Answer:
I think the answer is false
Difference girteen tungsten and nichrome
Answer:Tungsten is made of tungsten while Nichrome is made of nickel chromium. ... Tungsten is used to make filament of bulbs. Nichrome have high resistivity than tungsten.
Explanation:i hope u have a wonderful night and stay safe
which basic postulates of Dalton's atomic theory are modified by the modern atomic theory
Answer:
Dalton's atomic theory has been modified as
Explanation:
Atoms of same element may not have same atomic mass. For example, some atoms of chlorine have atomic mass 35 amu while others have atomic mass 37 amu. Such atoms of same element having different atomic masses are called isotopes
Answer:
On the basis of new experimental facts, Dalton's atomic theory has been modified as: ... Atoms of same element may not have same atomic mass. For example, some atoms of chlorine have atomic mass 35 amu while others have atomic mass 37 amu. Such atoms of same element having different atomic masses are called isotopes.
Explanation:
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Which of the following factors is the most in-
fluential in the formation of soil?
How do movement of rocks cause earthquakes?
Answer:
Well its actually the movement of tectonic plates under the earths surface that when the slide along each other, pull away from each other, or push up against each other they create earth quakes.
Explanation: yes.
(HELP ASAP) what is the reaction for Si + S₈ --> Si₂S₄
Answer:
Synthesis reaction~~~~~~~
Explanation:
Which organelle in cytoplasm is responsible for carrying hereditary information?
Answer:
Nucleus
Explanation:
The nucleus serves as the cells command center, sending direction to the cell to grow, mature, divide, or die
which substance is reduced ?
Cl^2 +2KBr= 2KCl + Br2
Answer:
Initially Br is in -1 oxidation state and Cl in 0 oxidation state. Finally Cl is in -1 o.s. and Br in 0.
This means that Br has oxidised from -1 to 0 and Cl is reduced from 0 to -1.
KBr is reducting agent as it helps Cl to reduce.
Cl2 is oxidising agent as it helps Br to oxidise.
Explanation:
2. How much heat is needed to convert 2.7 moles of ethanol at its boiling
point from liquid to vapor?
Answer:
así que busca, pero la respuesta está en por cierto Explanation:
The quantity of heat needed to convert 2.7 moles of ethanol at its boiling point from liquid to vapor is 104.49 kJ
From the question,
We are to calculate the heat needed to convert 2.7 moles of ethanol from liquid to vapor.
Using the formula
Q = n × ΔHvap
Where Q is the quantity of heat
n is the number of moles
and ΔHvap is the enthalpy of vaporization
From the given information,
n = 2.7 moles
and
ΔHvap of ethanol = 38.7 kJ/mol
Putting the parameters into the formula, we get
Q = 2.7 × 38.7
Q = 104.49 kJ
Hence, the quantity of heat needed to convert 2.7 moles of ethanol at its boiling point from liquid to vapor is 104.49 kJ
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What are chemical formulaes?
give your own response!!
Answer:
is a way of presenting information about the chemical proportions of atoms
Explanation:
What is the un-balanced equation for this
reaction?
Mg +0 --> Mgo
Mg + 02
--> Mg02
Mg + 02 --> Mgo
Answer:
2Mg + O2 → 2MgO
Explanation:
HELP PLEASE || TEN PTS WILL MARK BRAINLEST ||Reaction B could produce a substance with a pH of...
Group of answer choices
4.
14.
10.
7.
Answer:
the answer is 4
Explanation:
i took the test and got it right and i would recommend using quizlet it has these flash cards and the answers are there you just click on the one that says your question and it will say your answer on the back. It helps with most of my test! Hope this helps (:
You need 2 pieces of bread, 1 tablespoon of peanut butter and 2 tablespoons of jelly to make a
sandwich. If you have 10 pieces of bread, 4 tablespoons of peanut butter and 20 tablespoons of jelly,
what is the limiting reactant?
Answer:
peanut butter
Explanation:
because you have 10 pieces of bread, 4 tbs of peanut butter, and 20 tbs of jelly, meaning you can make 5 sandwwitches with the bread, 4 sandwitches with the peanut butter, and 10 sandwitches with the jelly. so you dont have enough peanut butter to make all the sandwitches
According to the given scenario, If one have 10 pieces of bread, 4 tablespoons of peanut butter, and 20 tablespoons of jelly, the limiting reactant will be peanut butter.
What is a limiting reactant?
The reactant that gets consumed first in a chemical reaction and result in limiting the formation of product is referred to as a limiting reactant.
According to the given scenario, the quantity of peanut butter will get consumed first so it will act as a limiting reactant.
Thus, If one have 10 pieces of bread, 4 tablespoons of peanut butter, and 20 tablespoons of jelly, the limiting reactant will be peanut butter.
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Guys I need ur help I might as well just ask ur smarties for help ahah n yup I’ll be brainlisting;)
1) What have been the wider effect on the community of nuclear accidents? (Chernobyl)
Answer:
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Water forms according to the equation below: 2H2(g) + O2(g) 2H2O(g) Hrxn = -483.64 kJ How much energy is released during the formation of 1 mol H2O(g)?
Answer:
Hrxn = -241.82 kJ
Explanation:
2H2(g) + O2(g) --> 2H2O(g) Hrxn = -483.64 kJ ............. (i)
The equation for formation of 1 mol of H2O is given as;
H2(g) + 1/2O2(g) --> H2O(g) ................. (ii)
Eqn (ii) is obtained by dividing eqn (i) by 2
That means the heat of reaction for eqn (ii) is given as;
Hrxn = -483.64 kJ / 2
Hrxn = -241.82 kJ
Answer:-241.82 kJ
Explanation:
your welcome kaylee and have a great day ;)
Iron is extracted from its ore (hematite) in the blast furnace. Which gas is produced as a waste product?
Answer:
CO2
Explanation:
CO2 or carbon dioxide is produced when iron is extracted from its ore. Carbon monoxide Co is used as reducing agent in iron extraction. In this reaction iron ore is reduced to iron and CO is oxidized to CO2 or carbon dioxide which is released in the process. There extraction of iron is redox reaction.
Any skilled chemists want to give me some backup?
Answer:
SO2, HCI and NH3
Explanation:
these three compounds vary inversely with the temperature
Red is dominant to white for flower color in a particular plant. If a red flowered plant (RR) is crossed with a white flowered plant (rr), what color will the offspring be?
Answer:
The offspring will all have red-colored flowers
Explanation:
A dominant character is one that is always expressed when it is present.
A recessive character or trait is one that is only expressed in the absence of the dominant character. Thus, when the dominant and recessive character are both present in an organism, the recessive character will be hidden while the dominant character will be expressed.
According to Menedel's laws of inheritance, in the cross between the dominant (RR) red-flowered plant and the recessive (rr) white-flowered plant, the genotype of the offspring will be as follows:
RR x rr = Rr, Rr, Rr,Rr
The offspring are all heterozygous for flower color. However, since red flower color is dominant over white flower color, all the offspring produced will have red-colored flowers.
which location will experience the greatest amount of weathering
Answer:
Explanation:
Weathering occurs fastest in hot, wet climates. It occurs very slowly in hot and dry climates.
Where glucose is broken down into smaller molecules to produce energy. The second part of the process takes place in the
Answer:
Mitochondria
Explanation:
Glucose in an energy molecule contained in carbohydrate food substances. The end product of the digestion of carbohydrate is glucose which is broken down to produce energy.
The sequence of breakdown of glucose is as follows; In the first step, 6-carbon glucose is broken down into two molecules of 3-carbon pyruvic acid. This occurs in the cytoplasm of the cell. It is an anaerobic process.
In the second step which occurs in the mitochondrion, each of the molecules of pyruvic acid is now oxidized to carbon dioxide and water and energy is produced in the process.
How many atoms are in 5.31 mol of Iron?
Answer:
3.77 moles of Fe contain 2.27 × 10, 24 as an exponent
Two or more substances combined but not chemically, are called what?
Answer:
a mixture
Explanation:
Two or more substances combined chemically, are called a compound
Need quick! Please help rn! THANK YOU!
Answer:
B. Unbalanced force
Explanation:
Answer:
I think its unbalanced force
Explanation:
crazy what a quick go.ogle search can do! :)
How many L of a 7.5 H2SO4 stock solution would you need to prepare a dilute solution 100 L of 0.25M H2SO4
Answer:
3.33 L
Explanation:
We can solve this problem by using the equation:
C₁V₁=C₂V₂Where the subscript 1 refers to one solution and subscript 2 to the another solution, meaning that in this case:
C₁ = 0.25 MV₁ = 100 LC₂ = 7.5 MV₂ = ?We input the data:
0.25 M * 100 L = 7.5 M * V₂V₂ = 3.33 LThus the answer is 3.33 liters.
What is the molarity of NaOH if 300.mL of
5.00M HCl is titrated with 200.mL of NaOH?
what is the formula for the compound formed by Ba2+ and Mn04 ?
Answer:
Barium permanganate | Ba(MnO4)2 - PubChem.
Description: Barium permanganate appears as ...
Synonyms: BARIUM PERMANGANATE7787-3...
Molecular Formula: Ba(MnO4)2 or BaMn2O8
Molecular Weight: 375.2 g/mol
Explanation:
How is an acid or base like a solution? How is it different?
find the area given rectangle.
The length and and breadth of a rectangle are 3abc³ and 4abc units. The area of rectangle is __ sq.unit .
Answer:
The perimeter of a Rectangle P= 2(l + b)
Area of a Rectangle A = l × b
Which equation represents a neutralization reaction?
Answer: The equation represents a neutralization reaction is HNO3(aq) + KOH(aq) → KNO3(aq) + H2O(). The answer is letter C.
Answer:
The answer is C.
Explanation:
Edge2021
The diagram shows the different models of the atom that eventually led to the modern atomic theory.
Which model was proposed as a result of Rutherford's scattering experiment where positive particles did not pass straight through a foil as expected? (5 points)
Model A
Model B
Model C
Model D
Answer:
B.
Explanation:
The atomic model represents the position of the sub-atomic particles. Model A was proposed after Rutherford's scattering experiment where the positive particles were deflected in the middle. Thus, option A is correct.
What was Rutherford's atomic model?Rutherford's atomic model proposed the presence of the positive nucleus in the middle of the atom while the electrons surrounded them in their orbitals with a negative charge.
He performed the scattering experiment where alpha particles emitted by the radioactive element were used to locate the positions of the electrons, neutrons, and protons.
According to the experiment, model A, best fits as the nucleus made of protons and neutrons takes the center of the atom with negative electrons surrounding them. The nucleus is small as compared to the entire atom.
Therefore, option A. model A best proposes Rutherford's model.
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how many moles of MgO can be made from 10 moles of fe2O3?
Answer:
Fe 2 O3 .
Explanation: