Answer:
a
Explanation:
What is the mass of 5.119 102 molecules of copper sulfate
(CuSO4)?
Answer:
Mass = 135.66 ×10⁻²¹ g
Explanation:
Given data:
Number of molecules of CuSO₄= 5.119×10²
Mass of CuSO₄= ?
Solution:
The given problem will solve by using Avogadro number.
1 mole contain 6.022×10²³ molecules
5.119×10² molecules ×1 mol / 6.022×10²³ molecules
0.85×10⁻²¹ mol
Mass in grams:
Mass = number of moles × molar mass
Mass = 0.85×10⁻²¹ mol × 159.6 g/mol
Mass = 135.66 ×10⁻²¹ g
Our digestive enzymes are able to break the alpha linkage in potatoes but not the ?? Linkage in paper
Answer:Beta
Explanation:
I watched the video and I got it wrong, the right answer was beta. I can’t explain why because I’ve already forgotten lol
Digestive tract have digestive enzymes which are not able to break beta linkages as humans do not have enzymes which breakdown beta linkages.
What is digestive tract?
It consists of the gastrointestinal tract along with the accessory organs which are present in digestion process . It involves the breakdown of complex food into smaller components which can be easily assimilated and absorbed by the body.
The digestion process has 3 phases: cephalic phase , gastric phase and intestinal phase.Cephalic phase begins with secretion of gastric juices from gastric glands in response to sight and smell of food.It involves chewing and chemical breakdown of food by the action of digestive enzymes ,saliva in the mouth contain enzymes like lipase and amylase which are secreted by the salivary and serous glands present on the tongue.
Learn more about digestive tract,here:
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In the reaction A + B -> C + D, what are the products?
A. A and B
B. A, B, C, and D
C. C and D
D. A and C
Answer:
C
Explanation:
just took the test
Ammonification is the formation of
in which shell duplet rule is applied, why?
Answer:
In first shell duplet rule is applied because first shell contains maximum 2 electrons
Explanation:
A heat lamp heats a pot of water from below, heat is
transferred throughout the water in the pot, and a person puts
their hand into the water to warm it. Which of the following
types of heat transfer are occurring in this scenario?
a Conduction
b Radiation
C Convection
d All of the above
Answer:
i think it is D. All of the above
but i will check to see if it's right
Answer:
D all of the above
Explanation:
I got it right on my test
Question 3
When an electron absorbs energy and jumps it is:
a negative ion
in the ground state
a positive ion
in the excited state
Help please
Answer:
in the excited state
Explanation:
Because in excited state an atom has more energy
find the mass in 3.8 moles of magnesium chloride
Explanation:
34.31+35.45(2)=
27.31+70.90=
95.21g/mol
The number of protons and neutrons combined in an atom of a particular element
Why is no chemical reaction necessary to extract gold?
Explanation:
Because gold is a very unreactive metal and exists as a pure substance (instead of oxides).
You all should know that...
you guys are amazing
I just wanted you to know that
that's it
you can stop reading
why are you still reading?
I said that was it so why are you reading
stop reading
I said stop!
ok fine
well if your gonna keep reading you might as well hear this
jk im not writing anymore
that was all it was
JK AGAIN!
you are all...
wonderful
smart
beautiful (inside and out)
loved
and cared for
so don't go
you gotta be here
you gotta be here to spread your amazingness
because you are a queen/king
Answer:
Thank you I needed this
you are...
wonderful
smart
beautiful (inside and out)
loved
and cared for
so don't go
you gotta be here
you gotta be here to spread your amazingness
because you are a queen/king
YES YOU ARE and SO IS EVERYONE ELSE, I HOPE YALL ALL STAY SAFE AND HAVE A GREAT DAY >-<
The movement of an object toward earth Soley because of gravity is called
Answer:constant acceleration. A steady change in velocity.
Explanation:
Determine the change in energy when an electron transitions from n= to n=5?
Answer:
ΔE = 13.056 ev
Explanation:
Energy associated with nth state is,
En = -13.6/n²
For n = 1
E₁ = -13.6 / 1²
E₁ = -13.6/1
E₁ = -13.6 ev
Kinetic energy of electron = -E₁ = 13.6 ev
For n = 5
E₅ = -13.6 / 5²
E₅ = -13.6/25
E₅ = -0.544 ev
Kinetic energy of electron = -E₅ = 0.544 ev
Wavelength of radiation emitted:
ΔE = hc/λ = E₅ - E₁
by putting values,
ΔE = -0.544ev - (-13.6 ev )
ΔE = 13.056 ev
las diferencias fundamentales del entramado urbano antes y despues de 1750
Answer:?
?Explanation:
why is an atom electrically neutral
How do you convert a temperature from Celsius to kelvin?
Explanation:
by adding 273.15K to the given value of temperature in Celsius degree.
example:
20℃ to Kelvin
[tex]T(K)=20℃+273.15K \\
=293.15K [/tex]
Your mother gives you 250 mg of acetaminophen and a cup containing 500 ml of water. What is the concentration of the solution if you dissolve the Tylenol in the water?
Answer:
The concentration is 50%
Explanation:
Mass-Volume concentration is molarity (M) times 100% or [tex]\frac{Gsolute}{Lsoln}[/tex] * 100%
For this problem, we need to convert from milligrams to grams and milliliters to liters in order to plug the values into the equation and solve for the concentration.
So, 250 mg = 0.025g (there are 1000 mg in 1 g)
And 500ml = 0.05 L (there are 1000 ml in 1 L)
Now we can solve for the concentration
[tex]\frac{0.025 g}{0.05 L}[/tex] [tex]* 100[/tex] %= 0.5 [tex]* 100[/tex] % = 50% of Tylenol concentration
5. (03.01 LC)
Which of the following is matter in its liquid form?(2 points)
Animals
Plants
Rain
Sunlight
Answer:
rain
Explanation:
rain drops are water and water us a liquid
Define compound in your own words
Answer:
I think the compound is a chemical bound the compound o cant say I trying
Explanation:
oh the compound is a chemical substance like atoms like H2O and other atoms they have many compounds I think this should be ans
if its ans is too long you want then tell me in comment
a covalent compound that shares two pairs of electrons.
What is it?
This chart shows descriptions of the atoms for four different substances.
Which substance is a solid?
Object 1
Object 2
Object 3
Object 4
This is actually fun. First comment is brainliest.
Answer:
sup, how ya doin?
Explanation:
Geologists obtain indirect evidence about Earth’s interior by
a.
measuring pressure differences at Earth’s surface.
b.
estimating temperature inside earth.
c.
directly looking under the many layers.
d.
recording and studying seismic waves.
Answer:
I'm sure it's D.
Explanation:
They obtain evidences by recording and studying seismic waves.
How could sinking a ship to create an artificial reef address the problem?
A.
More divers would come to the area to explore both reefs.
B.
Many divers would go to the artificial reef instead of the natural reef.
C.
There would be more places for new species to enter the ecosystem.
D.
There would be fewer places for marine organisms to live.
Answer:
C. There would be more places for new species to enter the ecosystem.
Explanation:
The Shipwrecks established artificial reefs that address the problem of a natural reef.
The artificial reefs provide a stable growing area for corals, and habitat for fishes and new organisms along with food sources that is found in natural reefs. This helps to increase the growth of marine life.
Hence, the correct answer is "C. There would be more places for new species to enter the ecosystem."
The energy levels of an atom are occupied by
A.electrons
B.protons
C.neutrons
D.ions
Answer:
A: electrons
Explanation:
How many atoms of Hydrogen are in the 3 molecules of glucose?
3C6H12O6?
Answer:
36 hydrogen atoms in 3 molecules of glucose
Explanation:
The formula for one molecule of glucose is C₆H₁₂O₆
There are 12 hydrogen atoms in one molecule so in three molecules there would be 36
Which of the following is an element?
A
MgBr
B
HCl
C
O
D
Cu(SO4)3
Oxygen is a chemical element with symbol O and atomic number 8. Classified as a nonmetal, Oxygen is a gas at room temperature.
Is it a model answer key
Answer:
is what a model answer key
I am going to go with yes. Imao
If an atom has a mass number of 52 and has 28 neutrons, what is the atomic number?
Answer:
24
Explanation:
52-28=24
A student measures the time it takes for two reactions to be completed.
Reaction A is completed in 12 seconds, and reaction B is completed in 21
seconds. What can you conclude about the rates of these reactions?
A. The rates of reactions A and B are equal.
B. The rate of reaction A is lower.
C. The rate of reaction B is lower.
Answer:
c
Explanation:
because the left side of reactant is take more time to make a product than the first
The rate of these reactions should be considered as the option b. The rate of reaction A is lower.
Conclusion of the rate of reactions:Since Reaction A is completed in 12 seconds, and reaction B is completed in 21 seconds.
So based on this, we can say that the rate of reaction A should be lower as it contain 12 seconds as compared to reaction b.
hence, the option b is correct.
Learn more about reaction here: https://brainly.com/question/4241156