Answer:
The answer is 1.33 molesExplanation:
To find the number of moles in a substance given it's number of entities we use the formula
[tex]n = \frac{N}{L} \\ [/tex]
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
[tex]n = \frac{8.03 \times {10}^{23} }{6.02 \times {10}^{23} } \\ = 1.33388704...[/tex]
We have the final answer as
1.33 molesHope this helps you
A block weighing 13.15 grams has sides of 11.5 cm, 5.75 cm, and 8.44 cm. What is the density of the block in g/cm?
0.519 g/cm3
0.0236 g/cm3
42.4 g/cm
1.95 g/cm
Answer:
B. or .0236
Explanation:
Multiply the 3 sides to get 558.095, then divide the mass and volume to get .0236
A glass of milk occupies a volume of 50.0 mL and has a mass of 52.0. what is its density
Answer: 1.04 is the density. Explanation: Just like a solid, the density of a liquid equals the mass of the liquid divided by its volume; D = m/v. 52.0/50.0=
Wich statement best describes the progress of science
Answer:
Scientific ideas are changed when better ones are found.
Explanation:
Can someone check if I did this right pls
Answer:
It's right
Explanation:
Alien Periodic Table
Answer:
IT IS REAL
Look it up
Answer:
look close the answers are circled in blue
the answer to number 2 is element #14, Yorkel
(GIVING BRAINLIEST)
Balance each of the following chemical equations below
Explanation:
A.
AgNO₃ + KCl → AgCl + KNO₃ (Already Balanced)
B.
H₂O + SO₃ → H₂SO₄ (Already balanced)
C.
2KI + Cl₂ → 2KCl + I₂
D.
2NaHCO₃ → Na₂CO₃ + H₂O + CO₂
E.
Zn + 2HCl → ZnCl₂ + H₂
F.
BaCl₂ + Na₂SO₄ → BaSO₄ + 2NaCl
G.
C₃H₈ + 5O₂ → 3CO₂ + 4H₂O
H.
2Al + 3CuCl₂ → 2AlCl₃ + 3Cu
2) A student was working on an investigation to measure the relative activity
of an enzyme at various pH values. He collected the following data:
pH 2, enzyme activity 10; pH 8, enzyme activity 50;
pH 12, enzyme activity 10; pH 4, enzyme activity 20;
pH 6, enzyme activity 40; pH 10, enzyme activity 40
Answer:
THE LAST ONE
Explanation:
What is the freezing point on this graph?
Answer:
Point a becuse it is the closest to -5*
Explanation:
Answer:
-5
Explanation:
Negative numbers get you confused.
- = Negative
5 = Number
You know 5 right?
I I I I I - 5
5 is a really less number already.
If you add a negative it will be double small.
Now lets figure out the problem:
What is the freezing point on this graph?
-5 is the smallest number
5 is bigger than -5
15 is bigger than 5 and -5
25 is bigger than all the numbers.
I know what your thinking. 25 is totally not the answer. Its the biggest number. Freezing is a very low number. What number is the lowest out of -5, 5, 15, 25. You see -5.
Therefore, -5 is freezing.
place the items in order from highest to lowest degree of internal organization.
tissue
organ system
organ
cell
Put them in order please PLEASE
Answer:
I hope this helps! Can I have Brainliest plz :)
Explanation:
How much does a sample of C6H12O6 weigh if it contains 1.7 x 10^28 hydrogen atoms?
Answer:
Explanation:
Glucose has 6 number of carbon atoms, 12 atoms of oxygen and 6 atoms of oxygen
The total number of glucose atom is 24 atoms
The atom of hydrogen is twice that of carbon
that is (6.02 x10^22) x2=1.204 x10^23atoms
the number of moles of hydrogen is solved as follows
1mole = 6.02x10^23 atoms what about 1.204 x10^23=
{(1.204x10^23)/(6.02 x10^23)}=0.2moles
The moles of glucose
1 atom of glucose= 6.02 x10^22 x4 =2.408 x10^23 atoms
moles= { (2.48 x10^23)/(6.02 x10^23)}=0.41moles
Hope this helped :)
WHAT MAKES ELECTRONS JUMP TO OTHER ORBITS AROUND THE NUCLEUS THEN FALL AGAIN
Answer:
Explanation:
Electrons absorb energy in photons. This makes the eclectron excited. An electron in an excited state can release energy and fall to a lower orbit
Plz help or I get a zero!!!!!
Name the order of the planets from closest to the sun to farthest.
Sun, _________________, _________________, _________________, _________________,
_________________, _________________, _________________, _________________, Pluto
7. Name the inner planets.
Circle the correct term for inner planets: terrestrial (rocky) or gaseous
8. Name the outer planets.
Circle the correct term for outer planets: terrestrial (rocky) or gaseous
Answer:
Order: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
Inner Planets: Mercury, Venus, Earth, Mars
Outer Planets: Jupiter, Saturn, Uranus, Neptune
Explanation:
.
I WILL GIVE U BRAINLIEST IF U HELP ME!!!!!
Answer:
your awnser is B cutting back
Question 4 (4 points)
Special bonds formed because of electrostatic interaction between molecules are called
A.intermolecular forces
B. intramolecular forces
C.permanent forces
D.magnetic forces
Answer:
A. intermolecular forces.
An object is either copper or brass. The density of copper is 8.96g/ml. The density of brass is 8.73g/mL. I find that my object is 10.08
and has a volume of 1.15mL. What is my object made of?
Your answer:
O Copper
O Brass
O Cannot tell from the information given
Which pair of atoms are isotopes of each other?
a
oxygen-16 and oxygen-18
carbon-14 and nitrogen-14
iodine-131 and iodine-131
e
d
radium-222 and radon-222
Answer:
b sorry if im wrong
Explanation:
hope it helped
On July 8th, I will be 8.51472x108 seconds old. How old will I be in years? (Assume 365 days in a year.)
step by step
Answer:
You will be 27 years old (✿◠‿◠)
Which element has four times as many protons in its nucleus than are found in Neon?
Answer:
Zirconium, Zr, 40
Explanation:
Protons can be found by looking at the atomic number. Neon's atomic number is 10, so just multiply 10 by 4 and you get 40.
Which sublevel comes after 4d orbital
Answer:
5s
Explanation:
The 4d sublevel is filled next, after the 5s sublevel.
What is the main point of mutation ?
quick please !!
Answer: type of mutation that causes the replacement of a single base nucleotide with another nucleotide of the genetic material, DNA or RNA. The term point mutation also includes insertions or deletions of a single base pair.
Explanation:
Answer:
Mutation is important as the first step of evolution because it creates a new DNA sequence for a particular gene, creating a new allele.
Explanation:
Mutations put new DNA combinations into a population
Which of the following d shell configurations is likely to be the best magnet?
Answer:
D10 is answer
Explanation:
Magnetism can result from unpaired electrons in a given ion of an element, depending on the spin states of the electrons and d10 is fully filled
The d 10 is the d shell configurations which is most likely to be the best magnet.
What are configurations?Configurations are defined as the way that parts are joined together to form the computer system. The arrangement of electrons scattered throughout the orbital shells and subshells is depicted by the electron configuration of an atom. Divide the periodic table into pieces to represent the atomic orbitals, the areas where electrons are stored, in order to determine an electron configuration. The s-block is represented by groups one and two, the d-block by groups three through twelve, the p-block by groups thirteen to eighteen, and the f-block by the bottom two rows.
Depending on the spin states of the electrons and whether or not d10 is completely filled, magnetism can emerge from unpaired electrons in a specific ion of an element.
Thus, the d 10 is the d shell configurations which is most likely to be the best magnet.
To learn more about configurations, refer to the link below:
https://brainly.com/question/13410673
#SPJ2
How can we gather more evidence about weather lava or water formed the channel on Mars
what best explains the cause of strong winds on a island?
Urgent please help!!
Which of these is a chemical property of a substance?
A) texture
B) ductility
C) reactivity
D) conductivity
Answer:
reactivity
Explanation:
3. Except for the bolt, note the difference between the calculated volumes and the volume
found by the displacement method. Which method is more accurate? Why?
Answer:
Yes Because the calculated volume is more accurate because you are able to measure the smaller dimensions.
~Apex lab
Eugene describes the physical property of a material as “sweet and floral.” What physical property of the material is Eugene most likely observing?
boiling point
shape
hardness
odor
Answer:
D odor
Explanation:
Answer: odor
Explanation:
Which periodic gruop has the smallest atomic radiis
Answer:
Helium
Explanation:
First to answer both CORRECTLY gets brainleist!
Answer: I am actually studying about Stars, so I got you.
3. As the temperature of a star Increases, it's luminosity increases.
As the temperature of a star decreases, it's luminosity decreases.
4. Hot and Bright. The bigger the star, the hotter it gets is from what I learned.
Answer: As the temperture of a main sequence star increases, the luminosity increases, vice versa
Cool and bright
Explanation:
What satement is true the about atomic mass?
Answer:
Explanation:
A. It can be greater than the atomic number
1.The diagram below shows the stages of a land feature being formed over
time.
Stage 1
Stage 2
Stage 3
How has the area been
reshaped over time?
Answer:
I think....I'm not sure......the plats of earth shifting?
Explanation: