Answer:
Sorry I don't know.
Explanation:
I'm only in middle school.
1. A unit of mass used to express atomic and molecular weights. One proton or
neutron equals one mass unit.
Atom
Atomic mass
Nucleus
Amy
Protons
Neutrons
Uranium
Electrons
Hydrogen
Answer:
Atomic mass
Explanation:
It is the unit used o express atomic and molecular weights.
Can u please help me on this question, first person to answer will be marked brainlist
Put the words in order like 1 something 2 something 3 something or whatever u think is the best way to answer this question for me
Answer:
1.이산화탄소
2.낮은
3.높은
4.쓰레기
5.빠른
6.산소
7입자
Explanation:
내가 틀렸다면 나를 수정하는 데 도움이되기를 바랍니다.
Help me pls I will mark you as brain
Answer: Is it sewage checks
According to Democritus, which substance cannot be divided?
O A. molecules
O B. matter
O C. compounds
OD. atoms
Answer:
D.) Atoms.
I hope this helps! :)
Convert 4.36 x 10 square 25 molecules of CH3OH to moles.
Answer:
72.43 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{4.36 \times {10}^{25} }{6.02 \times {10}^{23} } \\ = 72.425249[/tex]
We have the final answer as
72.43 molesHope this helps you
how many neutrons does the isotope of hydrogen called deuterium have
Answer:
The deuterium has one neutron and one proton (mass number equals 2) whereas, the far more common hydrogen isotope, protium, has no neutons in the middle.
Explanation
Could someone help me
Answer:
The space in the container so how small it is the more pressure is going to build up. YOUR WELCOME AND HAVR A GOOD DAY.
Write an equation of a line parallel to y=3x-1 passing through the point (0,3).
Answer:
wow never heard the question
Nitrogen makes up ________ of our atmosphere??? will mark Brainliest
Someone pls help me I will make you brain
Answer:
transmission clutches
the elements in the far upper right corner are classified as
Write Cadmium nitride formula using criss cross method
Explanation:
For formation of a neutral ionic compound, the charges on cation and anion must be balanced. The cation is formed by loss of electrons by metals and anions are formed by gain of electrons by non metals.
Here calcium is having an oxidation state of +2 called as Ca^{2+}Ca2+ cation and NO_3^{-}NO3− is a polyatomic anion with oxidation state of -1.. Thus they combine and their oxidation states are exchanged and written in simplest whole number ratios to give neutral Ca(NO_3)_2Ca(NO3)2
I'll mark brainly pls help
where are metal atoms located on the periodic table
Answer:
to the right of the steps
Explanation:
the metals stop at the stair step
Compare the types of elements in covalent molecular compounds vs. ionic compounds. explain
Answer:
Covalent or molecular compounds form when elements share electrons in a covalent bond to form molecules. Molecular compounds are electrically neutral. Ionic compounds are (usually) formed when a metal reacts with a nonmetal (or a polyatomic ion). Covalent compounds are formed when two nonmetals react with each other.
Explanation:
Hope this helps.
How many moles are in 6.20 x 10^24 molecules of H2O?
Answer:
10.3 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{6.20 \times {10}^{24} }{6.02 \times {10}^{23} } \\ = 10.299003[/tex]
We have the final answer as
10.3 molesHope this helps you
why do we need to calibrate equipment
Answer:
to be precise in the calculations
Explanation: for example your cell phone has a gps inside it, the gps is responsible for providing direction data like a compass, if the equipment is not calibrated, the gps will not find the correct direction.
*20 points* Pls answer questions in a positive way NO LINKS NO FILES Thank you
Answer:
A compound is a substance made of two or more different atoms which are chemically combined(Option B)A mixture is made of two or more substances that are not chemically combined (OptionB)Explanation:
Example of compound(CO)
Example of mixture(Milk)
what differentiates weathering From erosion
a. sediments
b. deposition
c. water
d. movement
Answer:
b
Explanation:
deposition is the differentiates weathering from erosion
A student in lab is determining the density of beads of an unknown metal using displacement by volume. The beads are added to an empty beaker (82.0 g) and with the metal beads it weighs 205.5 g. The beads are poured out into a graduated cylinder containing 60.9 mL of water and the water rises to 70.8 mL mark. What is the density of the metal beads in g/mL?
a. 0.34
b. 0.08
c. 12.47
d. 2.90
e. 1.74
The density of the metal beads is 12.47 g/mL (option c).
1. Determine the mass of the metal beads:
Mass of beaker + metal beads = 205.5 g
Mass of empty beaker = 82.0 g
Mass of metal beads = (Mass of beaker + metal beads) - (Mass of empty beaker)
= 205.5 g - 82.0 g
= 123.5 g
2. Determine the volume of water displaced by the metal beads:
Initial volume of water in the graduated cylinder = 60.9 mL
Final volume of water in the graduated cylinder = 70.8 mL
Volume of water displaced = Final volume - Initial volume
= 70.8 mL - 60.9 mL
= 9.9 mL
3. Calculate the density of the metal beads:
Density = Mass / Volume
Density = 123.5 g / 9.9 mL
Density = 12.47 g/mL
Therefore, the density of the metal beads is 12.47 g/mL (option c).
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I will brainless who can answer this all pleaseeeeej
Answer:
False, True, True, False, False, not sure, True, False, True, True
here u go
Pls helppppppppppppppppppppppppp
Answer:
The sun reflects off different parts of the moon as it orbits the earth
Explanation:
Answer:
the sun reflects off different parts of the moon as it orbits the Earth.
pls help with this !!!!!!
Answer:
thank you for the update on
Answer:
es la dos
Explanation:
how many moles of HNO3 would be formed from 1.0 mole of NO2
How do I know the melting point and boiling point of each chemical?
What is the most common ion charge of chromium? Where on the periodic table?
Answer:
i
Explanation:
The most common oxidation states of chromium are +6, +3, and +2. On the metal area of the periodic table.
Explanation:
Patterns are everywhere in science. Is there a pattern in how one can predict how many covalent bonds an atom will form? Explain your reasoning or provide evidence to support your answer.
HELP
Actual answer: 6
Well I also need help with this, this should help the both of us:
A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding.
Explanation:
The first two period elements can form maximum 4 covalent bonds. However, third or higher period elements can make higher number of bonds for example; SF6.
Someone help me with this pls
Answer:
D
Explanation:
Lamps
According to the kinetic molecular theory, the pressure of a gas increases as
the number of moles of gas molecules increases because —
Answer:
The volume of the gas therefore becomes large as the temperature of the gas increases, the frequency of collisions with the walls of the container must increase. This, in turn, leads to an increase in the pressure of the gas.
Explanation:
hope it helps.
How did gravity and density affect the order in which these spheres ended up on earth
Answer:
The atmosphere and Earth's interior are layered by density. The differentiation between these layers is due to processes that took place during the early stages of Earth's formation (ca. 4.5 billion years ago). At this time, melting would have caused denser substances to sink toward the center while less-dense materials would have migrated to the crust.
Gravity pulls more strongly on denser materials so denser materials are at the center of things.
Explanation:
Gravity pulls more strongly on denser materials so denser materials are at the center of things. The lowest layer of the atmosphere is denser than the upper layer. Earth's liquid metal core has convection, which generates the magnetic field.
Denser materials are in the centre of the universe because they are more powerfully pulled toward the centre by gravity.
What is gravity?The force that pulls items toward the centre of a planet or other entity is called gravity. All of the planets are kept in orbit around the sun by gravity.
Gravity applies to anything that has mass. Gravity is stronger for objects with higher mass. Along with distance, gravity weakens as well. Therefore, the gravitational force of two things becomes stronger the closer they are to one another.
The mass of the Earth is what creates gravity. The total gravitational force of all of its mass acts on the weight in your body. What gives you weight is that. Additionally, you would weigh less than you do now if you were on a planet with a lower mass than Earth.
Gravity applies to anything that has mass. Gravity is stronger for objects with higher mass. Along with distance, gravity weakens as well. Therefore, the gravitational force of two things becomes stronger the closer they are to one another.
Therefore, denser materials are closer to the centre of the universe because gravity is more drawn to them.
Read more about gravity, here
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