How many moles are in 2.43 x 1024 particles of Carbon Monoxide (CO)?
a.0.25 moles
b.4.04 moles
c.1.46 moles
d.2.53 moles
Answers
(2.43*10^24)*1/(6.022*10^23)
Related Questions
Which one has more Thermal Energy? A cup of boiling water or a bathtub of warm water? Explain! Please answer if you can, thank you!! P.S this is science but i just put it as chemistry?
Answers
Answer:
See explanation
Explanation:
The thermal energy of a substance is affected both by its mass and by its temperature. Thermal energy is defined as the total kinetic energy of all particles in an object.
Even though the cup of water has a higher temperature, the bathtub has more thermal energy because it contains much more mass of water compared to the cup. It will release more thermal energy to the surroundings compared to the cup of boiling water.
The bathtub of warm water has a higher total thermal energy due to its bigger volume, but the cup of boiling water has a higher average kinetic energy per particle.
The thermal energy of a cup of boiling water is greater than that of a warm bathtub. The sum of all the kinetic energies of the particles in a substance is its thermal energy. The temperature of boiling water is higher than that of warm bathwater. The average kinetic energy of the particles is measured by temperature. The average kinetic energy of the particles in a cup of boiling water would be higher than that of the warm water in a bathtub, which is normally between 38 and 45 degrees Celsius (100 and 113 degrees Fahrenheit), because water has a boiling temperature of 100 degrees Celsius (212 degrees Fahrenheit).
To know more about thermal energy, here:
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The atoms in SBro6 are most likely being held together by what type of bond?
A. O metallic bonds
B.
ionic bonds
c. O polar covalent bonds
D
covalent bonds
Answers
Answer:
b
Explanation:im not really sure sorry if its wrong
Why is oxygen spelt o2
Answers
Answer:
it's a diatomic molecule–which is why it is O₂.
Explanation:
Diatomic molecules are molecules composed of only two atoms, of the same or different chemical elements. Only a handful of elements on the periodic table are diatomic such as nitrogen, hydrogen, fluorine, chlorine, bromine, and iodine.
23) The function of an organelle is related to its
A. system.
B. structure.
C. blood cell.
D. job.
Help plzzz
Answers
Answer:
Well, it could be B or D but I would say B.
Explanation:
The structure of an organelle is usually fit to its function so it is most likely B.
Hope this helps!
Part A Read each sentence. Write the letter of the correct answer on the line.
1. Which of the following would result in a chemical change?
A boiling water
C tearing paper
B burning wood
D melting wax
Answers
If an element has 11 protons and 11 neutrons in its nucleus it must be ?
Answers
Answer:
the answer is 11
Explanation:
Ok, let us understand what is an atomic number, an atomic number is simply the proton number, the atomic number is always seen at the bottom left corner in a element of a periodic table, it is the number of proton in a atom of a certain element.
What is it called when a rock is broken down into smaller pieces by ice, glacier or water ? Chemical weathering, physical weathering, deposition, pollution
Answers
Answer:
deposition I hope this helps!!
Explanation:
Answer:physical weathering
Explanation:
The law of unbalanced forces is also known as? :
Answers
Answer:
Newton's 2nd Law
Explanation:
Newton's Second Law of Motion is concerned with the effect that unbalanced forces have on motion.
Law of unbalanced forces is also know as Newton's 2nd Law
The chemical formula for the ionic compound aluminum sulfite is Al2(SO3)3. Explain why there are 2 cations for every 3 anions in this compound.
Answers
my mom !!!Explanation:
Musscle man
why does no one love me? when will i feel appreciated?
Answers
Answer:
I appreciate you- owo... and people do love you. uwu. even tho I am a stranger I love you :D. ❤
You're the best person anyone could ever ask for. Trust me you're enough <3
A sample of gas occupies a volume of 598.9 mL and has a pressure of 675.6 torr. What will the pressure of the sample of gas be if the volume is decreased to 235 mL? Be sure to include units with your answer.
Answers
Answer:
1721.77 torrExplanation:
The new pressure can be found by using the formula for Boyle's law which is
[tex]P_1V_1 = P_2V_2[/tex]
Since we are finding the new pressure
[tex]P_2 = \frac{P_1V_1}{V_2} \\[/tex]
From the question we have
[tex]P_2 = \frac{598.9 \times 675.6}{235} = \frac{404616.84}{235} \\ = 1721.773787...[/tex]
We have the final answer as
1721.77 torrHope this helps you
if you drop soap on the floor is the soap dirty or is the floor clean?
Answers
Answer:
hahahaha the soappp is dirty and the floor gets clean
How can you increase the momentum of an object?
(a) by decreasing its velocity
(b) by increasing its friction
(c) by increasing its mass
(d) by decreasing its acceleration
Answers
Answer:
(c) by increasing it's mass
Answer:
(C) by increasing its mass
Explanation: Mass and velocity are both directly proportional to the momentum. If you increase either mass or velocity, the momentum of the object increases proportionally. If you double the mass or velocity you double the momentum.
1. The heat absorbed when ice melts can
be measured in a unit called a
(1) torr
(2) degree
(3) mole
(4) joule
Answers
Answer:
joule
Explanation:
Which formula represents an ionic bond? 1 NaCl 2 N2O 3 HCl 4 H2O
Answers
Answer:
1 NaCl
Explanation:
NaCl is sodium chloride, and sodium chloride is an ionic compound because it's held together with ionic bonds.What do you think caused this land formation ?
Answers
(02.03 LC)
What term is used to describe the lowest energy level of a particle? (5 points)
Answers
Explanation:
Answer and Explanation: Photon is the basic unit of light. The excited state refers to the state when any specified electron gained some energy from surrounding. In the ground state, the electron carries no energy and this refers to its lowest energy level.
What part of the atom tells you what element it is?
Number of electrons
Number of Photons (the light particle)
Number of Neutrons
Number of Protons
Answers
Answer: I believe it is the number of protons.
A photon has a wavelength of 299 nm. What is the frequency of this photon?
1. 1×10^16 Hz
2. 1×10^15 Hz
3. 6.65 × 10^−37 Hz
4. 6.65 × 10^−28 Hz
5. 0.00100 Hz
6. 1.98 × 10^−31 Hz
7. 8.97 × 10^10 Hz
8. 1×10^6 Hz
9. 6.65 × 10^−18 Hz
Answers
The frequency(f) of this photon : 1 x 10¹⁵ Hz
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
f = c / λ
c = speed of light
= 3.10⁸
λ = wavelength
A photon has a wavelength of 299 nm.
λ = 299 nm = 299 x 10⁻⁹ m = 2.99 x 10⁻⁷ m
The frequency :
[tex]\tt f=\dfrac{3.10^8}{2.99\times 10^{-7}}\\\\f=\boxed{\bold{1\times 10^{15}~Hz}}[/tex]
A glass of fresh milk with 4% fat is an example of *
4 points
a heterogeneous mixture.
an element.
a homogeneous mixture.
a compound.
Answers
Answer:
heterogeneous
Explanation:
composition is not uniform through out
All of the alkaline earth metals are similar in that – they are all artificially made elements they all have similar atomic weights. they all have the same ionic charge. they all show variable valences.
Answers
Answer:
they all have the same ionic charge.
Explanation:
Alkaline earth metals are group 2 metals on the periodic table. They are divalent elements because they have two valence electrons and ionize by donating these two valence electrons. Elements in this group have the same numbers of electrons in their outermost shell of their atoms. i.e. they all have the same number of valence electrons and ionic charge.
A 50 gram sample of radioisotope undergoes 2 half lives. How many grams would remain at the end?
Answers
Answer:
you would need to multiply 50 times 2 wich is 100 so i beleive its 100
Explanation:
the density of seawater is ____ fresh water?
Answers
Answer:
Since salt ions are heavier than water molecules, seawater is denser than freshwater. The density of seawater ranges from 1020 to 1030 kg/m 3 while the density of freshwater is about 1000 kg/m 3. Variations in salinity also cause the freezing point of seawater to be somewhat lower than that of freshwater.
Explanation:
Elements that readily lose electrons tend to have
A) high ionization energy and high electronegativity
B) high ionization energy and low electronegativity
C) low ionization energy and low electronegativity
D) low ionization energy and high electronegativity
Answers
Answer:
C) low ionization energy and low electronegativity
Explanation:
Which of the following are soluble in water? Select all that apply.
K2SO4
CaCl2
LiOH
Answers
I think it is
K2SO4?
Answer:
1 And 2 are soluble in water
What patterns do you observe in the data?
Answers
Explanation:
What type of graph is most appropriate to present the data in Table 4? Create a graph of the data in Excel or another graphing software and submit it to your instructor.
Develop a detailed hypothesis for your experiment.What would your experimental approach be to test this hypothesis? Be detailed in your description of the experiment.
6.What are the independent, dependent, and controlled variables in your experiment?
What type of graph would be appropriate for this data set? Why?
Maggie is sitting at a table wit Fred and Florence.Maggie has 10 markers but Fred and Florence each have only 7 markers.how can they share markers so each has 8
Answers
Answer:
Give them each one so all of you is 8
Explanation:
I hope it helps:)
Fred and Florence have a combined total of 14 markers. Meaning, the amount of markers between all three is 24. If Maggie gives one marker to Fred and one marker to Florence, then each of them will have 8 markers.
The chemical formula for zinc sulfate
Answers
Answer:
ZnSO4
Explanation:
There
Which element has a mass number of 32?
a. argon ion
b. silicon ion
C. silicon
d. sulfur
Answers
_Se2 → _Se3
A.2,2
B.1,2
C.3,2
D.2,3
Answers
Answer:
C. 3,2
Explanation:
these coefficients balance out the equation.