Answer:
C = 10
Explanation:
Given data:
Moles of O₂ = 35 mol
Moles of C₂H₆ react = ?
Solution:
Chemical equation:
2C₂H₆ + 7O₂ → 6H₂O + 4CO₂
Now we will compare the moles of O₂ with C₂H₆.
O₂ : C₂H₆
7 : 2
35 : 2/7×35 = 10 mol
Option C is correct.
Answer:
c. 10
Explanation:
a p e x , just took the quiz
3.5 liters to cubic centimeters
Answer:
3500
Explanation:
calculate the energy processed by a single proton of the each following types electromagnetic radiation:
a.6.32 x 10^20 s-1
b. 9.50 x 10^13 hz
c.1.05 x10^16 s^-1
#G10 Chemistry
a. 4.2 x 10⁻¹³ J
b. 6.3 x 10⁻²⁰ J
c. 7 x 10⁻¹⁸ J
Further explanationRadiation energy is absorbed by photons
The energy in one photon can be formulated as
[tex]\large{\boxed{\bold{E\:=\:h\:.\:f}}}[/tex]
Where
h = Planck's constant (6,626.10⁻³⁴ Js)
f = Frequency of electromagnetic waves
a.
[tex]\tt E=6.626.10^{-34}\times 6.32.10^{20}=4.1876.10^{-13}~J[/tex]
b.
[tex]\tt E=6.626.10^{-34}\times 9.50.10^{13}=6.2947.10^{-20}~J[/tex]
c.
[tex]\tt E=6.626.10^{-34}\times 1.05.10^{16}=6.9573.10^{-18}~J[/tex]
electron configuration of yttrium
Answer:
[Kr] 4d1 5s2
Hope this helped :)
Help me I don’t understand this
WHOEVER HELPS WILL GET BRANLIEST!! ONLY 5 QUESTIONS PLEASE HELP ME!!
1. Which element has 2 electrons in the 4s energy level
2. The ion with a 2- charge in the 3rd energy level
3. This nonmetal is likely to form an ion with a 3- charge that has the highest IN in the group
4. A metalloid in period 4 with 2 electrons in the p sub level
5. The smallest of the -2 ions
Answer:
1. is calcium 2,,,halogens 3 group 16 valence electrons non metal.4 .selenium
Explanation:
5. Palio atomic or monatomic hope tgis helps ig right give braniest
What is a good reducing agent?
A. A substance that is good at oxidizing another atom
B. A substance that is good at reducing another atom
C. A substance that is a good electron acceptor
D. A substance that is easily reduced in a reaction
Answer:
B. A substance that is good at reducing another atom
Explanation:
Reducing agents:
Reducing agents reduced the other element are it self gets oxidized. They have very low ionization energy and easily lose the electron.
Consider the following reactions.
4KI + 2CuCl₂ → 2CuI + I₂ + 4KCl
the oxidation state of copper is changed from +2 to +1 so copper get reduced. It means it gain one more electron.
CO + H₂O → CO₂ + H₂
the oxidation state of carbon is +2 on reactant side and on product side it becomes +4 so carbon get oxidized. Carbon loses it two more electron and act as reducing agent.
Oxidizing agents:
Oxidizing agents oxidize the other elements and itself gets reduced.
Oxidation:
Oxidation involve the removal of electrons and oxidation state of atom of an element is increased.
Reduction:
Reduction involve the gain of electron and oxidation number is decreased.
I need help plzzz ahahnsnsnsn
Answer:
1=d
2=ricter scale
Explanation:
A chemist is studying a substance and determines that it is a compound. What MUST be true of the substance?
H2O2(1) --> H2O2(g)
Figure 1
Is this a physical or chemical reaction?
Answer:
Physical reaction
Explanation:
Since there are no other chemicals in the equation, but the state of the chemical is going from a liquid to a gas, you can conclude that this is a physical reaction.
How is the atomic number used to determine the identity of an atom
Answer:
"The number of protons in one atom of an element determines the atom's identity, and the number of electrons determines its electrical charge. The atomic number tells you the number of protons in one atom of an element. It also tells you the number of electrons in a neutral atom of that element."
Explanation:
-irion-isd.org:)
Hope this helps:) Can I Pleasse have brainliest?!
The number of protons in an element's atom is represented by the element's atomic number. The atomic number identifies the element because the number of protons establishes the identity of the element.
What is atomic number ?The charge number of an atomic nucleus is the chemical element's atomic number, also known as nuclear charge number. This is the number of protons present in the nucleus of each atom of that element, or the proton number, for conventional nuclei.
The number of protons in an atom is the atomic number. It is sometimes referred to as the proton number for this reason. The capital letter Z is used to represent it in calculations.
The word zahl, which translates to "number of numerals" in German, or "atomzahl," a more recent word that means "atomic number," are the origins of the letter Z.
Thus, the number of protons in an element's atom is represented by the element's atomic number. The atomic number identifies the element because the number of protons establishes the identity of the element.
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Neutrons and protons have the same relative mass (true or false)
CANN YOU HELP ME PLEAAsee:((( it's due in 20 mins
Answer:
The answer is A! Hope you do Great!
Explanation:
Elements that have a low force of attraction tend to have- a) High ionization energy and low electronegativity b) Low ionization energy and low electronegativity c) High ionization energy and high electronegativity d) Low ionization energy and high electronegativity
Answer:
Explanation:
Low electronegativity and low ionization energy
Forces and Motion:Question 2
A student pushes a box to slide it across the floor. Which statement best explains why the box begins
to move?
Select one:
0 The weight of the box is less than the force of friction.
O
The weight of the box is greater than the force of friction.
The applied force is greater than the force of friction.
O
The applied force is less than the force of friction
Answer:
the applied force is less than the force of friction.
Explanation:
when warm air and cold air mix why will the warm air move upward?
The movement of tectonic plates in two locations is described below:
Location A: Tectonic plates collide and one plate moves over the other while the other plate is pushed deep into the mantle
Location B: Tectonic plates slide past each other
Which statement is most likely correct?
Group of answer choices
Mountains may form in Location B but not in Location A.
There is no chance of earthquakes in the two locations.
Volcanic eruptions may occur in both locations.
Subduction happens in Location A but not in Location B.
Answer:
It is b
Explanation:
Because the mountain comes up not down
A civil engineer design mostly
Answer:
They design building structures mostly .-.
Explanation:
When is a frog like a fish?
Answer:
When it swims? Or in the tadpole stage.
Visible light has a higher frequency than?
Answer:
The color purple, or equivalently violet
Explanation the end of the visible electromagnetic spectrum, having the highest frequency of any light wave. The reason we see different colors is because of this difference in frequency, where violet light has higher frequency of light waves than blue light.
Which of the following states of matter has a definite shape?
A solids and liquids only
B. liquids and gases only
C.solids only
D. liquids only
Answer:
A. Solids and liquids only
Explanation:
Which of the following is a property that nickel, iron, and cobalt DON'T share?
a) Shiny
b) Poor conductivity of electric current
c) Good conductivity of thermal current
d) None of the above
is a banana a kinetic energy or potential energy
Answer:
Potential
Explanation:
The pieces of land surrounded by water on all sides. *
Beaches
Barrier Islands
Delta
Tides
Answer:
Barrier Islands xtrvhb
When _____________ light strikes an object, the _____________ of the object depends on how the object _____________ and/or _______________ the colors of light.
Answer:
When white light strikes an object, the color of the object depends on how the object absorbs and/or reflects the colors of light.
Explanation:
White light is composed of seven distinct colours of light; red, orange, yellow, green, blue, indigo and violet. These colors can be seen when white light is passed through a prism.
The color of an object depends on the colors in the light that falls on it and also on the ability of this object to absorb or reflect this light.
When white light strikes an object, the color of the object depends on how the object absorbs and/or reflect the colors of light.
For example, when white light falls on an object and the object appears green, it means that that object has absorbed all the other colors of white light but reflects green light.
Can someone please help me with the three question
Answer:
the atomic number of magnesium is 12 the atoms that cause reactions are 2 the rest are the research on them later today
The graph below represents a function.
What is the value of f(4)
Answer:
I'm not sure if this is what your looking for but, the ordered pair would be 2,4
Explanation:
the line intercepts the y axis at point 2 and same on the x axis the line intercepts at 4
The graph below represents a function. The value of f(4) is -4
What is function?Function is defined as a phrase, rule, or law defining a relationship between one variable and another.
Functions are common in mathematics and are required for the formulation of physical relationships in the sciences.
There are various types of functions.
Liner functionIdentical functionQuadratic functionRational functionAlgebraic function Polynomial function Cubic function etc. and many moreThe value of f can be calculated by using formula
fx = 4 - x2
f(4) = 4 - 4 x 2
f(4) = 4 - 8
f(4) = -4
Thus, the graph below represents a function. The value of f(4) is -4
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Ian needs to separate a liquid mixture of alcohol and water. Which physical property will best help Ian separate the mixture?
A. mass
B. volume
C. boiling point
D. melting point
Answer:
B. Volume Your welcome
A student measured 30.0 mL of water in one graduated cylinder and measured 90.0 mL of water in another graduated cylinder. Which statement is true? 4 points The one containing 90.0 mL has the larger density. They both would be the same, as the density of matter is not affected by amount. The one containing 30.0 mL has 1/3 the density of the one containing 90.0 mL.
Answer:20
Explanation:not true jus doing it for points
A scientist researching methods to convert used motor oil into gasoline would most likely be investigating which process?
joining molecules into longer chains
breaking molecules into smaller chains
changing straight chains into rings
changing rings into straight chains
Answer:
breaking molecules into smaller chains
Explanation:
A scientist researching methods to convert used motor oil into gasoline would most likely be investigating the process of breaking molecules into smaller chains.
How are molecules broken down?Larger molecules can be broken down into smaller molecules by breaking the bonds that hold them together.
According to this question, a scientist is trying to research methods to convert used motor oil into gasoline.
The most likely research methods that the scientists would use to investigate is the process of breaking molecules into smaller chains.
Learn more about breaking bonds at: https://brainly.com/question/14997036
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what period has only two valence electrons when it is filled?
Answer:
Across each row, or period, of the periodic table, the number of valence electrons in groups 1–2 and 13–18 increases by one from one element to the next. Within each column, or group, of the table, all the elements have the same number of valence electrons.Oct 30, 2019
Explanation:
