Answer:
I think copper
Explanation:
Material IACS % Conductivity
Silver 105
Copper 100
Gold 70
Aluminum 61
Nickel 22
Zinc 27
Brass 28
Iron 17
Tin 15
Phosphor Bronze 15
Lead 7
Nickel Aluminum Bronze 7
Steel 3 to 15
the table might help- your indian brother
There are three stable forms of neon: neon-20, neon-21, and neon-22. Which statement is true
- the atomic mass of the three isotopes is the same
-the three isotopes are all radioactive
-the three isotopes are equally abundant in nature
-the charge of all isotopes is the same
Answer:
The charge of all isotopes are the same.
Explanation:
Some isotopes are radioactive.
They have different numbers of neutrons resulting in different atomic mass.
Not all isotopes are equally abundant in nature.
Answer:
Then answer is the charge of all isotopes is the same
Explanation:
Give reasons. mass is called a physical quantity.
Answer:
Mass is a Physical quantity
Explanation:
It is a fundamental physical quantity because it cannot be derived from other physical quantities.
.
.
.
Hope it helps
A. Identify the type of molecule shown in the drawing. (2 points)
Answer: 1) Caboxylic acid
2) Ether
3) Ester
4) Aldehyde
5) Amine
6) Alcohol
Explanation: The type of a molecule is based it's primary functional group.
https://en.wikipedia.org/wiki/Functional_group
The identities of the given molecules shown in the drawing are:
1) Carboxylic acid.
2) Ether
3) Ester
4) Ethane
5) Aldehyde
6) Amine
7) Alcohol
What are the organic compounds?Organic compounds are those compounds, which contain carbon-carbon and carbon-hydrogen bonds.
The five organic compounds are lipids, carbohydrates, protein, nucleotide, etc.
Thus, the correct option is 1) Carboxylic acid.
2) Ether
3) Ester
4) Ethane
5) Aldehyde
6) Amine
7) Alcohol
Learn more about organic compounds
https://brainly.com/question/5994723
#SPJ2
How many moles of hydrogen are produced when 6.28 mol of oxygen form?
Answer:
3.14 is the answer
Explanation:
hope it may help you
985 grams converted to kilometers
Answer:
?
Explanation:
did you mean kilograms?
Help me with this easy chemical change question!!!!
Answer:
1, just I) color.
Physical properties are the properties that can be observed without changing the composition of a substance, such as color, temperature, density, and boiling point.
A physical change is a change in the substance that only modifies its aggregation state, such as solidification, and boiling.
Chemical properties are the properties that need a reaction to being observed, such as combustibility, which needs a combustion reaction to being quantified.
When a chemical reaction occurs, and the composition of the substance change, it's a chemical change.
So, heating copper with carbon is a chemical reaction, and purification by electrolysis is too. Color is the only physical property.
Why is it difficult to classify dissolving as simply a physical or a chemical change?
It is difficult to classify dissolving as physical or chemical change because at some point dissolving produce new substance which can not be reversed while at some point no new substances are produced but and the process is reversed.
Physical change is a change in which no new substance is formed and the process is easily reversible. For example, the dissolution of salt in water is a physical change since we can reverse the process to obtain salt and water.
Water + Salt <=> Salt Solution
Chemical change is a change in which new substance is formed and and the process is not reversible. For example, the dissolution of metal in acid is a chemical change since we can not reverse the process to obtain the metal.
Acid + metal —> Salt + hydrogen gas
2Na + 2HCl —> 2NaCl + H₂
Thus, we can see that it is difficult to classify dissolving as a physical or a chemical change.
Learn more: https://brainly.com/question/19210143
How is the atomic mass of an element determined?
A. by adding the masses of the protons and electrons
B. by adding the masses of the neutrons and electrons
C. by determining the number of protons
D. by adding the masses of the protons, neutrons, and electrons
Answer:
D
Explanation:
Atomic mass is the total mass of protons, neutrons and electrons of an atom at rest
In the circular flow diagram, what do firms provide to product markets?(1 point)
Answer:
Firms produce goods and services,which they sell to households in return for revenue.
Answer: Goods and Services
Explanation:
Calculate the no. of moles in 25gm of calcium phosphate
Plz Fast Urgent
Answer:
0.162 mol
Explanation:
n=m/M
M= 20*3 + 15*2 + 8*4*2
M=154 g/mol
n=25g/154g/mol
n=0.162 mol
The number of moles in 25 grams of calcium phosphate is 0.162 mol.
What are moles?Mole is a SI unit that is used to measure the quantity of any substance in a specific amount. To calculate the moles, we will divide the mass of the substance by the molar mass of that substance.
n = m/M
Calcium phosphate is a chemical compound that contains calcium and phosphorus or phosphoric acid, and it is used to treat the low calcium in the body and thyroid and parathyroid.
The molar mass of calcium sulfate is 154 g/mol
The mass of calcium sulfate is 25 grams
Putting the value in the equation
n = m/M
n = 25g / 154 g/mol = 0.162 mol
Thus, the moles of calcium sulfate are 0.162 mol.
Learn more about moles, here:
https://brainly.com/question/26416088
#SPJ5
how many g/mL are in 12cg/L
Answer:
0.00012 g/ml
Explanation:
g are 100 x cg, and litres are 1000 x ml, so the number 12 needs to be divided by 100 x 1000 = 100,000 in order to get the correct result.
But you can also work through and figure it out logically.
1 cg = 0.01 g, so 12 cg = 0.12 g
So you have 0.12 g in 1 litre, which is 0.12 g in 1000 ml.
This means that in 1 ml you have 0.12/1000 = 0.00012 g.
Which describes a relationship when calculating the energy of a photon? The energy of the photon is directly proportional to frequency. The energy of the photon is inversely proportional to frequency. As the energy of the photon increases, Planck’s constant increases. As the energy of the photon increases, Planck’s constant decreases.
Answer:
The photon is directly proportional to frquency
Explanation:
E=hf
where E is energy
h is plancks constant and
f is frequency
Answer:
A
Explanation:
Edge 2022
What is the equation to calculate the volume of a cylinder?
O V = (77/4)*72 +h
O V=1* w* h
O V = (4/3)*r
O V = m*d2
Answer:
the equation for cylinders is V = (pi)r2h
none of these are even close but i can do a little more research
sorry if this one wasnt as much help
what is true about chemicals?
A. Chemicals are rarely found on earth
B. Chemicals are never dangerous
C. Chemicals are in many substances in a home
D. Things containing chemicals always cost a lot of money
hi <3
i believe the correct option would be C
hope this helps :)
2.
What is the density of a 625 g cube of metal with a volume of 89 mL?
Answer:
density = 7.02 g/mL
Explanation:
density is mass over volume, just divide
d = 625 g/89 mL = 7.02 g/mL
What should a prepositional phrase include after the preposition?
A.a noun and its modifiers
B.an adjective and an adverb
C.a subject and a predicate
D.an object and its modifiers
Answer:
B
Explanation:
A prepositional phrase should include after the preposition an object and its modifiers. The correct option is D.
What are prepositional phrases?A prepositional phrase is a group of words that contain a preposition with its object and the words that modify it. These are the words that change verbs and nouns.
For example, Mansi is going out with handsome Brian. Brian is the object and the beautiful is the prepositional phrase. The three types of prepositional phrases are:
Adverb prepositional phrases.Adjective prepositional phrases.Prepositional phrases, behave as nouns.If there are two prepositional phrases used in one sentence. The other prepositional phrase will be used as an adverb.
Thus, the correct option is D. an object and its modifiers.
To learn more about prepositional phrases, refer to the link:
https://brainly.com/question/17542837
#SPJ6
WILL MARK BRAINLIEST
Removing the pulp (solid) from the orange juice using a juice strainer.
a chemical change
b Physical change
Taking into account the definition of physical change and chemical change, the correct option is option b. removing the pulp (solid) from the orange juice using a juice strainer is a physical change.
Two types of changes can be distinguished: physical changes and chemical changes.
A physical change is a change that makes something different without changing the composition of the material.
In other word, a physical change is a transformation in which the nature (composition) of matter does not change, so that the substances involved are the same before and after the change.
On the other hand, chemical changes are considered to be those in which the substances involved are transformed into totally different ones.
In other words, chemical changes refer to the process that involves one or more substances that become new substances with different nature and properties.
In this case, removing the pulp (solid) from the orange juice using a juice strainer is a physical change because the pulp and the orange juice are the same before and after the change and their properties do not change.
In summary, the correct option is option b. a physical change.
Learn more:
brainly.com/question/14537837?referrer=searchResults brainly.com/question/19134005?referrer=searchResultsWhat is the density of a piece of metal with a
mass of 23.5 g and a volume of 11.1 mL? You
will report in units of g/mL. Please answer only
with a number. Include only two decimals in
your answer.
The density of the piece of metal is 2.12g/mL
HOW TO CALCULATE DENSITY:
Density, which refers to the mass of an object in relation to its volume, can be calculated by dividing mass by volume. That is;Density (g/mL) = mass (g) ÷ volume (mL)
According to this question, a piece of metal has a mass of 23.5 g and a volume of 11.1 mL, hence, the density can be calculated as follows:Density = 23.5/11.1
Density = 2.12g/mL
Learn more: https://brainly.com/question/2040396
How do double replacement reactions relate to Combustion reactions
Explanation:
A single-replacement reaction replaces one element for another in a compound.
A double-replacement reaction exchanges the cations (or the anions) of two ionic compounds.
A precipitation reaction is a double-replacement reaction in which one product is a solid precipitate.
Solubility rules are used to predict whether some double-replacement reactions will occur.
Round the following number to 2 significant figures:
94.5
Answer:
95
Explanation:
94.5 contains 3 significant figures so to round it to just two, we can just round the number to the nearest whole number. Remember that we round up if we have 5 and up then we would round down if we have 4 and below.
94.5 → 95
Best of Luck!
measure 25 mL of water in a 50 mL graduated cylinder. pour the 25 mL of water into the 250 mL beaker and record the mass of the beaker + water. Now find the mass of just the water.
Answer:
so i think mass of water is 235 ml
PLEASE HELP ON EASY CHEMICAL PROPERTIES
Answer:
1, just I) color.
Explanation:
Physical properties are the properties that can be observed without changing the composition of a substance, such as color, temperature, density, and boiling point.
A physical change is a change in the substance that only modifies its aggregation state, such as solidification, and boiling.
Chemical properties are the properties that need a reaction to being observed, such as combustibility, which needs a combustion reaction to being quantified.
When a chemical reaction occurs, and the composition of the substance change, it's a chemical change.
So, heating copper with carbon is a chemical reaction, and purification by electrolysis is too. Color is the only physical property.
What is a net ionic equation?
Answer :
a chemical equation in
which the electrolytes in aqueous
solution are expressed as dissociated
ions.
Have good day !!
The strength of van der Waals forces increases as:
A. molecular size decreases
B. molecular size increases
C. number of electrons increases
D. number of electrons decreases
Answer:
B and C
Explanation:
is it multiple choice question??
Van der Waals forces are the interaction between the molecules and the atoms. It increases with an increase in the molecular size and the number of electrons. Thus, options B and C are correct.
What are Van der Waals force?
Van der Waals forces are the weak forces of attraction and repulsion present between the atoms and the molecules of the compounds. They are also called London Dispersion Forces and dipole-dipole forces.
An increase in the number of electrons and size of the molecule increases the surface area and the electron cloud which in turn, increases the Van der Waals force.
The intermolecular force increases as in large atoms or molecules the valence are held loosely as they are far from the nucleus or the center of the atom.
Therefore, the size and the electron increase the Van der Waals force.
Learn more about Van der Waals force here:
https://brainly.com/question/11457190
#SPJ5
Would you categorize temperature as an Intensive or extensive property explain plz !!!
Extensive properties depend on the amount of matter in a sample, While Intensive properties do not depend on the amount of matter in a substance.
~• 3. Using the following formula Force (N) = mass (kg) x acceleration
(m/s). How is the force of a 50kg being drops at 2m/s^2
o
Explanation:
Hope it helps.
Thank you
GIVING 20 POINTS!! Apply Concepts Two chemists each plan an investigation in which they will combine hydrogen gas with chlorine gas to observe the chemical reactivity. The plans differ in that one will use 25 milligrams each of hydrogen and chlorine, and the other will use 1000 times this amount, i.e., 25 grams each of hydrogen and chlorine. Can the investigations reach similar conclusions about the reactivity of hydrogen with chlorine? Explain.
Answer:
Yes, the investigations will reach similar conclusions about the reactivity of H2 and Cl2
Explanation:
1. The law of multiple proportions says that when elements form compounds, the proportions of the elements in those chemical compounds can be expressed in small whole number ratios. This means that regardless of whether 1000 times more of the products are used, the reactivity of the products is established by the chemical reaction
2. The law of multiple proportions is an extension of the law of definite composition, which states that compounds will consist of defined ratios of elements.
3. A reaction with more reactants will need more care because more products are produced, which can be toxic
4. H2 and Cl2 reactivity does not depend on the quantities but the chemical properties of each compound
difference between Ammonia and ammonium..
plz do not scam
As a professor Daniel must complete a research project each year in order to
stay on staff. Daniel is an engineer and has to deal with many complicated
mathematical calculations. Knowing this fact Daniel would most likely concern
himself with qualitative research,
Explanation:
Add our site sources in order to be advantage of knowledge
Which of the following is NOT a pure substance?
а.
b.
C.
d.
Answer:
lol where is your questions??
