Answer: 3 significant figures
Explanation: because in scientific notation only the before and after decimal number are considered but in standard form all numbers including exponents are all significant figures
Answer:
3 significant figures
Explanation:
0's are not significant.
I hope it helps you!
[tex]GraceRosalia[/tex]
I am giving the brainliest answer too
Explain… What are the subatomic particles of an atom, and where are they located in the atom? Be specific.
Atomic Particles
Atoms consist of three basic particles: protons, electrons, and neutrons. The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge). The outermost regions of the atom are called electron shells and contain the electrons (negatively charged).
I hope its helpWhat are the subatomic particles of an atom, and where are they located in the atom? Be specific.
Answer:
120
Explanation:
just took test
How many ethnic groups are there in China?
Answer:
There are a total of 56 ethnic groups in China, with 56 ethnic groups and 56 family members.
Explanation:
There are a total of 56 ethnic groups in China, with 56 ethnic groups and 56 family members.
what is the answer to (x+3)=4
Answer:
1
Explanation:
x + 3 =4
subtract 3 from 4
You are left with one.
Plug in the answer
1+3=4
what is the number of atoms in 7.25 moles of potassium?
Answer:
4.37*10^24 atoms of K
Explanation:
1 mol=6.022*10^23 atoms (Avogadro's number)
To convert from mols to atoms multiply the mols of K by Avogadro's number.
7.25 mol K * 6.022*10^23 atoms = 4.36595*10^24 atoms
The variable that we change or test in an experiment is called the
A) Dependent variable
B) Independent variable
C) Constant
the variable that we change in an experiment is the Independent Variable. The dependent variable is the outcome and the constant is what remains the same throughout the experiment.
taylor drinks 2 liters of water during every concert how many milliliters did she drink during two concerts
Answer:
Taylor drinks 4 liters of water
Explanation:
2 litters of water per concert
2 concerts is 2x2=4
How do you define note-taking and how do you take notes to help you understand the material?
Answer:
Note-taking is simply jotting down the steps to solve specific problems, or listing the resources that can help you when learning something new. In order to take effective notes that can help you understand the material, you can use techniques like Cornell Notes which help you to organize your writing in a way that makes it referable when stuck doing independent work.
♔♔Can water stay liquid below zero degrees Celsius?✞♡♡♡
Answer:
Yes, water can stay liquid below zero degrees Celsius. There are a few ways in which this can happen. The freezing point of water drops below zero degrees Celsius as you apply pressure. When we apply pressure to a liquid, we force the molecules to get closer together.
Explanation:
Hope this helps you. Have a nice day.^_^
Please mark as brainliest. It helps a lot:)
Answer:
yes water can stay liquid below 0 ° Celsius
An image of Earth's layers is below
What is layer C?
Crust
Mantle
Inner core
Outer core
Answer:
the mantle is layer C.
Explanation:
the crust would be layer A. inner core would be layer D. outer core would be layer B.
Hi! ❤️ i need some help here thank you! ill give brainliest if able to.
Which Liquid, A or B, would float on top of the other if the two liquids were put in the same container?
Liquid A = 8 g/ml
Liquid B = 3 g/ml
Answer:
liquid B
Explanation:
because of the density of liquid A being 8, liquid B being 3 would be less dense
Why water can be unsafe in a pool?
Answer:People can drown or call or slip in
Explanation:
If an ionic compound has a 2- charge how does that affect the total number of electrons in a Lewis structure
In the situation where an ion has a charge of -2, the Lewis structure is affected because it must add two additional electrons.
The Lewis structure is a term to refer to the graphical representation that shows the pairs of electrons in dashes or points of bonds between:
The atoms of a moleculeThe lone electron pairs that may existAdditionally, the charge of an ionic compound is calculated using the difference in electrical charge between the electrons. On the other hand, an ion is formed by adding or removing electrons, so the magnitude of the resulting charge depends on the number of electrons added or removed.
According to the above, if an ionic compound has a -2 charge, the Lewis structure must add two electrons.
Learn more in: https://brainly.com/question/1488567
Which of the following atoms would be expected to be diamagnetic in the ground state?
O magnesium (Mg)
O potassiun (K)
O chlorine (CI)
O cobalt (Co)
The atoms that would be expected to be diamagnetic in the ground state is magnesium
The magnetism of an atom refers to its electronic configuration. A diamagnetic atom is an atom whose electrons are all paired.
A paired electron is an electron that occurs in pairs in its orbital shell.
At their respective ground state, the electronic configuration of the given elements are as follows:
The electronic configuration of magnesium is 1s²2s²2p⁶3s². As such its a diamagnetic atom.
The electronic configuration of Potassium is 1s²2s²2p⁶3s²3p⁶4s¹. Hence, Potassium has one unpaired electron in its outermost shell.
The electronic configuration of Chlorine is 1s²2s²2p⁶3s²3p⁵. Hence, Chlorine has one unpaired electron in its outermost shell.
The electronic configuration of Cobalt is 1s²2s²2p⁶3s²3p⁶3d⁷4s². Hence, the unpaired electrons of Cobalt in its outermost shell are three.
Therefore, the atoms that are diamagnetic in the ground state is magnesium.
Learn more about diamagnetic atoms here:
https://brainly.com/question/18865305?referrer=searchResults
How many electrons does the oxygen atom need to become stable?
Answer:
2 electrons
Explanation:
Oxygen has 6 valence electrons and to be stable it needs 8. That means it needs 2 more electrons to have a full octet.
When the water vapor rises into the atmosphere (Arrow C), it starts to cool and transform back into liquid water droplets. The result is the formation of a cloud. The process of water vapor turning into a liquid is known as:
Question 4 options:
filtration
evaporation
precipitation
condensation
Answer:
It is called condensation
Explanation:
Which of the following are characteristics of a gas? (Select all that apply.)
It has a fixed shape.
It moves slowly.
It has a fixed volume.
It can be compressed.
Answer:
it has a fixed volume it can also be compressed
Explanation:
a gases molecules don't move slow because they are not solid and are not compacted.
a gas does not have a fixed shape because there is nothing to hold its shape
Answer: I would say the last one only
Explanation:
Cuz Gases have the following characteristics:
no definite shape (takes the shape of its container)
no definite volume
particles move in random motion with little or no attraction to each other
highly compressible
A biker rode at 4m/s for 10 seconds. How far did they travel?
A.
0.4 m
B.
2.5 m
C.
14 m
D.
40 m
Answer:
D is the answer, 4 times 10 is 40
Look at diagram 2 above. What type of eclipse is shown based on the alignment of the Earth, Sun, and Moon?
Solar eclipse
Lunar eclipse
Answer:
solar eclipse is when the sun hits earth and lunar means moon or when the sun hits the moon for an eclipse
Explanation:
Calculate the osmolarity of a 1.15% (m/v) KBr solution.
Answer:
1) Convert percent (m/V) to molarity
percent (m/V)=1.15 grams/100ml=1.15 g/0.1L=11.5g/L
molarity of KBr=mol/L=g/L *(1mol/molecular weight of KBr)=(11.5g/L) * (1mol/119.0g/mol)=0.0966 mol/L=0.0966M
2) calculation of osmol from mol
In solution, KBr dissociates into two ions K+ and Br- so there are 2 osmol of KBr per mol
3) calculation of osmolarity=molarity*2=0.0966*2=0.193 Osm or Osmolar
Explanation:
brainliest would be appreciated.
HELP!! please choose all the correct answers, picture attached
an ionic compound, salt is a hard, crystalline substance in which the______and_______ions are lined up in a regular pattern
A. polar, nonpolar
B. red,blue
C. right,left
D. positive, negative
PLEASE ONLY GIVE CORRECT ANSWERS!! I WILL GIVE BRAINLIEST
Answer:
An ionic compound, salt is a hard, crystalline substance in which the positive and negative ions are lined up in a regular pattern.
Explanation:
Explain why “advancing water contact angles are more sensitive to the hydrophobic property of a surface whereas receding water contact angles are more sensitive to the hydrophilic property of a surface”.
Answer: Surface tension has a more complicated effect on capillary pressure: on the one hand, capillary pressure is directly proportional to surface tension. High surface tension liquids, on the other hand, typically have higher contact angles, which lowers capillary pressure.
Explanation: Does this help??
Write the chemical formula for the ionic compound formed by aluminum and chlorine.
Answer:
AICI3
one aluminum and three chlorine
Answer:
→
[tex]{ \rm{AlCl _{3} }}[/tex]
Explanation:
Equation:
[tex]{ \rm{2Al_{(s) } + 3Cl _{2(g)} \dashrightarrow \: 2AlCl _{3(s)}}}[/tex]
List two differences between a map and a giobe
Answer:
1. A map is two dimensional, while a globe is three dimensional
2. A globe is a scaled down representation of the entire Planet Earth. A map can represent an area of any size.
Explanation:
1. A map is usually a sheet of rectangular paper that is a flattened image of an area as seen from the top. A globe on the other hand is a sphere which is a 3D shape.
2. Earth is in the shape of a sphere, so Globes are a smaller representation of the planet. A map can be for a city, state, country, or the world.
please help with this!
Answer:
d) The object falls towards the ground
Explanation:
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Answer:
c. saturated
d. unsaturated
e. The solute isn't in the table G, so it is impossible to know
f. saturated
g. saturated
h. supersaturated
4. About 73 g
5. About 55 °C
6. About 58 °C
one two three four five six
Answer:
7
8
9
10.
better check book pages for this kinda answer.
Which describes an element?
They can combine with other elements to form atoms.
They were all discovered at the same time.
They cannot be broken down any further.
What types of safety procedures need to be followed when handling and transporting nitric acid?
Answer:
wear safety glasses, a face shield, gloves.
Explanation:
Nitric Acid Safety, Handling & First Aid When handling nitric acid in the workplace, we strongly recommend you wear chemical safety glasses, a face shield for splash protection, gloves, and an approved vapor respirator if adequate ventilation is not available. I found this online. Hope it helps!