Can somebody that is good at science help me with these two questions? Please and thank you!
Electromagnetic radiation at its maximum wavelength is _____.
A. Radio waves
B. Infrared
C. X rays
D. None of the above
Answer:
Option A) Radio waves.
Explanation:
Have a great day.
Please answer correctly !!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!
What is the difference between elements and compounds? *
Use what you know about endothermic and exothermic reactions to explain the differences in the graphs above
Answer:
yes I do
But I can't see the question very well
Explanation:
If you have 23mg of water, at what temperature will it Boil?
Answer:
i believe it is in the 200
Explanation:
WHATS THE DIFFERENCE BETWEEN MASS AND WEIGHT WELPPPPP
Answer:
Mass is amount of matter. Weight is how that matter is affected by gravity.
Explanation:
At STP, 1 liter of O (g) and 1 liter of Ne(g) have the same (1) Mass (2) Density (3) Number of molecules (4) Number of atoms I
How many more valence electrons does this atom need to fulfill the Octet
Rule?
Answer:
In the valence shell, it should have 8 valence electrons.
Explanation:
Convert 27 degrees Celsius to Kelvin
OOK
300 K
O 27K
327 K
Answer:
300 K
Explanation:
add 273 to change to kelvin
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What are two reasons that someone would want to become a scientist?
1 point
Your answer
*WILL GIVE A BRAINIEST & 15 POINTS TO THE CORRECT ANSWER*
When an electron falls back to its original shell, the electron will...
A.) absorb energy as it goes to the excited state
B.) absorb energy as it goes to the ground state
C.) release energy as it goes to the excited state
D.) release energy as it goes to the ground state
Answer: D
Explanation:
In if the reaction below 49 grams of Fe3O4 produces a 78.25% yield of Fe. How many grams are produced? Fe3O4 + 4H2 = 3Fe + 4H2O
Imagine the = is an arrow
Fe produced : 27.53 g
Further explanationReaction
Fe₃O₄ + 4H₂ = 3Fe + 4H₂O
mol Fe₃O₄ (MW=233.55 g/mol) :
[tex]\tt \dfrac{49}{233.55 g/mol}=0.21[/tex]
mol ratio Fe₃O₄ : Fe = 1 : 3, so mol Fe :
[tex]\tt 3\times 0.21=0.63~g/mol[/tex]
mass Fe(Ar=55,845 g/mol)
[tex]\tt 0.63\times 55,845=35.18~g[/tex]
grams produced :
[tex]\tt \%yield=\dfrac{actual}{theoretical}\times 100\%\\\\actual=\%yield\times theoretical\\\\actual=78.25\%\times 35.18\\\\actual=27.53~g[/tex]
Which is larger potassium or bromine
Answer:
potassium.
Explanation:
located at start of period 3, will have larger radius
Answer:
bromine
Explanation:
A radio station transmits to a receiving antenna. The radio wave sent is a
a.
surface wave
b.
torsional wave
c.
longitudinal wave
d.
transverse wave
longitudinal
all sound waves are longitudinal
Above which temperature does the thermal conductivity of water start to fall?
Answer:
It’s actually 130 degrees Celsius.
Explanation:
Help!!!!!!!!!!!!!!!!!!
The density of the sample : 0.827 g/L
Further explanationIn general, the gas equation can be written
[tex]\large {\boxed {\bold {PV = nRT}}}[/tex]
where
P = pressure, atm , N/m²
V = volume, liter
n = number of moles
R = gas constant = 0.082 l.atm / mol K (P= atm, v= liter),or 8,314 J/mol K (P=Pa or N/m2, v= m³)
T = temperature, Kelvin
n= 1 mol
MW Neon = 20,1797 g/mol
mass of Neon :
[tex]\tt mass=mol\times MW\\\\mass=1\times 20,1797 =20.1797~g[/tex]
The density of the sample :
[tex]\tt \rho=\dfrac{m}{V}\\\\\rho=\dfrac{20,1797}{24.4}=0.827~g/L[/tex]
or We can use the ideal gas formula ta find density :
[tex]\tt \rho=\dfrac{P\times MW}{RT}\\\\\rho=\dfrac{1\times 20.1797}{0.082\times 298}\\\\\rho=0.826~g/L[/tex]
21 III
Choose the geologic formation that fits the description: rocks are stretched, moved
vertically into blocks, and dropped; the lower blocks are called graben and the taller
blocks called horst.
O volcanic mountains
O ocean ridges
O fault block mountains
folded mountains
Answer:
Lifted fault block mountains
Explanation:
Girls are usually completely physically mature by _____ years old.
A.
17
B.
19
C.
14
D.
21
Please select the best answer from the choices provided. Anyone know for EDGE
A
B
C
D
Answer:
a 17 bc it is how it works
Girls are usually completely physically mature by 18 years old.
What is puberty ?Puberty refers to the physical transformation of a child's body into an adult one capable of fertile reproduction.
In girls puberty generally attains before two years earlier than the boys. And the exact age of the girls to attain puberty is in between the age of 10 to 14.
Hence the age of girls to attain puberty is 14.
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It takes much less energy to change the temperature of oil than it does to change the temperature of water
Answer:
i think so
Explanation:
Fill in the blanks using terms from this unit.
Even though plants are rooted in the ground, they still move, exert
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choose your answer...
and do
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choose your answer...
.
Plant cells have very strong cell walls that allow
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choose your answer...
to build up inside of the cell as water is absorbed. This pressure is called
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choose your answer...
.
When turgor pressure is high enough in a cell, the cell walls become
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choose your answer...
and As a result, the cell becomes rigid and the plant is able to stand
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choose your answer...
and straight. When a plant does not get enough water, the turgor pressure inside of the cells
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choose your answer...
.
A decrease in pushing against the cell wall causes the cells to lose their
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choose your answer...
and This causes the plant to begin to droop, or
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choose your answer...
.
When the wilted plant gets enough water, the cells will become rigid again, and the plant will stand firm and straight once again.
Answer:
Even though plants are rooted in the ground, they still move, exert force, and do work.
Plant cells have very strong cell walls that allow pressure to build up inside of the cell as water is absorbed. This pressure is called turgor.
When turgor pressure is high enough in a cell, the cell walls become firm and as a result, the cell becomes rigid and the plant is able to stand tall and straight.
When a plant does not get enough water, the turgor pressure inside of the cells decreases. A decrease in pressure pushing against the cell wall causes the cells to lose their shape and shrink. This causes the plant to begin to droop or wilt.
When the wilted plant gets enough water, the cells will become rigid again, and the plant will stand firm and straight once again.
Explanation:
Isomers are molecules with the same molecular formula, but different structural formulae.
How many isomers are there in C7H16?
A.6
B.7
C.8
D.9
Answer:
D 9 is the answer
Explanation:
Hope it helps you
Please mark as brainliest answerin which group on the periodic table does the atom pictures belong?
a) 4
b) 6
c) 16
d) 14
Answer: Group 14
Explanation:
It's a carbon atom with 4 valance electrons.
What goes in photosynthesis and what comes out of photosynthesis?
Answer:
Carbon dioxide goes in and oxogen comes out
P.S. Sunlight needed for this process to work
Explanation:
What are three physical properties that could be used to identify gold?
Answer:
solid ,hard, not see through
Explanation:
Answer:
There are many properties out there, so three include bright yellow color, luster shine, and the maleability that determines the durability.
Similarities between sliding and fluid friction
What is the correct name for the following compound? "Make sure you are using correct naming
rules"
Answer:
c
Good luck on your assessment!
define the term osmosis in your OWN words
Answer:
Osmosis is a process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one equalizing the concentrations on each side of the membrane.
Explanation:
Which of the following does NOT agree with the Law of Conservation of Mass?
A. Mass can be destroyed.
B. Matter cannot be created.
C. Mass prior to chemical change is the same as mass after chemical change.
mass prior to chemival change is. thesame as mass after chemical change
This reaction type occurs when different atoms in two different compounds trade places.
A) synthesis
B) decomposition
C) double replacement
D) single replacement
Double replacement is the reaction that typically occurs when different atoms in two different compounds trade places (Option C).
What is double-replacement?Double-replacement is a class of chemical reaction where two atoms can exchange their places to generate new combinations.
This type of chemical reaction (double-replacement reaction) is very common in nature.In conclusion, double replacement is the reaction that typically occurs when different atoms in two different compounds trade places (Option C).
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