Now describe the properties of the compound you picked(gold). Compare the properties of the compound with the properties of the elements that comprise it. How do you explain the difference?
Explanation:
Gold conducts heat and electricity. ...
Gold is ductile: It can be drawn out into the thinnest wire. ...
Gold is highly reflective of heat and light. ...
Gold is prized for its beauty. ...
Gold is malleable, so it can be flattened into extremely thin sheets.
on the other hand Gold consist of copper
Key Properties of Copper Alloys
Excellent heat conductivity.
Excellent electrical conductivity.
Good corrosion resistance.
Good biofouling resistance.
Good machinability.
Retention of mechanical and electrical properties at cryogenic temperatures.
Non-magnetic.
so the difference is that copper is less expensive and not priced with its beauty
Which of the answers does not represent a common type of air pollution? A) agricultural ammonia B) carbon monoxide exhaust C) sulfur oxide D) synthetic organic compounds E) industrial nitrogen oxide
Answer:
D)
synthetic organic compounds
Explanation:
synthetic organic compounds are water pollutants
What is the new pressure if the temperature outside is 296k and his weight causes the tire's volume to drop to 2.0 liters
Question:
At standard temperature and pressure, the volume of a tire is 3.5L. What is the new pressure if the temperature outside is 296k and its weight causes the volume of the gas is 2.0 L?
Answer:
The new pressure is: 1.896 atm
Explanation:
At standard temperature and pressure, we have:
[tex]P_1 = 1atm[/tex]
[tex]T_1 = 273.15k[/tex]
[tex]V_1 = 3.5L[/tex]
Outside, we have:
[tex]T_2 = 296k[/tex]
[tex]V_2 = 2.0L[/tex]
Required
Determine the new pressure
Using combined gas law, we have:
[tex]\frac{P_1V_1}{T_1} =\frac{P_2V_2}{T_2}[/tex]
This gives:
[tex]\frac{1 * 3.5}{273.15} =\frac{P_2*2.0}{296}[/tex]
Solve for [tex]P_2[/tex]
[tex]P_2 = \frac{296 * 1 * 3.5}{273.15*2.0}[/tex]
[tex]P_2 = \frac{1036}{546.30}[/tex]
[tex]P_2 \approx 1.896 atm[/tex]
Calculate the ratio of the velocity of molecular oxygen to the velocity of atomic argon at the same temperature.
I asked this before but still need help
No links, I'm not d*mb
Answer:
Oxygen 1.12 X faster
Explanation:
convert 5.91 x 10^26 molecules h20 to moles
Answer:
0.432 mol
Explanation:
Divide the given number of molecules by Avogadro's constant. Avogradro's constant is the number of atoms/molecules in a mole of a substance.
Therefore,
2.60
⋅
10
23
molecules
6.022
⋅
10
23
molecules/mol
=
0.432175 moles
≈
0.432 moles
Explanation:
What is the volume, in L, of 2.50 moles of oxygen gas measured at 25.0oC and a pressure of 104.5 kPa?
Answer:
58.53 L
Explanation:
Ideal gas equation is
PV = nRT
P - the pressure of the gas = 104.5 KPa
V- the volume occupied by the gas
n - the number of moles of gas =2.50
R - the universal gas constant, usually given as 0.0821 atm.L/(mol K)
T - the absolute temperature of the gas.= 298K
[tex]V =\frac{nRT}{P}[/tex]
Now substituting vales we get
[tex]V = \frac{2.5\times0.0821\times298}{104.5\times1000}[/tex]
V = 58.53 L
I need help in this :(
Answer:
ok follow me twitter dm me for answer The Kid D is my twitter
Explanation:
how many moles are in 2.71 molecules of carbon dioxide (CO2)
Answer:
This has already been answered but here is the answer:
2.71×10 molecules of co2 * 1 Mole CO2 /6.022 *10^23 molecules of CO2
= 4.5*10^-14 Mole CO2
1 mole of CO2 has 2 mole oxygen
4.5*10^-14 Mole CO2 *2/1
= 9.0*10^-14 Mole oxygen
At equilibrium A. All reactions have ceased B. Only the forward reaction continues C. Only the reverse reaction continues D. Both the forward and reverse reactions continues
Answer:
D)both the forward and reverse reactions continue.
Explanation:
Chemical equilibrium can be regarded as state whereby rate of the forward reaction is equal to rate of backward reaction. It should be noted that At equilibrium both the forward and reverse reactions continue.
how are a dog, a dolphin, and a bat similar to a human?
Answer:
The more structures that are similar, the more closely related organisms are in their evolutionary past. For example, a human, a dog, a fruit bat, and a dolphin all have the same pattern of bone structure in the upper extremity—one bone connected to two bones, connected to many bones, connected to finger-like bones.
Answer:
Explanation:
they are all made of cells
Which sediments are carried by suspension?
Answer:
Sand and silt can be carried in suspension.
Explanation:
For example, sand and silt can be carried in suspension in river water and on reaching the sea bed deposited by sedimentation; if buried, they may eventually become sandstone and siltstone (sedimentary rocks) through lithification.
What type of pressure can you expect to find in the air when you have a sunny day with no clouds?
Answer:
sunny i guess but if u don't feel sunny the warm
Answer:
A high pressure system is a whirling mass of cool, dry air that generally brings fair weather and light winds. When viewed from above, winds spiral out of a high-pressure center in a clockwise rotation in the Northern Hemisphere. These bring sunny skies. A high pressure system is represented as a big, blue H.
Explanation:
the answer
can alluminium sulphate or carbonate test the purity of water
Explanation:
When added to water, aluminum sulfate causes microscopic impurities to clump together into larger and larger particles. These clumps then settle to the bottom of the container and can be filtered out. This makes the water safer to drink
,
HELP PLEASE ASAP!!!!!
the cell is undergoing a step of meiosis I. what step is the cell in?
a. the beginning of prophase I
b. the middle of metaphase I
c. the end of anaphase I
d. the middle of telophase I
Answer:
I think it's c
Explanation:
jenensnsjsjs
Please help with this Unit Conversions problem!
"Convert 7.54 kg to mg. Show your work."
Answer:
7,540,000 mg
Explanation:
1 kg = 1,000,000 mg
7.54 kg x 1,000,000= 7,540,000 mg
Given the balanced equation representing a reaction:
Ni(s) + 2HCl(aq) - NiCl(aq) + H2(9)
In this reaction, each Ni atom
1.
loses 1 electron
2.
loses 2 electrons
لما
gains 1 electron
4
gains 2 electrons
Submit
Answer: loses 2 electrons
Explanation:
Ni Atom loses 2 electrons , Option 2 is the correct answer.
What is an Electron ?Electron is a subatomic particle (denoted by the symbol e⁻)
or whose electric charge is negative one elementary charge.
Electrons belong to the first generation of the lepton particle family and are generally thought to be elementary particles because they have no known components or substructure.
The electron has a mass that is approximately 1/1836 that of the proton.
Ni(s) + 2HCl(aq) - NiCl(aq) + H₂(g)
This is an oxidation-reduction (redox) reaction:
2 H⁺ + 2 e⁻ → 2 H (reduction)
Ni - 2 e⁻ → Ni ²⁺ (oxidation)
HCl is an oxidizing agent, Ni is a reducing agent.
Therefore Ni Atom loses 2 electrons , Option 2 is the correct answer.
To know more about Electron
https://brainly.com/question/12001116
#SPJ2
7 According to the Brønsted-Lowry definition of acids-base reaction, acids have the
ability to
"donate" hydroxide ions
O
"donate" hydrogen ions
O
"accept" hydroxide ions
O
"accept" hydrogen ions
Answer: "donate" hydrogen ions
Explanation:
1. what is an ethical concern about biotechnology
2. list 2 examples of transgenic organism
3. write a 3-sentences summary on how biotechnology affects individual, society, and environment
Answer:
1. There are so many ethical concerns about biotechnology, some Ethical issues that arise from the application of modern biotechnologies include:
Discrimination of individuals because of their health or health history as a result of knowing their genetic information, minimizing harms while maximizing benefits, Interference with nature, privacy.
2. a. Plants (maize, rice)
b. Fish (GloFish)
3. For individuals, biotechnology has helped in the prevention and treatment of a wide range of diseases. For society, biotechnology saves time, improves the health and quality of food through a reduction in the use of pesticides and it can create new viruses and bacteria that cause diseases. Biotechnology could address global change since more genetically modified plants are grown.
Help me pretty please
Answer:
I'm pretty sure light waves do not require a medium to travel
How many atoms are in 14 moles of I? Watch your significant figures.
8.4 x 1024 atoms of l
8.43 x 1024 moles of I
8.4 x 1023 atoms of l
8.43 atoms of l
Answer:
8.43 x 1024 moles of I
Explanation:
Crabs are organisms that have five pairs of legs. In certain species of crabs, the fifth pair of legs has a flattened, paddle-like shape. Which of the statements below best explains how this adaptation has evolved?
A.Crabs were exposed to a toxin in the water.
B.Crabs with this adaptation have an advantage over other crabs to defend against predators in oyster beds.
C.Crabs needed this adaptation to dig into sand to find food so they developed the flattened paddle-like shape.
D.Crabs developed this adaptation because they needed to climb mangrove trees to hide themselves from predators.
Answer:
A
Explanation:
Crabs were exposed to a toxin in the water.
Which of the follow can NOT be possible
error that occurs during a lab experiment?
human error
pure reactants were used
thing
O unexpected products were produced
the reaction didn't go to completion
Answer:did h find the answer
Explanation:
if 5 L of butane is reacted what volume of carbon dioxide is produced ILL GIVE BRAINLIEST
Answer: First, here is the balanced reaction: 2C4H10 + 13O2 ===> 8CO2 + 10H2O.
This says for every mole of butane burned 4 moles of CO2 are produced, in other words a 2:1 ratio.
Next, let's determine how many moles of butane are burned. This is obtained by
5.50 g / 58.1 g/mole = 0.0947 moles butane. As CO2 is produced in a 2:1 ratio, the # moles of CO2 produced is 2 x 0.0947 = 0.1894 moles CO2.
Now we need to figure out the volume. This depends on the temperature and pressure of the CO2 which is not given, so we will assume standard conditions: 273 K and 1 atmosphere.
We now use the ideal gas law PV = nRT, or V =nRT/P, where n is the # of moles of CO2, T the absolute temperature, R the gas constant (0.082 L-atm/mole degree), and P the pressure in atmospheres ( 1 atm).
V = 0.1894 x 0.082 x 273.0 / 1 = 4.24 Liters.
Explanation:
Arrange the following compounds in order of DECREASING boiling points (going from the highest to the lowest):
n-butane
n-octane
2,2,3,3-tetramethyl-butane
2-butene
Answer:
b
d
a
c
Explanation:
More carbons in longest chain = higher BP
D has a BP of 0.8
A has a BP -0.5
C is the lowest because the more branched it is the lower BP
what is the difference between quantative and qualitative analysis
Answer:
Quantitative data can be counted, measured, and expressed using numbers. Qualitative data is descriptive and conceptual. Qualitative data can be categorized based on traits and characteristics.
Explanation:
Quantitative analysis involves looking at the hard data, the actual numbers. Qualitative analysis is less tangible. It concerns subjective characteristics and opinions – things that cannot be expressed as a number.
Part A
Campers want a travel cup that keeps the temperature of a beverage from changing for up to two hours.
They may want to keep a hot drink hot when they are in a cold place. Or they may want to keep a cold drink
from warming up in a hot environment,
Describe how you plan to design, build, and test a travel cup that uses thermal insulators?
The statement is "thermal insulators of a double-layered vacuum seal make a liquid heated when it's cold and keep it cool when it's hot."
What is thermal insulator?A thermal insulator is a material that inhibits heat from being conveyed from one location to another.
Campers seek a travel cup that cools liquids with a cold pack. Design the exterior portion of the cup to keep the drink cold after it has cooled down, as well as the interior compartment to contain the cold pack and channel heat from the liquid in the cup. One of the greatest ways to keep your coffee hot for a long time is to use vacuum insulation in a thermos. On the surface, the concept appears straightforward.
To know more about thermal insulators here
https://brainly.com/question/1033537
#SPJ2
How is energy from grass passed on between animals
An atom of a certain element has 19 protons, 19 electrons, and a mass number of 39. This element is very reactive. How many neutrons are in this atom?
Record your answer and fill in the bubbles on your answer document. Be sure to use the correct place value.
Answer:
There are 20 neutrons in this atom.
Explanation:
Why is the decay cycle important to ecosystems?
The decay cycle creates new matter replacing dead organisms.
The decay cycle decomposes dead organisms and creates fertile soil.
The decay cycle provides a food source for large animals.
The decay cycle brings in more water for plant in an ecosystem.
Answer:The decay decomposes dead organisms and creates fertile soil.
Explanation:it helps to digest food, and to recycle materials in our environment.
Predict: Based on your hypothesis, which population(s) would be hurt if bears were added?
Answer:
all of em, unless the bear is normal to the environment