesia, which is an aqueous suspension of magnesium hydroxide, Mg(OH)2(s)+2HCl(aq)=2H20(l)+MgCl2(aq), Which anatacid can consume the most stomach acid, 1.00g of NaHCO3,or 1.00g of Mg (OH)2?

Answers

Answer:

Milk of Magnesia would consume the most stomach acid at almost 3 times the amount as baking soda.

Explanation:

Baking Soda = NaHCO3(s)+HCl(aq)=H20(l)+CO2(g)

NaHCO3 Molar mass of 84.007 g/mol

0.012 Moles of NaHCO3 and since an equal ratio of HCl is required

we therefore neutralize 0.012 Moles of HCl

Milk of magnesia = Mg(OH)2(s)+2HCl(aq)=2H20(l)+MgCl2(aq)

Mg(OH)2(s) Molar mass: 58.3197 g/mol

0.017 Moles of Mg(OH)2 and the ratio is 2:1, so 2 moles for each 1 mole of Mg(OH)2, so we need 0.034 Moles of HCl

Level 3- How is tooth decay related to pH?How can it be prevented?

Answers

Answer:

A lower pH of the mouth creates bad bacteria that eventually lead to decay of the tooth.  

It can be prevented by avoiding food that causes acidity.

Explanation:

Tooth decay is caused by the pH level in the mouth dropping below 5.5, meaning it is acidic. It can be prevented by brushing your teeth as toothpaste is an alkali which will neutralise the pH level in your mouth.

Hope this helps

Attempt 1 of 1
Which of the following is most likely to have a crystalline structure?
wood
rubber
glass
quartz

Answers

I’m not 100% positive but quartz would make sense

Answer: Quartz

Explanation: I looked it up ;)

I NEED HELP PLEASE, THANKS SO MUCH! :)
Solids, liquids and gases are the three most commonly accepted phases of matter. Explain the properties of each phase, including their relative energy.

Answers

Answer:

Here's what I get  

Explanation:

The molecules of a substance attract each other.

They are also in constant motion.

Their kinetic energy increases with the temperature.

1. Solids

If the temperature is low enough, the molecules will have little kinetic energy.

They will not be able to escape the attractions of their neighbours, so they will be fixed in place in a crystalline array.

All they can do is vibrate about their position in the array.

The substance will be a solid.

2. Liquids

If the temperature is higher, the molecules will have enough kinetic energy to slide past each other, but not enough to escape the attractions of nearby molecules.

The substance will be a liquid.

3. Gases

If the temperature is high enough, the molecules will have enough kinetic energy to escape from the surface and fly off into space.

The molecules will on average so far apart that they won't feel the attractions of others.

When they do collide, they will have energy to bounce off each other rather than stick together.

The substance will be a gas.

 

The energy from 0.015 moles of octane was used to heat 250 grams of water. The temperature of the water rose from 293.0 K to 371.2 K. What is the enthalpy of combustion of octane? The specific heat capacity of water is 4.18 J/K g.

A. -5448 kJ/mol
B. 1226 kJ/mol
C. -1226 kJ/mol
D. 293.25 kJ/mol

Answers

I would probably go with B but it also might be D

Answer:

A.) -5448 kJ/mol

Explanation:

I got it correct on founders edtell

What would the molecular formula be if lithium and sulfur reacted to form a neutral compound?

Answers

Answer:

Li2S

Explanation:

Since Lithium gives away one electron, I believe it goes to Sulfur.

Hope this helps! :)

Answer:

Li*2S

Explanation:

ed tell chem

In an ecosystem, why can only one species fill an ecological niche?

Answers

Answer:

Explanation:es porque las especies con nichos idénticos tienen las mismas necesidades, lo que significa que competirían exactamente por los mismos recursos.

where are people mostly exposed to chemicals?

Answers

Answer:

people are mostly exposed to chemicals through their nose, mouth, eyes, and ears

Explanation:

they are the easiest way for anything, bad or good, to enter the body because  people touch their face alot.

This might not answer what you were looking for but the other answer covered it pretty well so I thought I'd give you another angle to the question!

Hope this helps!!

What is one way to make stored water safe?

Answers

Even though you asked for ONE WAY, I found some other good ways.

1. Thoroughly wash plastic soda bottles or milk jugs with warm, soapy water.

2. Store sealed containers in a dark, dry, and cool place.

3. If after six months you have not used the stored water, empty it from the containers and repeat steps 1 through 3 above.

Other Questions
Calvin is using a 10 foot ladder to paint his house. If he leans the ladder against thehouse so that it makes a 71 angle with the ground, how far up the house does theladder reach? Round to two decimal places. Can someone answer this question please please help me I really need it if its correct I will mark you brainliest . What part of a sentence can stand by itself? What form of sound repetition connects the words in this line from "The Fish"?grim, wet, and weaponlikeSelect the best answer from the choices provided.A. alliterationB. assonanceC. consonanceD. rhyme Required Information The following information applies to the questions displayed below) Vanishing Games Corporation (VGC) operates a massively multiplayer online game, charging players a monthly subscription of $13. At the start of January 2018, VGC's income statement accounts had zero balances and its balance sheet account balances were as follows:________. Cash $1,600,000 Accounts Receivable 174,000Supplies 15,100Equipment 930,000Buildings 510,000Land 2,050,000Accounts Payable 113,000Deferred Revenue 74,800Notes Payable (due 2025) 94,800 Common Stock 2,500,000Retained Earnings 2,498,100 In addition to the above accounts, VGC's chart of accounts includes the following: Service Revenue, Salaries and Wages Expense, Advertising Expense, and Utilities Expense. The following transactions occurred during the January month:________.A. Received $57,750 cash from customers on 1/1 for subscriptions that had already been earned in 2017. B. Purchased 10 new computer servers for $41,500 on 1/2; paid $11,500 cash and signed a three-year note for the remainder owed. C. Paid $14,300 for an Internet advertisement run on 1/3. D. On January 4, purchased and received $5,300 of supplies on account. E. Received $150,000 cash on 1/5 from customers for service revenue earned in January. F. Paid $5,300 cash to a supplier on January 6. G. On January 7, sold 19,900 subscriptions at $13 each for services provided during January. Half was collected in cash and half was sold on account. H. Paid $380,000 in wages to employees on 1/30 for work done in January. I. On January 31, received an electric and gas utility bill for $6,260 for January utility services. The bill will be paid in February. find f(3) for f(x)=3^x+3 How do you use your notes to identify main points,important terms, definition and synthesize info as you prepare for study and examinations? Quien grito A- Esmerelda grita B- Esmerelda gritoC- Esmerelda grite D- Esmerelda gritio 80 POINTS!!!!The table shows how much Eric earns for pruning trees. Write an equation that relates t, the number of trees Eric prunes to p, the amount he earns. Solve your equation to find how much Eric earns if he prunes 7 trees. List out the merits and challenging factors of federal system. What additional information is needed for each book entry to follow MLA guidelines?a word describing the mediuma description of the books circulationthe month and day the book was readthe number of pages in the book If Romeo earns 8% more than Juliet, Romeos salary is how many times Juliets salary?A) 1.08B) 0.92C) 80D) 108 Mira is writing a research paper about how Mark twains personal life influences writing which of the following are secondary sources that she could use for evidence in her paper. A magazine article about mark twain the novel adventures of tom sawyer by mark twain the autobiography of Mark Twain the novel life on the Mississippi by Mark Twain an essay about mark twain by a literary critic What is the sum of 3 times a number and 2 To approach runway 17 of the Ponca City Municipal Airport in Oklahoma, the pilot must begin a 3 descent starting from a height of 2714 ft above sea level. The airport is 1007 feet above sea level. To the nearest tenth of a mile, how far from the runaway is the airplane at the start of his approach? On December 31, a Company held the following short-term available-for-sale securities. The Company had no short-term investments prior to the current period. Prepare the December 31 year-end adjusting entry to record the fair value adjustment for these debt securities. 2 PointsWhich word best describes Martin Luther King Jr.'s tone in the video?O A. CalmO B. SarcasticO C. JitteryO D. Angry What is the slope of the line shown below? anyone know the answer ? :( Which of the following climate types is found near the equator?