a. Anna's chemistry class is going to be experimenting with AgNO3 today, which
can stain hands and clothes. Anna is concerned about her jewelry, so as she
gets ready for school, she removes her gold (Au) ring andreplaces it with a
cheaper nickel (Ni) ring. Is this a good idea? Explain your answer. (3 points)

Answers

Answer 1

Answer:

No. While gold would not react with a silver nitrate solution, nickel would.

Explanation:

Refer to the metal reactivity series.

Reactivity: [tex]\text{Gold} < \text{Silver} < \text{Nickel}[/tex].

Gold is positioned after silver in the reactivity series, meaning that gold is typically less reactive than silver. Thus, gold would not react with a solution of silver ions to produce silver metal.

However, since nickel is positioned before silver in the reactivity series, it is expected that nickel would react with silver ions in this solution to produce silver metal.

Thus, if the silver nitrate solution comes into contact with the two rings, the nickel ring would likely react with the solution, the gold ring would not.


Related Questions

Is the formation of sulfur tetrafluoride monoxide endothermic or exothermic?

Answers

endothermic means it absorbs energy while exothermic means it releases energy. remember this.

When the radiation isn't quite strong
enough to kill right away a terrible
Condition follows what is it called
and what is happening.

Answers

When radiation isn’t Enough to kill you but it’s too much for your body to handle you would get what is called radiation poisoning. the symptoms are vomiting, nausea, diarrhea, headache, and several others

flowering plants are called​

Answers

Question:-

flowering plants are called?

Answer:-

Angiosperms

Explanation:-

Angiosperms are plants that bloom and bear fruit. The word angiosperm is derived from two Greek words, Angeion and Sperma . Angeion means "vessel" and sperma means "seed".

What equipment is generally used to make lyophilized medications suitable for administering to the patient? a) Test tubes or sterile ampules O b) Petri dishes and sterile droppers c) Sterile syringes or graduated cylinders d) Measuring cups and clean, warm water

Answers

C is the correct answer

what is the name of the compound ZnO​

Answers

the compound is Zinc Oxide

A chemical reaction produces formaldehyde, with a chemical formula of CH2O. Carbon is in Group 4A, oxygen is in Group 6A, and hydrogen is in Group 1A on the periodic table. In one to two sentences, describe the bonds in a molecule of formaldehyde in terms of valence electrons.(2 points)

Answers

This problem is providing a comparison on the atoms forming formaldehyde, CH₂O, in terms of the groups they are in, C in group 4A, O in group 6A and H in group 1A, and it is asking for a description about the bonds once they are bonded in a formal Lewis dot structure.

In such a way, the attached file shows the Lewis dot structure, in which we can find two bonds between the two hydrogen atoms and the carbon one, and also, a double bond between carbon and oxygen.

The aforementioned is explained by bearing to mind the concept of octet, which states that elements in groups 4A, 5A, 6A and 7A are able to complete 8 valence electrons after bonding.

Thus, since carbon is in group 4A we infer it needs 4 more electrons to complete the octet, and that is achieved due to the 4 bonds it is having with the two hydrogen atoms and double bond with the oxygen atom.

In addition, since oxygen is in group 6A, we infer it needs two more electrons to complete its octet, which is attained via the double bond it has with the carbon atom. For hydrogen, however, it can complete one bond at maximum, because it is in group 1A, which means it can complete two valence electrons after bonding.

Learn more:

https://brainly.com/question/10535983https://brainly.com/question/21089350

Answer:

Ok I seen the answers on here talk about over complicated lol

Explanation:

CH2O

1 carbon atom

2 hydrogen atoms

1 oxygen atom

then is born CH2O aka formaldehyde : )

Explain in your own words:

i. Sublimation

ii. Condensation

iii. Melting

Answers

sublimation- a change of state from a solid to a gas without going through the liquid state.

condensation- change of state from a gas to a liquid

melting- when a solid turns into a liquid

A student borrows $10,000 from a bank but ends up paying $13,000 on the

loan over the next five years. How much interest did the student pay?

Answers

The student paid an interest of $3,000 over the next five years.

HOW TO CALCULATE INTEREST:

The interest on a borrowed amount of money can be calculated by subtracting the principal from the amount paid over time. That is;

Interest = principal - amount

According to this question, a student borrows $10,000 from a bank but ends up paying $13,000. This means that the principal is $10,000 while the amount is $13,000. The interest is calculated thus;

Interest = $13,000 - $10,000

Interest = $3,000

Therefore, the student paid an interest of $3,000 over the next five years.

Learn more about interest at: https://brainly.com/question/4626564

Please help! Urgent: take ur time and answer it correctly

Answers

Answer:

an electric field is a field around a charged particle or object within which a force ( electric force) would be exerted on other charged particles or objects.

Explanation:

particles with unlike charges attract one another while particles with like charges repel each other.

Which one item of the list below does not describe part of beta decay?
A. The nucleus of the atom is unstable.
B. A neutron turns into a proton.
C. A proton turns into an electron.
D. An electron is ejected from the nucleus.

Answers

Answer:

C

Explanation:

When Beta decay happens, the atomic number of an element goes up, and that means there is an extra proton. A is not the answer because unstable atoms cause decay. B is also not correct because this is what happens in Beta decay: a neutron becomes a proton. D is not correct because an electron is actually emitted from the nucleus.

Describe echolocation. Give an example of an animal that uses echolocation.

Answers

dolphin and whales use echolocation

How do the terms genotype and phenotype relate?
O Both are sets of alleles that define traits.
O An organism's phenotype leads to its genotype.
O An organism's genotype leads to its phenotype.
Both are terms for observable traits

Answers

Answer:

c is the

Explanation:

Which best defines color? (1 point)
a physical property of matter related to how a material interacts with different wavelengths
of light
a chemical property of matter related to how a material interacts with different wavelengths
of light
O a physical property of matter related to a material's ability to reflect light
O a chemical property of matter related to a material's ability to reflect light

Answers

Answer:

i believe the answer to your quetion will be A im on edge by the way so if your on a differnt program than it might be wrong sorry if im wrong have a wonderfull day!

I NEED HELP WItH THIS 5th GRADE QUESTION ITS VERY VERY EASY no Links PLZ and I will Report any useless AWnser PLZ HELP WILL mARK AS BRAINLIST AND Will giVE 1000 Points if correct Answer
How is the mass of a solid measured?

By estimating
With a beaker
With a ruler
With a scale

Answers

Answer:

A Beaker or graduated cylinder

Explanation:

Place the solid into the graduated cylinder. Measure the amount of water in the graduated cylinder. The product is the solid's mass wich i mean by that is what number the water level is at.

Answer:

Beaker

Explanation:

A flexible vessel contains 78.00 L of gas at a pressure of 1.50 atm. Under conditions of constant temperature
and moles of gas, what is the pressure of the gas when the volume of the vessel is tripled?

Answers

The pressure of the gas when the volume of the vessel is tripled is 0.50 atm.

To find the volume of the gas, we use Boyle's law which states that for a given mass of gas at constant temperature, the pressure is inveresly proportional to its volume. This is stated mathematically as P ∝ 1/V.

So, PV = constant

P₁V₁ = P₂V₂ where P₁ = initial pressure of gas = 1.50 atm, P₂ = final pressure of gas, V₁ = initial volume of gas = 78.00 L and V₂ = final volume of gas = 3V₁ (since the volume of the gas is tripled)

So, making P₂ the subject of the formula, we have

P₂ = P₁V₁/V₂

Substituting the values of the variables into the equation, we have

P₂ = P₁V₁/V₂

P₂ = 1.50 atm × V₁/3V₁

P₂ = 1.50 atm/3

P₂ = 0.50 atm

So, the pressure of the gas when the volume of the vessel is tripled is 0.50 atm.

Learn more about Boyle's law here:

https://brainly.com/question/25736513

An ammonia solution has a pH of 8.25. What is its [OH-]?

Answers

pH + pOH = 14

If pH=8.25, then:

pOH = 14 - 8.25 = 5.75

pOH = -log[OH-]

5.75 = -log[OH-]

-5.75 = log[OH-]

10^(-5.75) = [OH-]

[OH-] = 0,0000017783

[OH-] = 1,78×10^(-6) mol/dm³

I want a pharmacist technician to help me with a question please

Answers

I can help with your question

a fisherman in a boat is drinking a of hot coffee. the large lake below his boat is full of cold water. which statement is an accurate comparison of the lake water and the coffee?

Answers

Answer:

see below

Explanation:

The lake will have more total thermal energy but the particles in the coffee will be moving faster.

A comparison of hot coffee and cold lake is, the heat from the coffee will be absorbed by the cold lake through convection method of heat transfer.

Conservation of energy

The principle of conservation of energy states that the total energy of an isolated system is always conserved.

Heat lost by the hot coffee = Heat absorbed by the cold lake

Heat transfer process

Heat from the coffee will be absorbed by the cold lake through convection method of heat transfer.

Thus, a comparison of hot coffee and cold lake is, the heat from the coffee will be absorbed by the cold lake through convection method of heat transfer.

Learn more about heat transfer here: https://brainly.com/question/12072129

50 PTS!!!!!
What type of chemical reaction is Aerobic Cellular Respiration?

Answers

Answer: During aerobic respiration, catabolic reactions convert larger complex organic molecules into ATP, the chemical that drives most physiological processes in the body.

Explanation:

natural gas is methane. write the equation for complete combustion of methane.

Answers

Answer:

methane + oxygen → water + carbon dioxide CH4 + 2O2 → 2H2O + CO2

Explanation:

hope this helps

A plant uses the energy from sunlight to create oxygen and glucose from carbon dioxide and water which statement is true about the changes that have occurred

Answers

Answer:

The correct answer choice is A. A chemical change has occurred because new compounds have been produced.

Explanation:

A physical change is defined as a change in which there is alteration in shape, size etc. No new substance gets formed in these reactions.Example: Melting of ice A chemical change is defined as a change in which a change in chemical composition takes place. A new substance is formed in these reactions.Example: photosynthesis

Photosynthesis is the process used by plants, algae and certain bacteria to convert energy from sunlight and turn it into chemical energy in the form of glucose which is used a s a source of energy by many organisms.

Thus the true statement is a chemical change has occurred because new compounds have been produced.

what substance changes directly solid to gas
3 examples​

Answers

Answer:

Air FreshenersSpecialized PrintersMoth Balls

                       

The process in which solids directly change to gases is known as sublimation. This occurs when solids absorb enough energy to completely overcome the forces of attraction between them. Dry ice is an example of solids that undergo sublimation.

NEED HELP ASAP WILL GIVE BRAINLIEST

Answers

Answer:

0.2491

Explanation:

1mole of a gas contains 6.02 × 10²³molecules

x moles will contain 3.408 × 10²¹

x = 1 × 3.408 × 10²¹/ 6.02 × 10²³

= 5.66 × 10^-3moles

Mole = mass/ molar mass

mass = Mole × molar mass

= 5.66 × 10^-3 × 44.01

= 249.0966 × 10^-3

= 0.2490966

to 4 decimal places = 0.2491

Predict the decay process and write the nuclear equation of Cf- 255

Answers

Answer:

curium

243

,

252

/

99

Es,  

251

/

98

Cf,  

214

/

82

Pb

Explanation: Im not very good with this but here ya go!

The stationary state with the lowest energy is called the _______.

Answers

Answer:

Ground state

the state with the smallest amount of energy.

How many grams of CaSO4 form when
50.0 mL of 0.20 M Ca(NO3)2 react with
excess potassium sulfate solution?
Ca(NO3)2 + K2SO4 → CaSO4 + 2KNO3
-
?] g CaSO4

Answers

Answer:

1.36g CaSO4 (FIXED THIS)

Explanation:

.01 mol CaSO4 is the conversion factor between these values and now you just need to multiply it by the molar mass of .01 x 136.14=1.36g CaSO4

Apologies for having the wrong answer before this, it's been a long day.

I want a pharmacist technician to help me with a question please

Answers

I'm a pharmacy dispenser which is the same thing. what's your question?

Need Help ASAPPPP!!!!

Answers

Answer: For number 8. I think only one if not i'm so sorry also you would need 143. 0914

Explanation:

Answer:

Hello! :p

6.022 × 10^{23} atoms of copper. 143.09 g/mol

I hope this helps! Thank you so much! :)

Which of the following are used to administer liquid medications orally? O a) Syringes b) Vials c) Suppositories d) Droppers e) Teaspoons

Answers

Answer:

D

Explanation:

If you have 3 g of each substance, which would take up the smallest volume?

Answers

Answer:

Explanation:

f the mass of an object is 35 grams and it takes up 7 cm3 of space, calculate the density.

34 pages

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