O energy flowing from the
krill to the blue whale
What is the form of energy that the blue whale consumes when it eats the point
krill that helps it survive?
thermal
radiant
Chemical
Answer:
thermal
Explanation:
Find the mass of 1.25 moles Ca(OH)2.
According to the mole concept, the mass of 1.25 moles Ca(OH)₂ is 92.61 grams.
What is a mole?Mole is defined as the unit of amount of substance . It is the quantity measure of amount of substance of how many elementary particles are present in a given substance.
It is defined as exactly 6.022×10²³ elementary entities. The elementary entity can be a molecule, atom ion depending on the type of substance. Amount of elementary entities in a mole is called as Avogadro's number.
It is widely used in chemistry as a suitable way for expressing amounts of reactants and products.For the practical purposes, mass of one mole of compound in grams is approximately equal to mass of one molecule of compound measured in Daltons. Molar mass has units of gram per mole . In case of molecules, where molar mass in grams present in one mole of atoms is its atomic mass.Mass=number of moles×molar mass=1.25×74.09=92.61 g.
Thus,the mass of 1.25 moles Ca(OH)₂ is 92.61 grams.
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How many atoms are in 70.00 grams of oxygen.
Question 2 options:
2.635 x 1024 molecules O
2.635 x 1024 atoms O
6.744 x 10 23 atoms O
6.744 x 1026 atoms O
Answer:
A. is the correct choice.
Explanation:
If there are 70.00 g of Oxygen then it would be molecules, in which there is only 1 option with molecules.
I am NOT professional. There is a chance I am wrong. Please reply to me if I made a mistake.
Answer:
Explanation:How many atoms are in 70.00 grams of oxygen.
HELP ASAP pls will give brainlist
Answer:
Fe ^2+ + MnO - 4 → Fe 3+ + Mn 2+
Explanation:
Explanation:
You follow a series of steps in order:
Identify the oxidation number of every atom.
Determine the change in oxidation number for each atom that changes.
Make the total increase in oxidation number equal to the total decrease in oxidation number.
Place these numbers as coefficients in front of the formulas containing those atoms.
Balance all remaining atoms other than
O
and
H
.
Balance
O
.
Balance
H
.
Check that atoms and charges balance.
Here's how it works. Your unbalanced equation is
Pls do it I don’t understand
Wich meteor shower can be seen December 28-january 12
A Geminids
B Leonids
C Perseids
D Quadrantids
this is for astronomy
Answer:
A Geminids
Explanation:
Convert 380 mmHg to atm.
Answer:
50662.5
Explanation:
Which object has a tail when it passes near the Sun?
A. Comet
B. Meteor
C. Moon
D. Asteroid
Answer:
A. Comet
Explanation:
Comet is a object which has a tail when it passes near the Sun.
What is a comet?A comet is an icy, small Solar System body that warms and begins to release gases when passing close to the Sun, a process called outgassing. This produces an extended, gravitationally unbound atmosphere or coma surrounding the nucleus, and sometimes a tail of gas and dust gas blown out from the coma.
These phenomena are due to the effects of solar radiation and the outstreaming solar wind plasma acting upon the nucleus of the comet. Comet nuclei range from a few hundred meters to tens of kilometers across and are composed of loose collections of ice, dust, and small rocky particles. The coma may be up to 15 times Earth's diameter, while the tail may stretch beyond one astronomical unit.
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PLS HELP I WILL GIVE BRAINLIST.
Mercury has a density of 13.6 g/cm³. Which of these materials will float in mercury? Check all that apply.
iron, density: 7.8 g/cm³
aluminum, density: 2.7 g/cm³
silver, density: 10.5 g/cm³
gold, density: 19.3 g/cm³
uranium, density: 18.7 g/cm³
lead, density: 11.3 g/cm³
Answer:gold iron and uranium
Explanation:
Answer:
iron, density: 7.8 g/cm³
aluminum, density: 2.7 g/cm³
silver, density: 10.5 g/cm³
lead, density: 11.3 g/cm³
Explanation:
other ones wrong
This is for my wonderful boy friend Putting my defenses up
'Cause I don't wanna fall in love
If I ever did that, I think I'd have a heart attack
Never put my love out on the line
Never said "Yes" to the right guy
Never had trouble getting what I want
But when it comes to you, I'm never good enough
When I don't care, I can play 'em like a Ken doll
Won't wash my hair, then make 'em bounce like a basketball
But you make me wanna act like a girl
Paint my nails and wear high heels, yes, you
Make me so nervous that I just can't hold your hand
You make me glow
But I cover up, won't let it show
So I'm putting my defenses up
'Cause I don't wanna fall in love
If I ever did that, I think I'd have a heart attack
I think I'd have a heart attack
I think I'd have a heart attack
Never break a sweat for the other guys
When you come around, I get paralyzed
And every time I try to be myself
It comes out wrong like a cry for help
It's just not fair; pain's more trouble than love is worth
I gasp for air; it feels so good, but you know it hurts
But you make me wanna act like a girl
Paint my nails and wear perfume for you
Make me so nervous that I just can't hold your hand
You make me glow
But I cover up, won't let it show
So I'm putting my defenses up
'Cause I don't wanna fall in love
If I ever did that, I think I'd have a heart attack
I think I'd have a heart attack
I think I'd have a heart attack
The feelings got lost in my lungs
They're burning I'd rather be numb
And there's no one else to blame
So scared I take off, and I run
I'm flying too close to the sun
And I burst into fla-fla-flames
You make me glow
But I cover up, won't let it show
So I'm putting my defenses up
'Cause I don't wanna fall in love
If I ever did that, I think I'd have a heart attack
I think I'd have a heart attack (Heart attack)
I think I'd have a heart attack
I think I'd have a heart attack
I think I'd have a heart attack
Answer:
oh thats a bomb song tho i love
Answer: Christina your killing me pls come back i screwed everything up with everyone pls
Explanation: pls
ok so i haven't been on this in a long time ig and so i don't know i just need help on this so i can play my fav video game oof
A hockey puck was sliding across the ice at a constant speed when it was hit with a hockey stick.
Which changes could result from the application of force from the hockey stick?
No change will occur because the forces are balanced.
The hockey stick will experience balanced forces when it comes in contact with the puck.
The new force will add to the existing unbalanced forces of the sliding hockey puck.
There will be a change of direction and/or speed from the unbalanced forces.
Answer:
J
Explanation:
its J
student A is pulling 57 newtons and student B is pushing at 96 newtons. What is the net force?
Answer:
153 N left
Hope this helps
Explanation:
What is the overall reaction equation
Answer:
If m or n is zero, the reaction is zero order in A or B, respectively, and the rate of the reaction is not affected by the concentration of that reactant. The overall reaction order is the sum of the orders with respect to each reactant. If m = 1 and n = 1, the overall order of the reaction is second order
(m + n = 1 + 1 = 2).
Explanation:
Distance=100 meters
Time=33.2 seconds
Speed=
pls help
Answer:
3.01
Explanation:
Speed=distance/time
=100mtrs/33.2sec
=3.01m/s
in multicellular organisms groups of cells that work together are called:______.
Answer:
In multicellular organisms groups of cells that work together are called tissues.
Pluto has a diameter of 2 300 km.
How does this information suggest to scientists that Pluto is not a planet
Explanation:
it is too small to be a planet as the avrage planet size
can be around 20,000 the smallest planet in the solar system mercurey has more than pluto
what does aqueous mean
of or containing water, typically as a solvent or medium.
"an aqueous solution of potassium permanganate"
like water; watery.
"a great hall of aqueous marble"
which statement describes the movement of carbon dioxide in the carbon cycle?
How does salinity vary with freezing and melting?
Question 3 options:
Freezing increases salinity, while melting decreases salinity.
Both freezing and melting decrease salinity.
Freezing decreases salinity, while melting increases salinity.
Both freezing and melting increase salinity.
Answer:
For every 5 psu increase in salinity, the freezing point decreases by 0.28 degrees Celsius (0.5 degrees Fahrenheit); thus, in polar regions with an ocean salinity of about 32 psu, the water begins to freeze at -1.8 degrees Celsius (28.8 degrees Fahrenheit).
Explanation:
Freezing increases salinity, while melting decreases salinity.
took the test lol
write your idea on the saying."we are what we eat"
Explanation:
A way to maintain good health is from exercise, eating healthy foods, getting enough rest, keeping .The first mention of the phrase 'you are what you eat' came from the 1826 work Physiologie du Gout, ou Medetations de Gastronomie Transcendante, in which French author Anthelme Brillat-Savarin wrote: “Tell me what you eat and I will tell you what your are.”
_is a change in direction or speed
-velocity
-force
-deceleration
-mass
-acceleration
how many significant figures are needed in the answer when 1.31m is multiplied by 6.5 m
Answer:
two
Explanation:
The number of significant figures needed in the answer is 2.
This is because when finding the products of two numbers, the result is as accurate as the least number of significant figures of the numbers being multiplied.
Here the numbers being multiplied are;
1.31m
6.5m
1.31m has 3 significant figures
6.5m has 2 significant figures.
So, the product will have 2 significant figures
16. Why do the atoms of H, O, N, F, CI, I, and Br have tendencies to bond with themselves?
If more solvent is added to a solution:
A.the solution becomes less dilute
B.the molarity decreases
C.the molality increases
D.the percent (v/v) increases
Answer:
The answer would be A
Explanation:
If more solvent is added, the solution becomes unsaturated because in principle it is capable of dissolving more solute.
If on December 1st there is a new moon, when will the next new moon be approximately?
December 14th
December 5th
January 5th
December 29th
C3H8 + 5O2 → 3CO2+ 4H2O, if 5.75L of oxygen are consumed in the above reaction, how many L of carbon dioxide are produced?
Answer: 3.45 L carbon dioxide are produced
Explanation:
According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number [tex]6.023\times 10^{23}[/tex] of particles.
To calculate the moles, we use the equation:
[tex]\text{Number of moles}=\frac{\text{Given volume}}{\text {Molar volume}}=\frac{5.75L}{22.4L}=0.257moles[/tex]
[tex]C_3H_8+5O_2(g)\rightarrow 3CO_2+4H_2O[/tex]
According to stoichiometry :
5 moles of [tex]O_2[/tex] produce = 3 moles of [tex]CO_2[/tex]
Thus 0.257 moles of [tex]O_2[/tex] will produce=[tex]\frac{3}{5}\times 0.257=0.154moles[/tex] of [tex]CO_2[/tex]
Volume of [tex]CO_2=moles\times {\text {Molar volume}}=0.154moles\times 22.4L/mol=3.45[/tex]
Thus 3.45 L carbon dioxide are produced
Convert 2.44 grams of CO2 to molecules.
Answer:
0.055
Explanation:
Not 100% sure this is right but this is how I got it:
1 mol * 2.44 grams/44.0095 g/mol (44.0095 is one mole of CO2)
A sample of gas at 2.00 atm has a temperature of 60. °C. What will its temperature be at 6.50 atm
Answer:
https://quizlet.com/259730102/chemistry-unit-10-flash-cards/
Explanation:
Chemical reaction type
Al2(co3) al2o3 +
Type of reaction : The decomposition reaction
Further explanationGiven
Reaction
Al₂(CO₃)₃ → Al₂O₃ + 3CO₂
Required
Type of reaction
Solution
The decomposition reaction in a chemical reaction shows the decomposition reaction of a compound into its constituent elements or compounds
So 1 compound breaks down into 2 or more compounds
The general formula :
AB ⇒ A + B
helppppppppppppppppppppp
Answer:
Formation of sedimentary rocks
Explanation:
I believe this is correct, May I get a brainliest???