Give evidence to support or dispute: “In nature, the chance of finding one isotope of an element is the same for all elements.”
Answers
Answer:
False, isotopes have different occurrence percentages, so the changes are different.
Explanation:
Hello,
In this case, since it is false that the isotopes of all the elements can be found with the same chance (occurrence) we can consider the following facts:
1. Carbon atom has two major occurring isotopes: C-12 (98.93%) and C-13 (1.07%).
2. Bromine atom has two major occurring isotopes: Br-79 (50.69%) and Br-81 (49.31%).
3. Calcium has four major occurring isotopes: Ca-40 (96.941%), Ca-42 (0.647%), Ca-43 (0.135%) and Ca-44 (2.086%).
Which show us that the chances of finding any isotope differ among elements.
Regards.
The statement presented in the question above is false, as the percentage of occurrence of an isotope cannot be defined and adopted for all elements, as this varies.
We can arrive at this answer because:
Isotopes are chemical elements that have the same amount of protons.However, these elements have different mass numbers and neutrons from each other.Although there is a percentage of occurrence of isotopes in nature, this percentage varies among elements.Mainly because these elements compose different substances and some may have low occurrence percentages and others high percentages.An example of this can be seen in Calcium (Ca) isotopes, where the Ca-40 isotope has an occurrence percentage equal to 96.9%, while the Ca-42 isotope has an occurrence percentage equal to 0.64%.
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Related Questions
Express the measurement 0.530060 g three significant figures
Answers
Answer:
0.530 g.
Explanation:
The express the measurement 0.530060 g we need to remember first that:
- The zeros to the left of the amount do not count as significant figures
- All non-zero numbers count as significant figures
- The zeros that are between digits significants are significant figures
Hence, the three significant figures of the measurement 0.530060 g are:
0.530060 g = 0.530 g
Therefore, the three significant figures of the measurement 0.530060 g are 0.530 g.
I hope it helps you!
al Science Unit Test Unit Test Active 21 22 23 24 25 Which argument best explains the charge of an atomic nucleus? An atomic nucleus is positively charged because it is composed of neutrons. OAn atomic nucleus is positively charged because it is composed of protons. OAn atomic nucleus is negatively charged because it is composed of electrons O An atomic nucleus is negatively charged because it is composed of neutrons.
Answers
Answer:
An atomic nucleus is positively charged because it is composed of protons.
Explanation:
Protons and neutrons are what the nucleus contains. Neutrons have a relative charge of 0, while protons are positively charged.
Which phrase best defines a prototype? The final product, which has undergone extensive testing and redesign a model that has been redesigned and retested several times the criteria established to help solve a problem a model from which later versions are developed
Answers
Answer:
a model from which later versions are developed
Explanation:
When we refer to something as a prototype, it simply means that that thing is a model product based on which many more of its kind can be made.
When trying to design a new product, prototypes are often made and tested. If they pass all the required quality tests, more products can now be designed based on the original product.
Answer:
(d)
Explanation:
a model from which later versions are developed
When a nucleus breaks up to gain a more stable ratio of protons and neutrons
a
radiation poisoning
b
radioactive tracing
c
radioactive dating
d
radioactive decay
Answers
What percent of Earths feshwater is found as a solid?
Answers
Answer:
68.7% is the percent of frozen freshwater.
Help!
The standard unit of mass is __________.
a. gram
b. pound
c. kilogram
Answers
Answer:
kilogram ;)) The kilogram is the standard
When you remove energy from particles they move _____
and the matter _____
Answers
Answer: slower and closer together,
Explanation:
What is the density of the liquid in g/ml?
Answers
what is the name for a substance that cannot be separated into simpler substances ?
a. element
b. compound
c. alloy
d. mixture
Answers
Answer:a element
Explanation:
Compounds, alloys and mixtures all are made up of many different elements
2) The two solid blocks represented in the diagram are made of the same material and are under the same temperature and pressure conditions. If the mass of block X is 54 grams, what is the mass of block Y?
Answers
Answer:
54 g
Explanation:
We'll begin by calculating the density of X. This can be obtained as follow:
Mass of X = 54 g
Length (L) = 9 cm
Breadth (B) = 2 cm
Height (H) = 1 cm
Volume of X = L × B × H
Volume of X = 9 × 2 × 1
Volume of X = 18 cm³
Density of X =?
Density = mass /volume
Density of X = 54/18
Density of X = 3 g/cm³
Finally, we shall determine the mass of Y as follow:
Length (L) = 3 cm
Breadth (B) = 3 cm
Height (H) = 2 cm
Volume of Y = L × B × H
Volume of Y = 3 × 3 × 2
Volume of Y = 18 cm³
Density of Y = Density of X (since they are made of the same material)
Density of X = 3 g/cm³
Density of Y = Density of X = 3 g/cm³
Mass of Y =.?
Density = mass /volume
3 = mass of Y /18
Cross multiply
Mass of Y = 3 × 18
Mass of Y = 54 g
Answer: 54
Multiply your answer
The students are studying the process of how controlled gasoline explosions that take place in a cars engine change the potential chemical energy into the kinetic mechanical energy that moves the car.
which statement is true about this reaction?
A..This is an exothermic reaction because energy is absorbed.
B.this an endothermic reaction because energy is absorbed.
C.this is an exothermic reaction because energy is released
D.this is an endothermic reaction because energy is released
Answers
Answer:
C.this is an exothermic reaction because energy is released
Explanation:
The explosion of gasoline in a car engine is an exothermic reaction.
An exothermic reaction is one in which heat is given out to the environment. That means, heat is released during the reaction.
When gasoline undergoes controlled explosion in car engines, heat is released, hence the answer.
Can you find two ways that carbon can get from the ocean to the lithosphere? (The lithosphere is the rigid layer of the Earth, including the crust and part of the mantle.
Answers
2. ocean -> marine plants -> sediments -> lithosphere
A physical property of matter that does not depend on the amount of matter present is called a(n) ___ property.
A) chemical
B) normal
C) intensive
Answers
Answer:
chemical
Explanation:
Answer:
A: Chemical
Explanation:
I hope this helps
Sound waves travel faster through liquid water than through air because
A.
water is hotter than air.
B. water is less dense than air.
c. the particles of the liquid transfer energy better than the particles in a gas.
D. the particles in the liquid vibrate more than the particles in a gas.
HURRY PLEASE HELP HELPPP
Answers
Answer:
Sound travels faster in water compared with air because water particles are packed in more densely. Thus, the energy the sound waves carry is transported faster
Explanation:
A sample of aluminum metal has a mass of
8.4 g. The volume of the sample is 3.1 cm3. Calculate
the density of aluminum.
Answers
Answer:
8.4/3.1 =2.709
Explanation: density is mass divided by volume
The density of aluminum will be 2.71 g/cm^3 solve for 8.4g v=3.1 cm3, 8.4g/3.1 cm3, and 8.4g/d=2.71 g/cm3.
Composition of aluminum?Natural environments do not contain pure aluminum. Beginning with bauxite ore, which is made up of hydrated aluminum oxide (40% to 60%) combined with silica and iron oxide, the manufacturing of primary aluminum metal can begin. For every 4 to 5 of bauxite ore, 2 tone of alumina are produced.
Is aluminum a type of metal?Aluminum (Al), often known as aluminum, is a chemical element that belongs to the periodic table's major Group 13 (IIIa, also known as the boron group). It is a light, silvery white metal. The most prevalent metallic element in the crust of the Earth is aluminum, which is also the most frequently utilized nonferrous meta
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is mixing sugar and coffee chemical or physical
Answers
The density of solid aluminum is 2.70 g/cm3. If a 1g piece of aluminum is dropped in a cup of water, what will happen to the aluminum? (The density of water is 1.00 g/cm3.)
Answers
Answer: c
Explanation: I took it
Answer:
IT WILL HOVER IN THE MIDDLE
Explanation:
A glass of fresh milk with 1% fat is an example of..,
1) a compound
2) an element.
3) a homogeneous mixture.
4) a heterogeneous mixture.
Answers
Answer
the answer is a.element because nothing is with it
What is the color and wavelength of light with 2.88 x 10-19 J of energy?
Answers
Answer : The color and wavelength of light is red and [tex]6.9\times 10^{-7}m[/tex] respectively.
Explanation :
Given:
Energy = [tex]2.88\times 10^{-18}J[/tex]
Now we have to determine the wavelength of light.
Formula used:
[tex]E=\frac{hc}{\lambda}[/tex]
where,
E = energy
h = Planck's constant = [tex]6.626\times 10^{-34}J.s[/tex]
c = speed of light = [tex]3\times 10^8m/s[/tex]
[tex]\lambda[/tex] = wavelength of light
Now putting all the given values in this formula, we get:
[tex]2.88\times 10^{-18}J=\frac{(6.626\times 10^{-34}J.s)\times (3\times 10^8m/s)}{\lambda}[/tex]
[tex]\lambda=6.9\times 10^{-7}m[/tex]
From the electromagnetic spectrum we conclude that the color of the light will be red of wavelength [tex]6.9\times 10^{-7}m[/tex].
Therefore, the color and wavelength of light is red and [tex]6.9\times 10^{-7}m[/tex] respectively.
Is a microwave oven ac or dc
Answers
Answer:
Microwave Ovens run on AC Input from the power supply.
Answer:
Its an AC
Explanation:
microwave ovens run on AC Input from the power supply.
5. What must occur for a change to be a chemical reaction?
Answers
Answer:
A chemical reaction happens when two substances combine into a new one through chemical synthesis or chemical decomposition for two or more.
Explanation:
Help!
Which particle diagram represents the arrangement of F₂ molecules in a sample of fluorine at 95 K and standard pressure?
Answers
I'm pretty certain the answer is 2) because fluorine is a diatomic gas meaning it travels with 2 molecules (simplified). It is a gas so molecules should also be spread out so the answer cannot be 3) or 4).
Hope this helps! :)
Fluorine is a halogen that is the lightest and is highly toxic. Moreover, it exists in diatomic state.
At standard temperature and pressure, fluorine exists as gas.Fluorine exists as a diatom, i.e. [tex]F_{2}[/tex].It exists in gaseous form and thus, the molecules of this gas are far apart.Thus, it can be concluded that the particle diagram 2 best represents the fluorine gas in the given temperature and pressure.
Hence, the correct answer is option 2.
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10.How do you make sure there is no cross contamination of your samples of
substances?
Answers
what are the properties of covalent compound
Answers
•Low enthalpies of fusion and vaporization These properties are usually one or two orders of magnitude smaller than they are for ionic compounds.
Select the correct answer.
Which statement is true?
Answers
Answer:
which statement is true what is the question
The amount of material
in an object is called
Answers
Answer:volume
Explanation:
Reactant A contains 40 J of energy, and Reactant B contains 33.5 J of energy. The reactants combine to form product AB, which contains 104 J of energy. What is the energy transformation?
a) Energy is absorbed because the product has more energy than the reactants have.
b) Energy is absorbed because the product the product has less energy than the reactants have.
c) Energy is lost because the product as more energy than the reactants have.
d) Energy is lost because the product has less energy than the reactants have.
Answers
Answer:
A
Explanation:
Energy is absorbed because the product has more energy than the reactants have.
please help me pleaseeee
Answers
Answer:
B.
Explanation:
Answer:
B.
email her superviser so that he can respond to the sender's question.
which electron configuration represents excited excited state for a potassium Atom
Answers
____hybrid orbitals form when one s- and two p-orbitals mix. The resulting electron domain geometry is____ If one of the hybrid orbitals is filled with a lone pair of electrons, a _____ geometry forms when the atoms bond with other atoms.
Answers
Answer: 1. three sp2
2.trigonal planar
3. bent
Explanation:
edg
[tex]sp^2[/tex] hybrid orbitals form when one s- and two p-orbitals mix. The resulting electron domain geometry is trigonal planar. If one of the hybrid orbitals is filled with a lone pair of electrons, a bent geometry forms when the atoms bond with other atoms.
What are orbitals?A mathematical function depicting the wave nature of an electron or a pair of electrons present in an atom.
[tex]sp^2[/tex] hybrid orbitals form when one s- and two p-orbitals mixes. The resulting electron domain geometry is trigonal planar. If one of the hybrid orbitals is filled with a lone pair of electrons, a bent geometry forms when the atoms bond with other atoms.
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